NtGdiDdGetInternalMoCompInfo function

Article
01/06/2021

[This function is subject to change with each operating system revision. Instead, use the Microsoft DirectDraw and Microsoft Direct3DAPIs; these APIs insulate applications from such operating system changes, and hide many other difficulties involved in interacting directly with display drivers.]

Allows the driver to report that it internally allocates display memory to perform motion compensation.

Syntax

DWORD APIENTRY NtGdiDdGetInternalMoCompInfo(
  _In_    HANDLE                    hDirectDraw,
  _Inout_ PDD_GETINTERNALMOCOMPDATA puGetInternalData
);

Parameters

hDirectDraw [in]: Handle to previously created kernel-mode DirectDraw object.
puGetInternalData [in, out]: Pointer to a DD_GETINTERNALMOCOMPDATA structure that contains the internal memory requirements.

Return value

NtGdiDdGetInternalMoCompInfo returns one of the following callback codes.

Return code	Description
DDHAL_DRIVER_HANDLED	The driver has performed the operation and returned a valid return code for that operation. If this code is DD_OK, DirectDraw or Direct3D proceeds with the function. Otherwise, DirectDraw or Direct3D returns the error code provided by the driver and aborts the function.
DDHAL_DRIVER_NOTHANDLED	The driver has no comment on the requested operation. If the driver is required to have implemented a particular callback, DirectDraw or Direct3D reports an error condition. Otherwise, DirectDraw or Direct3D handles the operation as if the driver callback had not been defined by executing the DirectDraw or Direct3D device-independent implementation.

Remarks

For more information, see the Microsoft DirectX Video Acceleration Driver Development Kit (DDK).

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Ntgdi.h