Available in LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. |
#include "l_bitmap.h"
L_LTDIS_API L_INT L_GetPlaybackIndex(hPlayback, pnIndex)
HPLAYBACK hPlayback; |
/* playback handle */ |
L_INT *pnIndex; |
/* address of the variable to be updated */ |
Gets the list index of the current bitmap during animation playback.
Parameter |
Description |
hPlayback |
Handle that references the animation playback. |
pnIndex |
Address of the variable to be updated with the index of the current bitmap. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Required DLLs and Libraries
LTDIS For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Platforms
Win32, x64.
See Also
Example
This example uses L_GetPlaybackIndex and L_SetPlaybackIndex to skip bitmaps during a playback.
L_INT GetPlaybackIndexExample(L_HWND hWnd, pBITMAPHANDLE pTargetBitmap, HBITMAPLIST hList) { L_INT nRet; HPLAYBACK hPlayback; /* Animation playback */ L_UINT uState; /* Next state in the playback */ RECT rcUpdate; /* Source clipping rectangle used in playback */ RECT rcDisplay; /* Display rectangle used in playback */ HDC hdc; /* Device context of the current window */ HPALETTE hPalette = NULL; /* Temporary copy of the current system palette */ L_INT nIndex = 0; /* Current index to the bitmap list */ L_UINT uCount = 0; /* Number of bitmaps in the list */ HPALETTE hpalPaint = NULL; /* Use the client area as the display rectangle */ GetClientRect(hWnd,&rcDisplay); /* Get the number of bitmaps in the list */ nRet = L_GetBitmapListCount(hList, &uCount); if(nRet != SUCCESS) return nRet; /* Create and run the playback */ nRet = L_CreatePlayback(&hPlayback, pTargetBitmap, hList); if(nRet != SUCCESS) return nRet; do { nRet = L_ProcessPlayback(hPlayback, &uState); if(nRet != SUCCESS) return nRet; switch(uState) { case PLAYSTATE_PRERENDER: nRet = L_GetPlaybackIndex(hPlayback, &nIndex); if(nRet != SUCCESS) return nRet; nRet = L_SetPlaybackIndex(hPlayback, ++nIndex); if(nRet != SUCCESS) return nRet; break; case PLAYSTATE_POSTRENDER: nRet = L_GetPlaybackUpdateRect(hPlayback, &rcUpdate, TRUE); if(nRet != SUCCESS) return nRet; hdc = GetDC(hWnd); if (hpalPaint) { hPalette = SelectPalette (hdc, hpalPaint, TRUE); RealizePalette(hdc); } nRet = L_PaintDC(hdc, pTargetBitmap, NULL, &rcUpdate, &rcDisplay, &rcDisplay, SRCCOPY); if(nRet != SUCCESS) return nRet; if (hpalPaint) SelectPalette (hdc, hPalette, TRUE); ReleaseDC(hWnd, hdc); break; } } while(nIndex < (L_INT) uCount); /* Clean up */ nRet = L_DestroyPlayback(hPlayback, NULL); if(nRet != SUCCESS) return nRet; return SUCCESS; }