Command
QisLib_GetVectorDataCallback

QisLib_GetVectorDataCallback

Function:
	QLibVectorDataCbFnPtr QisLib_GetVectorDataCallback();

Inputs: -

Return:
	Pointer to vector data handler function set via QisLib_SetVectorDataCallback, or NULL

Errors: -

Description:
	- Returns a pointer to the vector data handler function that was set earlier using
	QisLib_SetVectorDataCallback.