FALCON/EAGLE user manual 4.62

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Navigation: Description of driver library

Validity of functions

Some of the functions are responsible for all display modes, whereas others are only for DirectDraw display modes. In the following tables the validity of each function is listed.

Display modes
Function	Bitmap	DD back buffer surface	DD primary surface	DD overlay surface
is_AllocImageMem()	x	*2	*2	*2
is_SetImageMem()	x	*2	*2	*2
is_GetImageMem()	x	x	x	x
is_GetImageMemPitch()	x	*2	*2	*2
is_SetImageSize()	x	x	x	x*1
is_SetScaler()	x	x	x	x*1
is_SaveImage()	x	x	x	x
is_SaveImageMem()	x	x	x	x
is_LoadImage()	x	x	x	x
is_SetDecimationMode()	x	x	x	x
is_SetAllocatedImageMem()	x	*2	*2	*2
is_UpdateDisplay()			x	x
is_SetUpdateMode()		x
is_SetDDUpdateTime()		x
is_EnableDDOverlay()		x
is_DisableDDOverlay()		x
is_ShowDDOverlay()		x		x
is_HideDDOverlay()		x		x
is_ScaleDDOverlay()		x
is_GetDDOvlSurface()		x
is_GetDC()		x
is_ReleaseDC()		x
is_LockDDOverlayMem()		x
is_UnlockDDOverlayMem()		x
is_LockDDMem()		x	x	x
is_UnlockDDMem()		x	x	x
is_SetKeyColor()				x
is_SetKeyOffset()				x
is_OvlSurfaceOffWhileMove()				x
is_SetHwnd()		x	x	x
is_PrepareStealVideo()		x	x	x
is_StealVideo()		x	x	x
is_AddToSequence()	x
is_ClearSequence()	x
is_GetActSeqBuf()	x
is_LockSeqBuf()	x
is_UnlockSeqBuf()	x
is_RenderBitmap()	x

*1 do not use in the overlay surface mode with the option IS_SET_DM_ALLOW_SCALING

*2 general functions which have no effect with DirectDraw

Event handler

Fig. 60: Event handler

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FALCON/EAGLE user manual 4.62