IDirectDraw4::EnumDisplayModes (Windows CE 5.0)
This method enumerates all of the display modes the hardware exposes through the DirectDraw object that are compatible with a provided surface description.
HRESULT EnumDisplayModes( DWORD dwFlags, LPDDSURFACEDESC2lpDDSurfaceDesc2,LPVOIDlpContext,LPDDENUMMODESCALLBACK2lpEnumModesCallback);
Parameters
dwFlags
The following table shows the possible flags.Flag Description DDEDM_REFRESHRATES This flag numerates modes with different refresh rates. IDirectDraw4::EnumDisplayModes guarantees that a mode is enumerated only once.
This flag specifies whether the refresh rate is taken into account when determining if a mode is unique.
It is not possible to change an adapter's refresh rate in Windows CE.
DDEDM_STANDARDVGAMODES This flag is not supported in Windows CE. lpDDSurfaceDesc2
Address of a DDSURFACEDESC2 structure that will be checked against available modes.If the value of this parameter is NULL, all modes are enumerated.
lpContext
Address of an application-defined structure that will be passed to each enumeration member.lpEnumModesCallback
Address of the EnumModesCallback2 function that the enumeration procedure will call every time a match is found.
Return Values
If the method succeeds, the return value is DD_OK.
If the method fails, the return value may be one of the following error values:
| DDERR_INVALIDOBJECT |
| DDERR_INVALIDPARAMS |
Remarks
This method enumerates the dwRefreshRate member of the DDSURFACEDESC2 structure; the IDirectDraw::EnumDisplayModes method does not contain this capability.
If you use the IDirectDraw4::SetDisplayMode method to set the refresh rate of a new mode, you must use IDirectDraw4::EnumDisplayModes to enumerate the dwRefreshRate member.
This method differs from its counterparts in former interfaces in that it accepts the address of an EnumModesCallback2 function as a parameter rather than an EnumModesCallback function.
Windows CE does not support DDEDM STANDARDVGAMODES.
Requirements
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Ddraw.h.
Link Library: Ddraw.lib.
See Also
IDirectDraw4::GetDisplayMode | IDirectDraw4::SetDisplayMode | IDirectDraw4::RestoreDisplayMode
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