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Reads named float parameter attributes from GenICam IFloat interface.


void avl::GenApi_GetFloatDescriptor
	GenApiHandle inHandle,
	const char* inParameterName,
	GenApi_FloatDescriptor& outDescriptor


Name Type Default Description
inHandle GenApiHandle Handle to object providing GenApi interface.
inParameterName const char* Textual name of the parameter that should be accessed in GenICam naming convention or device specific name. Parameter name is case sensitive.
outDescriptor GenApi_FloatDescriptor&


This function accesses the configuration of a device or software module using the GenICam GenApi interface. The actual GenApi interface is accessed through the handle of opened device or software module provided by other subsystem (like opened GigEVision device handle). A call to this function may result in time expensive (blocking) data exchange with device.

This function can be used to obtain additional information of named Float parameter, like its range. The information is returned using GenApi_FloatDescriptor structure.


This function will throw an exception in the following situations:

  • Object handle is invalid or does not provide the GenApi interface.
  • GenApi description does not provide a parameter with specified name.
  • Named parameter does not provide the IFloat interface.
  • Connection with device is lost.
  • Other unexpected GenICam or connection error occurred.