All Windows CE display drivers must implement the DDI functions listed here. However, only DrvEnableDriver must be exported from the display driver DLL. Therefore, only DrvEnableDriver must bear that name; the other functions can be called whatever you want because they are exposed to GDI through function pointers returned by DrvEnableDriver. No matter what you call them, of course, you must follow the prototypes defined in the WinDDI.H file.
| Function | Purpose |
|---|---|
| DrvAnyBlt | Bit block transfer, with stretching or transparency. |
| DrvBitBlt | General bit block transfer, with clipping and masking. |
| DrvContrastControl | Allows software adjustment of the display hardware's contrast. |
| DrvCopyBits_wceddk_DrvCopyBits | Sends GDI-created print band to printer driver. |
| DrvCreateDeviceBitmap | Creates and manages bitmaps. |
| DrvDeleteDeviceBitmap | Deletes a device bitmap. |
| DrvDisableDriver | Notifies the driver that GDI no longer needs it and is ready to unload it. |
| DrvDisablePDEV_wceddk_DrvDisablePDEV | Notifies the driver that GDI no longer needs a particular display device. |
| DrvDisableSurface_wceddk_DrvDisableSurface | Notifies the driver that GDI no longer needs a particular drawing surface. |
| DrvEnableDriver_wceddk_DrvEnableDriver | The initial entry point exposed by the driver, which returns pointers to the other DDI functions to GDI. |
| DrvEnablePDEV | Returns a PDEV, a logical representation of a physical display device, to GDI. |
| DrvEnableSurface_wceddk_DrvEnableSurface | Creates a drawing surface and associates it with a PDEV. |
| DrvEndDoc_wceddk_DrvEndDoc | Sends any control information needed to finish printing a document. |
| DrvFillPath | Fills a path with a brush. |
| DrvGetMasks | Gets the color masks for the display device's current mode. |
| DrvGetModes_wceddk_DrvGetModes | Lists the display modes supported by the display device. |
| DrvMovePointer | Moves the pointer with a guarantee of non-interference by GDI. |
| DrvPaint | Paints a specificied region with a brush. |
| DrvPowerHandler | Called to handle power-up and power-down notifications. |
| DrvQueryFont | Gets font metric information. |
| DrvRealizeBrush | Creates a brush with parameters specified by GDI. |
| DrvRealizeColor | Maps an RGB color onto the closest available color supported by the device. |
| DrvSetPalette | Sets the display device's palette. |
| DrvSetPointerShape | Set the pointer to a new shape and update the display. |
| DrvStartDoc_wceddk_DrvStartDoc | Sends any control information needed to start printing a document. |
| DrvStartPage_wceddk_DrvStartPage | Sends any control information needed to start printing a new page. |
| DrvStrokePath | Strokes a path. |
| DrvTransparentBlt | Bit block transfer, with transparency. |
| DrvUnrealizeColor | Maps a color in the display device's format onto an RGB value. |