PFND3DDDI_UPDATEOVERLAYCB callback function (d3dumddi.h)
The pfnUpdateOverlayCb function modifies a kernel-mode overlay object.
Syntax
PFND3DDDI_UPDATEOVERLAYCB Pfnd3dddiUpdateoverlaycb;
HRESULT Pfnd3dddiUpdateoverlaycb(
HANDLE hDevice,
const D3DDDICB_UPDATEOVERLAY *unnamedParam2
)
{...}
Parameters
hDevice
A handle to the display device (graphics context).
unnamedParam2
pData [in]
A pointer to a D3DDDICB_UPDATEOVERLAY structure that describes how to modify the overlay.
Return value
pfnUpdateOverlayCb returns one of the following values:
| Return code | Description |
|---|---|
| S_OK | The overlay object was successfully modified. |
| D3DDDIERR_NOTAVAILABLE | pfnUpdateOverlayCb failed because of a lack of overlay hardware or bandwidth. |
| E_INVALIDARG | Parameters were validated and determined to be incorrect. |
| E_OUTOFMEMORY | pfnUpdateOverlayCb could not allocate memory that was required for it to complete. |
This function might also return other HRESULT values.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows Vista and later versions of the Windows operating systems. |
| Target Platform | Desktop |
| Header | d3dumddi.h (include D3dumddi.h) |