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# FALCON/EAGLE user manual 4.62

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Validity of functions | Scroll Previous Top Next More

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

© 2020 IDS Imaging Development Systems GmbH