This method creates an image surface.
HRESULT CreateImageSurface( UINT Width, UINT Height, D3DMFORMAT Format, IDirect3DMobileSurface** ppSurface );
[in] Width of the image surface, in pixels.
[in] Height of the image surface, in pixels.
[in] Member of the D3DMFORMAT enumerated type, describing the format of the image surface.
[out] Address of a pointer to an IDirect3DMobileSurface interface that represents the created image surface.
Image surfaces are placeholders, they are surfaces that cannot be used in any Microsoft® Direct3D Mobile® operations except locking and IDirect3DMobileDevice::CopyRects.
Image surfaces are placed in the D3DPOOL_SYSTEMMEM memory class.