DD_DXAPI_GETVERSIONNUMBER control code
A video capture driver passes DD_DXAPI_GETVERSIONNUMBER in the dwFunctionNum parameter of the DxApi function to return the version of the kernel-mode video transport (dxapi.sys) that is supported by the video miniport driver's DxApi interface.
Pointer to a DDGETVERSIONNUMBER structure that contains the version number of the kernel-mode video transport component of DirectDraw.
This function identifier can only be called at PASSIVE_LEVEL.
|Ddkmapi.h (include Ddkmapi.h)|