mvIMPACT Acquire SDK C++
Property Class Reference

A base class for properties. More...

Inheritance diagram for Property:
Component ComponentAccess EnumPropertyF< double > EnumPropertyI< TMirrorOperationMode > EnumPropertyI< THWUpdateResult > EnumPropertyI< TDeviceInterfaceLayout > EnumPropertyI< TLineCounter > EnumPropertyI< TCameraPixelClock > EnumPropertyI< TCameraInterlacedType > EnumPropertyI< TRequestImageMemoryMode > EnumPropertyI< TPulseStartTrigger > EnumPropertyI< TDeviceImageTrigger > EnumPropertyI< TWhiteBalanceCalibrationMode > EnumPropertyI< TImageDestinationPixelFormat > EnumPropertyI< TDeviceCapability > EnumPropertyI< TUserDataReconnectBehaviour > EnumPropertyI< TBlueFOXTransferSize > EnumPropertyI< TRTCtrlModes > EnumPropertyI< TImageBufferFormatReinterpreterMode > EnumPropertyI< TLUTInterpolationMode > EnumPropertyI< TScalerMode > EnumPropertyI< TBlueFOXDigitalInputThreshold > EnumPropertyI< TCameraHDRMode > EnumPropertyI< TDeviceEventType > EnumPropertyI< TDeviceAutoNegotiatePacketSizeMode > EnumPropertyI< TDeviceLoadSettings > EnumPropertyI< TScanClock > EnumPropertyI< TDeviceAdvancedOptions > EnumPropertyI< TAutoControlMode > EnumPropertyI< TScanStandard > EnumPropertyI< TVideoStandard > EnumPropertyI< TBayerWhiteBalanceResult > EnumPropertyI< TTriggerMoment > EnumPropertyI< TImageRequestControlMode > EnumPropertyI< TDarkCurrentFilterMode > EnumPropertyI< TFlatFieldFilterCorrectionMode > EnumPropertyI< TPolarizedDataExtractionInterpolationMode > EnumPropertyI< TMirrorMode > EnumPropertyI< TMemoryManagerPoolMode > EnumPropertyI< TDeviceEventMode > EnumPropertyI< TCameraAoiMode > EnumPropertyI< TCameraShutterMode > EnumPropertyI< TClampMode > EnumPropertyI< TDevicePowerMode > EnumPropertyI< TDigIOState > EnumPropertyI< TImageProcessingFilter > EnumPropertyI< TInterlacedMode > EnumPropertyI< TCameraSerialPortBaudRate > EnumPropertyI< TAoiMode > EnumPropertyI< int > EnumPropertyI< TBlueFOXInfoSensorCapabilities > EnumPropertyI< TLUTMode > EnumPropertyI< TScalerInterpolationMode > EnumPropertyI< TDigitalIOMeasurementMode > EnumPropertyI< TVirtualDeviceTestMode > EnumPropertyI< TDeviceTriggerMode > EnumPropertyI< TCameraTestMode > EnumPropertyI< TAcquisitionField > EnumPropertyI< TFieldGateMode > EnumPropertyI< TCameraExternalSyncEdge > EnumPropertyI< TAcquisitionMode > EnumPropertyI< TDigitalOutputControlMode > EnumPropertyI< TInfoSensorType > EnumPropertyI< TLUTImplementation > EnumPropertyI< TAcquisitionStartStopBehaviour > EnumPropertyI< TDeviceClass > EnumPropertyI< TVirtualDeviceImageType > EnumPropertyI< TCameraExternalSyncOutput > EnumPropertyI< TCameraOutput > EnumPropertyI< TDigitalSignal > EnumPropertyI< TCameraFlashType > EnumPropertyI< TBlueFOXOffsetAutoBlackSpeed > EnumPropertyI< TRequestResult > EnumPropertyI< TLUTMapping > EnumPropertyI< TWhiteBalanceParameter > EnumPropertyI< TI2COperationStatus > EnumPropertyI< TCameraTriggerMode > EnumPropertyI< TCameraTapsXGeometry > EnumPropertyI< TColorTwistInputCorrectionMatrixMode > EnumPropertyI< TFlatFieldFilterMode > EnumPropertyI< TCameraTriggerSource > EnumPropertyI< TCameraTapsYGeometry > EnumPropertyI< TImageProcessingMode > EnumPropertyI< TBlueFOXFooterMode > EnumPropertyI< TRTProgOpCodes > EnumPropertyI< TColorTwistOutputCorrectionMatrixMode > EnumPropertyI< TDefectivePixelsFilterMode > EnumPropertyI< TDigitalIOMeasurementSource > EnumPropertyI< TBlueFOXSensorTiming > EnumPropertyI< TCameraFlashMode > EnumPropertyI< TAutoExposureControl > EnumPropertyI< TBoolean > EnumPropertyI< TAutoControlSpeed > EnumPropertyI< TUserDataAccessRight > EnumPropertyI< TDeviceSignalOutputStartEvent > EnumPropertyI< TBayerConversionMode > EnumPropertyI< TDeviceScanRateMode > EnumPropertyI< TCameraBinningMode > EnumPropertyI< TDeviceTriggerInterface > EnumPropertyI< TInfoSensorColorMode > EnumPropertyI< TChannelSplitMode > EnumPropertyI< TPolarizedDataExtractionMode > EnumPropertyI< TMemoryManagerMode > EnumPropertyI< TI2COperationMode > EnumPropertyI< TInterfaceEnumerationBehaviour > EnumPropertyI< TAutoOffsetCalibration > EnumPropertyI< TAutoGainControl > EnumPropertyI< TCameraScanMode > EnumPropertyI< TBayerMosaicParity > EnumPropertyI< TImageProcessingOptimization > EnumPropertyI< TRequestState > EnumPropertyI< TLUTGammaMode > EnumPropertyI< TColorProcessingMode > EnumPropertyI< TDeviceState > EnumPropertyI< TCameraExposeMode > EnumPropertyI< TCameraDataFormat > EnumPropertyI< TCameraLinkDataValidMode > EnumPropertyI< TDeviceSyncOutMode > EnumPropertyI< TDeviceAccessMode > EnumPropertyI< TImageBufferPixelFormat > EnumPropertyI64< TDeviceTriggerOverlap > EnumPropertyI64< TBufferPartDataType > EnumPropertyI64< int64_type > EnumPropertyF< ZYX > EnumPropertyI< ZYX > EnumPropertyI64< ZYX > PropertyPtr PropertyS

Public Member Functions

bool allowsValueCombinations (void) const
 Checks if this enumerated property allows the combination of enum values. More...
 
unsigned int changedCounter (void) const
 Returns the current changed counter for the component referenced by this object. More...
 
unsigned int changedCounterAttr (void) const
 Returns the current attribute changed counter for the component referenced by this object. More...
 
unsigned int dictSize (void) const
 Returns the size of the properties translation dictionary. More...
 
std::string displayName (void) const
 Returns the display name of the component referenced by this object. More...
 
std::string docString (void) const
 Returns a string containing general information about the component referenced by this object. More...
 
Component firstChild (void) const
 Moves to the first child of this component(moves down one level). More...
 
Component firstSibling (void) const
 Moves to the first sibling(the first feature in the current list of features). More...
 
TComponentFlag flags (void) const
 Returns the flags associated with this component. More...
 
std::string flagsAsString (const std::string &separator=" | ") const
 Returns the flags associated with this component as a string. More...
 
bool hasDict (void) const
 Returns whether this property defines a translation dictionary or not. More...
 
bool hasMaxValue (void) const
 Checks if a maximum value is defined for this property. More...
 
bool hasMinValue (void) const
 Checks if a minimum value is defined for this property. More...
 
bool hasStepWidth (void) const
 Checks if a step width is defined for this property. More...
 
HOBJ hObj (void) const
 Returns a unique identifier for the component referenced by this object. More...
 
bool isConstDefined (TPropertyLimits constant) const
 Checks if a certain constant is defined for this property(deprecated). More...
 
bool isDefault (void) const
 Checks if this component is currently referencing the default for this component. More...
 
bool isList (void) const
 Checks if this component is of type mvIMPACT::acquire::ComponentList. More...
 
bool isMeth (void) const
 Checks if this component is of type mvIMPACT::acquire::Method. More...
 
bool isProp (void) const
 Checks if this component is of type mvIMPACT::acquire::Property or a derived type. More...
 
bool isValid (void) const
 Checks if the internal component referenced by this object is still valid. More...
 
bool isVisible (void) const
 Checks if the component is currently shadowed due to a settings made elsewhere or not. More...
 
bool isWriteable (void) const
 Checks if the caller has write/modify access to the component. More...
 
Component lastSibling (void) const
 Moves to the last sibling(the last feature in the current list of features). More...
 
unsigned int maxValCount (void) const
 Returns maximum number of values that can be managed by this property. More...
 
std::string name (void) const
 Returns the name of the component referenced by this object. More...
 
Component nextSibling (void)
 Moves to the next sibling(the next feature in the current list of features). More...
 
 operator HOBJ () const
 Allows implicit conversion to a HOBJ. More...
 
Component operator++ (int)
 Moves to the next sibling(the next feature in the current list of features). More...
 
Componentoperator++ (void)
 Moves to the next sibling(the next feature in the current list of features). More...
 
Component parent (void) const
 Moves to the parent of this component(moves up one level). More...
 
 Property (const Property &src)
 Constructs a new mvIMPACT::acquire::Property from an existing one. More...
 
 Property (HOBJ hProp)
 Constructs a new mvIMPACT::acquire::Property object. More...
 
 Property (void)
 Constructs a new unbound mvIMPACT::acquire::Property object. More...
 
std::string readS (int index=0, const std::string &format="") const
 Reads data from this property as a string. More...
 
std::string readSArray (const std::string &format="", const std::string &delimiter="", int startIndex=0, int endIndex=INT_MAX, int mode=0) const
 Reads data from this property as a string. More...
 
const PropertyremoveValue (int index=0) const
 Removes a certain value from the property's data. More...
 
TComponentRepresentation representation (void) const
 Returns the recommended representation for this component. More...
 
std::string representationAsString (void) const
 Returns the recommended representation of the referenced component as a string. More...
 
const PropertyresizeValArray (unsigned int newSize) const
 Resizes the property's data array. More...
 
const ComponentrestoreDefault (void) const
 Restores the default for the referenced component. More...
 
Component selectedFeature (unsigned int index) const
 Retrieves a component that is selected by the current one. More...
 
unsigned int selectedFeatureCount (void) const
 Returns the number of features selected by the current one. More...
 
unsigned int selectedFeatures (std::vector< Component > &v) const
 Retrieves the list of components that are selected by the current one. More...
 
Component selectingFeature (unsigned int index) const
 Retrieves a component that is selecting the current one. More...
 
unsigned int selectingFeatureCount (void) const
 Returns the number of features selecting the current one. More...
 
unsigned int selectingFeatures (std::vector< Component > &v) const
 Retrieves the list of components that are selecting the current one. More...
 
std::string stringFormatString (void) const
 Returns the internal format string this property uses to convert data to strings. More...
 
TComponentType type (void) const
 Returns the type of the referenced component. More...
 
std::string typeAsString (void) const
 Returns the type of the referenced component as a string. More...
 
unsigned int valCount (void) const
 Returns the current number of values managed by this property. More...
 
TComponentVisibility visibility (void) const
 Returns the recommended visibility for this component. More...
 
std::string visibilityAsString (void) const
 Returns the recommended visibility of the referenced component as a string. More...
 
const PropertywriteS (const std::string &value, int index=0) const
 Assigns a new value to this property. More...
 
const PropertywriteS (const std::vector< std::string > &sequence, int index=0) const
 Assigns new values to this property. More...
 

Static Public Member Functions

static std::string representationAsString (TComponentRepresentation representation)
 Returns the recommended representation converted to a string. More...
 
static TComponentType type (HOBJ hObj)
 Returns the type of the component referenced by hObj. More...
 
static std::string visibilityAsString (TComponentVisibility visibility)
 Returns the recommended visibility converted to a string. More...
 

Protected Types

enum  { BUFFER_INCREMENT_FACTOR = 6 }
 An internal constant that defines by which factor dynamic buffers will grow when the current size is not sufficient. More...
 

Protected Member Functions

std::string compGetStringParam (TOBJ_StringQuery query, int param1=0, int param2=0) const
 A helper function to query certain component related string parameters. More...
 
int valuesToRead (int start, int end) const
 

Static Protected Member Functions

static char * stringAllocator (const char *pBuf, size_t reqBufSize)
 An internal helper function for fast string allocation. More...
 

Protected Attributes

HOBJ m_hObj
 A unique identifier for the internal driver object referenced by this instance of mvIMPACT::acquire::ComponentAccess. More...
 

Detailed Description

A base class for properties.

A property can be used to represent certain values like e.g. the input channel of a device. Depending on the way the property has been created it is either possible to read and write data to it or ( when the mvIMPACT::acquire::cfWriteAccess flag is NOT set ) just to read the data. In rare cases it might also be possible that the user is is not allowed to read the data of a property. To find out what you are allowed to do with a property or any other component the function mvIMPACT::acquire::Component::flags() can be called.

A property can contain either a single value or an array of values of the same type (e.g. 4 integer values could be used to represent a property call 'Rectangle'. It can even (if the mvIMPACT::acquire::cfFixedSize flag is not set) contain a different number of values all the time its data is queried. E.g. for a property 'searchresults' each time some function is called which writes its results to this property the property could contain a different number of integer values afterwards.

Every properties value can be read and written either as string or by it actual value type. So you can either assign the value of an integer property by using the standard 'write' function that accepts the value to be the type of the property or the function mvIMPACT::acquire::Property::writeS can be used to set the property via a string containing the new value.

prop.writeS("5"); // string assignment
prop.write(5); // integer assignment
HOBJ hObj(void) const
Returns a unique identifier for the component referenced by this object.
Definition: mvIMPACT_acquire.h:1081
EnumPropertyI< int > PropertyI
A type for integer properties.
Definition: mvIMPACT_acquire.h:4516

In addition to that float and int Properties might define a translation dictionary. This cannot be done by the user, but the user can work with the dictionary afterwards. A translation dictionary is a table which maps strings to certain values (e.g. integers).

The translation dictionary serves two purposes: Once it has been defined this property can only be assigned values ( which can either be passed as a string or as the actual value ) which are contained in the translation table. Thus this makes it very easy to restrict a certain property to a fixed number of values, which can be assigned to it. Properties that have a translation dictionary will typically be defined by declaring a template instance with the type of the enumeration.

The second benefit of a translation dictionary is that certain values can be assigned a meaningful description via its translation. When a translation table has been defined either the string translation can be used to assign its value or its actual data type. A float property e.g. might define a translation table like this: 'Auto -> 0', 'auto -> 1', 'OnLowLevel -> 2'. Now to set this property to use the 'on low level' trigger mode this can be done by calling one of the 'write' functions.

PropertyICameraTriggerMode prop = getPropertyFromSomewhere();
prop.writeS("OnLowLevel"); // set value via the translation string
prop.write(ctmOnLowLevel); // set value via enum type
EnumPropertyI< TCameraTriggerMode > PropertyICameraTriggerMode
Defines a property for values defined by mvIMPACT::acquire::TCameraTriggerMode.
Definition: mvIMPACT_acquire.h:14703
@ ctmOnLowLevel
Start the exposure of a frame when the trigger input is below the trigger threshold.
Definition: mvDriverBaseEnums.h:1363

This can also be extremely useful to populate combo boxes for GUI applications.

Float and int properties can also define certain constants like a max. value or a min. value. If a property does define such values it can't be assigned values which do not lie within the defined range. To find out if constants are defined The user can call the functions mvIMPACT::acquire::Property::hasMaxValue, mvIMPACT::acquire::Property::hasMinValue and mvIMPACT::acquire::Property::hasStepWidth. To query to actual value of the max, min or step width the functions getMaxValue, getMinValue and getStepWidth of the classes mvIMPACT::acquire::EnumPropertyF, mvIMPACT::acquire::EnumPropertyI and mvIMPACT::acquire::EnumPropertyI64 can be called.

When reading the value of a property as a string the user can define a format string telling the property module how to format the returned string. This works pretty much like when working e.g. with the printf function.

Examples
exampleHelper.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum
protectedinherited

An internal constant that defines by which factor dynamic buffers will grow when the current size is not sufficient.

Enumerator
BUFFER_INCREMENT_FACTOR 

Constructor & Destructor Documentation

◆ Property() [1/3]

Property ( void  )
inlineexplicit

Constructs a new unbound mvIMPACT::acquire::Property object.

Properties constructed this way can't be used for anything unless they are bound to a internal driver property with a mvIMPACT::acquire::ComponentLocator object.

◆ Property() [2/3]

Property ( HOBJ  hProp)
inlineexplicit

Constructs a new mvIMPACT::acquire::Property object.

Properties successfully constructed this way can be worked with directly. If hObj does not reference an internal driver property a mvIMPACT::acquire::ENotAProperty exception will be thrown.

Parameters
[in]hPropA valid handle to a property

◆ Property() [3/3]

Property ( const Property src)
inline

Constructs a new mvIMPACT::acquire::Property from an existing one.

Parameters
[in]srcA constant reference to the mvIMPACT::acquire::Property object, this object shall be created from

Member Function Documentation

◆ allowsValueCombinations()

bool allowsValueCombinations ( void  ) const
inline

Checks if this enumerated property allows the combination of enum values.

If this function returns true, the enum constants can be 'ored' together. This works for the enum constants as well as for the string representations returned in the properties translation dictionary.

if a property e.g. defines a dictionary (('1', "one"), ('2', "two")) the following write operations will be valid:

prop = getPropFromSomewhere()
prop.write( 1 | 2 )
prop.write( "one | two" )

If this function returns true code like this will be valid:

enum TEnum
{
eA,
eB
};
typedef EnumPropertyI<TEnum> PropertyIEnum;
PropertyIEnum p = getPropFromSomewhere();
p.write( TEnum(eA | eB) );
Returns
  • true if this property allows the combination of enum values.
  • false otherwise.

◆ changedCounter()

unsigned int changedCounter ( void  ) const
inlineinherited

Returns the current changed counter for the component referenced by this object.

This changed counter is incremented internally each time the component is modified. To check if this component has been modified since the last time, this check has been performed, keep track of the last return value of this function and compare it with the new value. This can be helpful e.g. to keep a GUI up to date. The value returned by this function will always be larger than or equal to the value returned by mvIMPACT::acquire::ComponentAccess::changedCounterAttr (except in case of a wrap around) when called at the same time for the same object as it's always incremented when the component has been modified in any way while the latter one will only be incremented if the attributes (e.g. the flags) but NOT if e.g. the value(s) of a property has been modified.

//-----------------------------------------------------------------------------
struct ComponentRef
//-----------------------------------------------------------------------------
{
unsigned int lastChangedCount_;
ComponentRef( mvIMPACT::acquire::Component c ) : c_( c ), lastChangedCount_( 0 ) {}
};
//-----------------------------------------------------------------------------
void fn( ComponentRef& cr )
//-----------------------------------------------------------------------------
{
if( cr.c_.isValid() )
{
const unsigned int currentChangedCount = cr.c_.changedCounter();
if( currentChangedCount != cr.lastChangedCount_ )
{
// something has happened since the last check!
doWhatNeedsToBeDone();
// and remember the current changed counter
cr.lastChangedCount_ = currentChangedCount;
}
}
}
A base class to implement access to internal driver components.
Definition: mvIMPACT_acquire.h:1321
Returns
The current changed counter of this object.

◆ changedCounterAttr()

unsigned int changedCounterAttr ( void  ) const
inlineinherited

Returns the current attribute changed counter for the component referenced by this object.

This changed counter is incremented internally each time the components attributes have been modified. To check if this components attributes have been modified since the last time, this check has been performed, keep track of the last return value of this function and compare it with the new value. This can be helpful e.g. to keep a GUI up to date.

Note
Attributes changes are e.g. a modification to a property's translation dictionary, but NOT a property's value. Because of this the value returned by this function will always be less or equal than the value returned by the function mvIMPACT::acquire::ComponentAccess::changedCounter (except in case of a wrap around) when called at the same time for the same object.
See also
mvIMPACT::acquire::ComponentAccess::changedCounter
Returns
The current attributes changed counter of this object.

◆ compGetStringParam()

std::string compGetStringParam ( TOBJ_StringQuery  query,
int  param1 = 0,
int  param2 = 0 
) const
inlineprotectedinherited

A helper function to query certain component related string parameters.

This function might throw an exception, if an invalid parameter has been queried.

Returns
A string containing the data to be queried.
Parameters
queryThe type of the parameter to read
[in]param1An additional parameter
[in]param2An additional parameter

◆ dictSize()

unsigned int dictSize ( void  ) const
inline

Returns the size of the properties translation dictionary.

If the property does define a translation dictionary this function returns the number of elements contained in this dictionary.

Returns
  • The size of the properties translation dictionary.
  • 0 If this property does not define a translation dictionary.

◆ displayName()

std::string displayName ( void  ) const
inlineinherited

Returns the display name of the component referenced by this object.

Since
1.11.20
Returns
The display name of the component referenced by this object. This might be an empty string if no display name has been specified.
Examples
exampleHelper.h.

◆ docString()

std::string docString ( void  ) const
inlineinherited

Returns a string containing general information about the component referenced by this object.

Returns
A string containing general information about the component referenced by this object.
Examples
exampleHelper.h.

◆ firstChild()

Component firstChild ( void  ) const
inlineinherited

Moves to the first child of this component(moves down one level).

Calling this function will only succeed, if the current mvIMPACT::acquire::Component references a list.

Returns
A new mvIMPACT::acquire::Component object

◆ firstSibling()

Component firstSibling ( void  ) const
inlineinherited

Moves to the first sibling(the first feature in the current list of features).

Returns
A new mvIMPACT::acquire::Component object

◆ flags()

TComponentFlag flags ( void  ) const
inlineinherited

Returns the flags associated with this component.

Returns
The flags associated with this component.

◆ flagsAsString()

std::string flagsAsString ( const std::string &  separator = " | ") const
inlineinherited

Returns the flags associated with this component as a string.

Returns
The flags associated with this component as a string.
Parameters
[in]separatorA user definable string to separate the individual flags. The default value is ' | ' resulting in the string to look e.g. like this: 'cfWriteAccess | cfReadAccess'
Examples
exampleHelper.h.

◆ hasDict()

bool hasDict ( void  ) const
inline

Returns whether this property defines a translation dictionary or not.

Returns
  • true if this property defines a translation table
  • false otherwise
Examples
exampleHelper.h.

◆ hasMaxValue()

bool hasMaxValue ( void  ) const
inline

Checks if a maximum value is defined for this property.

Since
1.12.63
Returns
  • true if this property defines a maximum value
  • false otherwise
Examples
exampleHelper.h.

◆ hasMinValue()

bool hasMinValue ( void  ) const
inline

Checks if a minimum value is defined for this property.

Since
1.12.63
Returns
  • true if this property defines a minimum value
  • false otherwise
Examples
exampleHelper.h.

◆ hasStepWidth()

bool hasStepWidth ( void  ) const
inline

Checks if a step width is defined for this property.

Since
1.12.63
Returns
  • true if this property defines a step width
  • false otherwise
Examples
exampleHelper.h.

◆ hObj()

HOBJ hObj ( void  ) const
inlineinherited

Returns a unique identifier for the component referenced by this object.

Returns
A unique identifier for the component referenced by this object.

◆ isConstDefined()

bool isConstDefined ( TPropertyLimits  constant) const

Checks if a certain constant is defined for this property(deprecated).

Deprecated:
This function has been declared deprecated and will be removed in future versions of this interface. Use mvIMPACT::acquire::Property::hasMaxValue(), mvIMPACT::acquire::Property::hasMinValue() and mvIMPACT::acquire::Property::hasStepWidth() instead and see the corresponding 'Porting existing code' section in the documentation.

Valid values for constant are defined by the enum mvIMPACT::acquire::TPropertyLimits.

Returns
  • true if this property defines this constant
  • false otherwise [in] The constant whose existence is in question

◆ isDefault()

bool isDefault ( void  ) const
inlineinherited

Checks if this component is currently referencing the default for this component.

This function will return true only for derived components that have not been modified.

Returns
  • true if the component is currently set to its default value
  • false otherwise.

◆ isList()

bool isList ( void  ) const
inlineinherited

Checks if this component is of type mvIMPACT::acquire::ComponentList.

Returns
  • true if the component references a list
  • false otherwise

◆ isMeth()

bool isMeth ( void  ) const
inlineinherited

Checks if this component is of type mvIMPACT::acquire::Method.

Returns
  • true if the component references a method
  • false otherwise

◆ isProp()

bool isProp ( void  ) const
inlineinherited

Checks if this component is of type mvIMPACT::acquire::Property or a derived type.

Returns
  • true if the component references a property
  • false otherwise

◆ isValid()

bool isValid ( void  ) const
inlineinherited

Checks if the internal component referenced by this object is still valid.

This function can be used to verify whether a referenced component is still valid or not. When e.g. referencing a driver property after mvIMPACT::acquire::Device::close has been called this function would return false. Calling any other function that tries to access the referenced component in that case would raise an exception.

Returns
  • true if this object currently references a valid component
  • false otherwise.
Examples
exampleHelper.h.

◆ isVisible()

bool isVisible ( void  ) const
inlineinherited

Checks if the component is currently shadowed due to a settings made elsewhere or not.

Settings applied to certain components might affect the behaviour of others. For example an activated automatic gain control might shadow the value written to the gain property by the user as the gain is calculated internally. In order to check if modifying the actual component will affect the behaviour of the system this function may be used. When it returns true, the mvIMPACT::acquire::Component will have an impact on the system, if false is returned, the feature might be modified, but this will currently NOT influence the acquisition process or the overall behaviour of the device or driver.

This is what is called visibility. The user still might modify or read the current mvIMPACT::acquire::Component when it's not visible however the actual data will be used only if the Component is visible (mvIMPACT::acquire::cfInvisible must NOT be set).

The visibility of a mvIMPACT::acquire::Component object will change only if other mvIMPACT::acquire::Component objects are modified and NEVER when a program runs but does not change any mvIMPACT::acquire::Component.

◆ isWriteable()

bool isWriteable ( void  ) const
inlineinherited

Checks if the caller has write/modify access to the component.

Returns
  • true if the caller is allowed to call write/modify operation for this component.
  • false otherwise.
Examples
exampleHelper.h.

◆ lastSibling()

Component lastSibling ( void  ) const
inlineinherited

Moves to the last sibling(the last feature in the current list of features).

Since
1.10.64
Returns
A new mvIMPACT::acquire::Component object

◆ maxValCount()

unsigned int maxValCount ( void  ) const
inline

Returns maximum number of values that can be managed by this property.

For the majority of properties this function will return '1', but as properties might manage more than a single value, this value might be interesting from time to time.

Returns
the maximum number of values that can be managed by this property.

◆ name()

std::string name ( void  ) const
inlineinherited

Returns the name of the component referenced by this object.

Returns
The name of the component referenced by this object.
Examples
exampleHelper.h.

◆ nextSibling()

Component nextSibling ( void  )
inlineinherited

Moves to the next sibling(the next feature in the current list of features).

Returns
A new mvIMPACT::acquire::Component object

◆ operator HOBJ()

operator HOBJ ( ) const
inlineinherited

Allows implicit conversion to a HOBJ.

◆ operator++() [1/2]

Component operator++ ( int  )
inlineinherited

Moves to the next sibling(the next feature in the current list of features).

Returns
A new mvIMPACT::acquire::Component object

◆ operator++() [2/2]

Component& operator++ ( void  )
inlineinherited

Moves to the next sibling(the next feature in the current list of features).

Returns
A self reference

◆ parent()

Component parent ( void  ) const
inlineinherited

Moves to the parent of this component(moves up one level).

Returns
A new mvIMPACT::acquire::Component object

◆ readS()

std::string readS ( int  index = 0,
const std::string &  format = "" 
) const
inline

Reads data from this property as a string.

Note
If the caller does not have the needed rights this function might throw an exception of the type mvIMPACT::acquire::ImpactAcquireException.
Returns
A string containing the data questioned.
Parameters
[in]indexThe index of the desired value(only necessary for properties containing more than one value)
[in]formatThe format string telling the function how to format the result. If left empty the property uses its standard way of converting its data into a string
Examples
ContinuousCapture.win32.cpp, ContinuousCaptureMultiPart.legacy.cpp, GenICamCallbackOnEvent.cpp, GenICamCommonSettingsUsage.legacy.cpp, GenICamSequencerUsageWithPaths.cpp, GenICamSequencerUsageWithPaths.legacy.cpp, and exampleHelper.h.

◆ readSArray()

std::string readSArray ( const std::string &  format = "",
const std::string &  delimiter = "",
int  startIndex = 0,
int  endIndex = INT_MAX,
int  mode = 0 
) const
inline

Reads data from this property as a string.

This function can be used to query a set of values if this property stores more than a single value which might be useful for GUI applications.

PropertyI p = getPropFromSomewhere();
p.write( 1 );
p.write( 2, 1 );
p.write( 666, 2 );
std::string s = p.readSArray( "%d", "&&:", 1 );
// now s should contain '2&&:666'
s = p.readSArray( "%4d", " ", 0, 1 );
// now s should contain ' 1, 2'
Note
If the caller does not have the needed rights this function might throw an exception of the type mvIMPACT::acquire::ImpactAcquireException.
Returns
A string containing the data questioned.
Parameters
[in]formatThe format string telling the function how to format the result. If left empty the property uses its standard way of converting its data into a string
[in]delimiterThis string is used to separate the individual values from one another. If left empty, a single blank will separate the data.
[in]startIndexThe index of the first of the desired values
[in]endIndexThe index of the last of the desired values. If INT_MAX is passed, every from startIndex to the last value stored by the property will be returned.
[in]modeSpecifies the mode this function operates in. Currently only the LSB affects the behaviour of this function. When the LSB is set, the translation dictionary (if defined) will be ignored for this call.

◆ removeValue()

const Property& removeValue ( int  index = 0) const
inline

Removes a certain value from the property's data.

Returns
A const reference to the calling property.
Parameters
[in]indexThe index of the value to be removed

◆ representation()

TComponentRepresentation representation ( void  ) const
inlineinherited

Returns the recommended representation for this component.

The representation can be used e.g. to develop a GUI that creates convenient controls for certain features.

Valid values for this property are defined by the enumeration mvIMPACT::acquire::TComponentRepresentation.

Since
2.14.0
Returns
The recommended representation for this component.

◆ representationAsString() [1/2]

static std::string representationAsString ( TComponentRepresentation  representation)
inlinestaticinherited

Returns the recommended representation converted to a string.

Since
2.14.0
Returns
The recommended representation converted to a string.
Parameters
[in]representationThe representation to query the string representation for

◆ representationAsString() [2/2]

std::string representationAsString ( void  ) const
inlineinherited

Returns the recommended representation of the referenced component as a string.

Since
2.14.0
Returns
The recommended representation of the referenced component as a string.

◆ resizeValArray()

const Property& resizeValArray ( unsigned int  newSize) const
inline

Resizes the property's data array.

This function resizes the internal data array of this property. The size of this array represents the number of values, which can be stored within the property. This function will only succeed, if the mvIMPACT::acquire::cfFixedSize is NOT set for this property and the user has "write rights" for this property. Otherwise an exception will be thrown. Whenever the user successfully writes an array of values to a property and this array contains more elements than the current internal data array can accommodate at the desired offset the internal data array will be increased automatically.

Note
If the caller does not have the needed rights this function might throw an exception of the type mvIMPACT::acquire::ImpactAcquireException.
In order to be allowed to modify the number of values a property can store, the mvIMPACT::acquire::cfFixedSize flag must NOT be set.
See also
mvIMPACT::acquire::Component::isWriteable
Returns
A const reference to the calling property.
Parameters
[in]newSizeThe new number of values this property shall be allowed to store

◆ restoreDefault()

const Component& restoreDefault ( void  ) const
inlineinherited

Restores the default for the referenced component.

Calling this function will restore the default value for the component referenced by this object.

If this function is called for an object of type mvIMPACT::acquire::ComponentList every component in that list is restored to the default value.

Note
The caller must have the right to modify the component. Otherwise an exception will be thrown.
Returns
A const reference to the component.

◆ selectedFeature()

Component selectedFeature ( unsigned int  index) const
inlineinherited

Retrieves a component that is selected by the current one.

This function retrieves a component that is selected by the current one. This information is mainly useful for GUI applications that want to arrange features in a way that dependencies between features can easily been spotted.

When a component 'selects' other components, this indicates that selected components may change whenever the selecting component changes. An example for a selector might be a property defining the index within a LUT while the value of a particular LUT entry could be a selected feature. Assuming 2 properties LUTIndex and LUTValue then changing LUTIndex will invalidate and possibly change LUTValue.

C++ offers the more efficient function mvIMPACT::acquire::Component::selectedFeatures to obtain this information.

To find out how many mvIMPACT::acquire::Component objects are selected by the current one call mvIMPACT::acquire::Component::selectedFeatureCount. This value minus 1 will also be the max. value for index.

See also
mvIMPACT::acquire::Component::selectedFeatureCount,
mvIMPACT::acquire::Component::selectedFeatures
Since
1.11.20
Returns
A mvIMPACT::acquire::Component that is selected by the current one.
Parameters
[in]indexThe index for the component to query.

◆ selectedFeatureCount()

unsigned int selectedFeatureCount ( void  ) const
inlineinherited

Returns the number of features selected by the current one.

See also
mvIMPACT::acquire::Component::selectedFeatures,
mvIMPACT::acquire::Component::selectedFeature
Since
1.11.20
Returns
The number of features selected by the current one.
Examples
exampleHelper.h.

◆ selectedFeatures()

unsigned int selectedFeatures ( std::vector< Component > &  v) const
inlineinherited

Retrieves the list of components that are selected by the current one.

This function retrieves the list of components that are selected by the current one. This information is mainly useful for GUI applications that want to arrange features in a way that dependencies between features can easily been spotted.

When a component 'selects' other components, this indicates that selected components may change whenever the selecting component changes. An example for a selector might be a property defining the index within a LUT while the value of a particular LUT entry could be a selected feature. Assuming 2 properties LUTIndex and LUTValue then changing LUTIndex will invalidate and possibly change LUTValue.

See also
mvIMPACT::acquire::Component::selectedFeatureCount,
mvIMPACT::acquire::Component::selectedFeature
Since
1.11.20
Returns
The number of features selected by the current one.
Parameters
[out]vAn array that will retrieve the list of components that are selected by the current one.
Examples
exampleHelper.h.

◆ selectingFeature()

Component selectingFeature ( unsigned int  index) const
inlineinherited

Retrieves a component that is selecting the current one.

This function retrieves a component that is selecting the current one. This information is mainly useful for GUI applications that want to arrange features in a way that dependencies between features can easily been spotted.

When a component 'selects' other components, this indicates that selected components may change whenever the selecting component changes. An example for a selector might be a property defining the index within a LUT while the value of a particular LUT entry could be a selected feature. Assuming 2 properties LUTIndex and LUTValue then changing LUTIndex will invalidate and possibly change LUTValue.

C++ offers the more efficient function mvIMPACT::acquire::Component::selectingFeatures to obtain this information.

To find out how many mvIMPACT::acquire::Component objects are selecting the current one call mvIMPACT::acquire::Component::selectingFeatureCount. This value minus 1 will also be the max. value for index.

See also
mvIMPACT::acquire::Component::selectingFeatureCount,
mvIMPACT::acquire::Component::selectingFeatures
Since
1.11.20
Returns
A mvIMPACT::acquire::Component that is selecting the current one.
Parameters
[in]indexThe index for the component to query.

◆ selectingFeatureCount()

unsigned int selectingFeatureCount ( void  ) const
inlineinherited

Returns the number of features selecting the current one.

See also
mvIMPACT::acquire::Component::selectingFeatures,
mvIMPACT::acquire::Component::selectingFeature
Since
1.11.20
Returns
The number of features selecting the current one.
Examples
exampleHelper.h.

◆ selectingFeatures()

unsigned int selectingFeatures ( std::vector< Component > &  v) const
inlineinherited

Retrieves the list of components that are selecting the current one.

This function retrieves the list of components that are selecting the current one. This information is mainly useful for GUI applications that want to arrange features in a way that dependencies between features can easily been spotted.

When a component 'selects' other components, this indicates that selected components may change whenever the selecting component changes. An example for a selector might be a property defining the index within a LUT while the value of a particular LUT entry could be a selected feature. Assuming 2 properties LUTIndex and LUTValue then changing LUTIndex will invalidate and possibly change LUTValue.

See also
mvIMPACT::acquire::Component::selectingFeatureCount,
mvIMPACT::acquire::Component::selectingFeature
Since
1.11.20
Returns
The number of features selecting the current one.
Parameters
[out]vAn array that will retrieve the list of components that are selecting the current one.
Examples
exampleHelper.h.

◆ stringAllocator()

static char* stringAllocator ( const char *  pBuf,
size_t  reqBufSize 
)
inlinestaticprotectedinherited

An internal helper function for fast string allocation.

◆ stringFormatString()

std::string stringFormatString ( void  ) const
inline

Returns the internal format string this property uses to convert data to strings.

Returns
A string containing the format string internally used by the property whenever the user reads a value as a string without specifying a format string and the property is not a string type one.

◆ type() [1/2]

static TComponentType type ( HOBJ  hObj)
inlinestaticinherited

Returns the type of the component referenced by hObj.

Returns
The type of the component referenced by hObj.
Parameters
[in]hObjThe component the type shall be retrieved for

◆ type() [2/2]

TComponentType type ( void  ) const
inlineinherited

Returns the type of the referenced component.

Returns
The type of the referenced component.
Examples
exampleHelper.h.

◆ typeAsString()

std::string typeAsString ( void  ) const
inlineinherited

Returns the type of the referenced component as a string.

Returns
The type of the referenced component as a string.
Examples
exampleHelper.h.

◆ valCount()

unsigned int valCount ( void  ) const
inline

Returns the current number of values managed by this property.

For the majority of properties this function will return '1', but as properties might manage more than a single value, this value might be interesting from time to time.

Returns
the current number of values managed by this property.
Examples
exampleHelper.h.

◆ valuesToRead()

int valuesToRead ( int  start,
int  end 
) const
inlineprotected

◆ visibility()

TComponentVisibility visibility ( void  ) const
inlineinherited

Returns the recommended visibility for this component.

The visibility can be used e.g. to develop a GUI that displays a crucial subset of features only.

Valid values for this property are defined by the enumeration mvIMPACT::acquire::TComponentVisibility.

Returns
The recommended visibility for this component.

◆ visibilityAsString() [1/2]

static std::string visibilityAsString ( TComponentVisibility  visibility)
inlinestaticinherited

Returns the recommended visibility converted to a string.

Returns
The recommended visibility converted to a string.
Parameters
[in]visibilityThe visibility to query the string representation for

◆ visibilityAsString() [2/2]

std::string visibilityAsString ( void  ) const
inlineinherited

Returns the recommended visibility of the referenced component as a string.

Returns
The recommended visibility of the referenced component as a string.

◆ writeS() [1/2]

const Property& writeS ( const std::string &  value,
int  index = 0 
) const
inline

Assigns a new value to this property.

The user caller have "write rights" for this property in order to be able to modify its value. Also if index is greater than the current internal data array size of this property the user must be allowed to change to size of the properties internal data array (the mvIMPACT::acquire::cfFixedSize flag must NOT be set).

Note
If the caller does not have the needed rights this function might throw an exception of the type mvIMPACT::acquire::ImpactAcquireException.
See also
mvIMPACT::acquire::Component::isWriteable,
mvIMPACT::acquire::Component::flags,
mvIMPACT::acquire::Property::writeS
Returns
A const reference to the calling property.
Parameters
[in]valueThe new value for this property at the given index
[in]indexThe index of the value to modify
Examples
exampleHelper.h.

◆ writeS() [2/2]

const Property& writeS ( const std::vector< std::string > &  sequence,
int  index = 0 
) const
inline

Assigns new values to this property.

The user must have "write rights" for this property in order to be able to modify its values. Also if index is greater than the current internal data array size of this property the user must be allowed to change to size of the properties internal data array (the mvIMPACT::acquire::cfFixedSize flag must NOT be set). This function behaves exactly like mvIMPACT::acquire::Property::writeS except that is can be used to assign more than one value at the same time. The parameter index here serves as an offset. If for example a property holds 3 values 'one', 'two' and 'three' before this call and the function is then called with an array containing the string 'orange' and 'blue' and index = 2 then after a successful call to this function the property will hold the data 'one', 'two', 'orange' and 'blue'.

Note
If the caller does not have the needed rights this function might throw an exception of the type mvIMPACT::acquire::ImpactAcquireException.
See also
mvIMPACT::acquire::Component::isWriteable,
mvIMPACT::acquire::Component::flags,
mvIMPACT::acquire::Property::writeS
Returns
A const reference to the calling property.
Parameters
[in]sequenceA constant reference to an array containing the strings to be assigned to the property
[in]indexThe offset from where to start to assign the values

Member Data Documentation

◆ m_hObj

HOBJ m_hObj
protectedinherited

A unique identifier for the internal driver object referenced by this instance of mvIMPACT::acquire::ComponentAccess.


The documentation for this class was generated from the following file: