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The DDGPE class serves as the base from which a DirectDraw display driver can be derived.
The following table shows the methods defined in the DDGPE class.
| Method | Description |
|---|---|
| DDGPE::AllocSurface | Allocates memory for a new surface. |
| DDGPE::AllocVideoSurface | Creates a DDGPESurf object in memory. |
| DDGPE::BltExpanded | Sets up and performs a GPE blit. |
| DDGPE::BltPrepare | Provides a DDGPE version of the GPEBltPrepare function. |
| DDGPE::DetectMode | Determines the display mode that corresponds to supplied parameters. |
| DDGPE::DetectPixelFormat | Translates DDPIXELFORMAT into EGPEFormat or EDDGPEPixelFormat. |
| DDGPE::GetDriverData | Retrieves a pointer to driver data. |
| DDGPE::GetDriverGUID | Obtains the driver-specific globally unique identifier (GUID) of the specified object. |
| DDGPE::GetModeInfoEx | Returns extended mode information. |
| DDGPE::GetPhysicalModeId | Retrieves the mode of the display, if different from the current graphics device interface (GDI) mode. |
| DDGPE::InDisplay | Determines if the specified scanline is in the display. |
| m_pModeEx | Contains GDI's current mode information. Initialized by the driver. |
| m_dwPhysicalModeID | Contains the mode identifier for the current display mode, regardless of GDI settings. |
| DDGPE::PerformBlt | Performs a blit. |
| DDGPE::SetDriverData | Stores driver-specific data in the DDGPE object. |
| DDGPE::SetDriverGUID | Applies the driver's GUID to the specified object. |
| DDGPE::SetMode | Changes the current display mode. |
| DDGPE::SetVisibleSurface | Causes the specified GPE surface to flip to the display. |
| DDGPE::WrapSurface | Creates an object based on DDGPESurf on an existing block of memory. |
For a description of the DDGPE class, see DDGPE Class Definition.
See Also
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