L_GetPlaybackDelay - Raster Imaging C API Help

L_GetPlaybackDelay

#include "l_bitmap.h"

L_LTDIS_API L_INT L_GetPlaybackDelay(hPlayback, puDelay)

HPLAYBACK hPlayback;

playback handle

L_UINT *puDelay;

address of the variable to be updated

Gets the time remaining in the current wait state of an animation playback.

Parameter

Description

hPlayback

Handle that references the animation playback.

puDelay

Address of the variable to be updated with the number of milliseconds remaining.

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, Linux.

See Also

Functions:

L_CancelPlaybackWait, L_CreatePlayback, L_DestroyPlayback, L_ProcessPlayback, L_ClearPlaybackUpdateRect, L_GetPlaybackIndex, L_GetPlaybackState, L_GetPlaybackUpdateRect, L_SetPlaybackIndex, L_AppendPlayback, L_ValidatePlaybackLines

Topics:

Raster Image Functions: Creating and Maintaining Lists of Images

 

Implementing Animation

Example

This example cancels the playback wait state if the current delay is more than 10 milliseconds.

L_INT GetPlaybackDelayExample(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 */ 
   HPALETTE    hpalPaint = NULL; 
   L_UINT32    uDelay;           /* Variable to be updated with the time left */ 
 
   /* Use the client area as the display rectangle */ 
   GetClientRect(hWnd,&rcDisplay); 
   /* 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_WAITDELAY: 
         nRet = L_GetPlaybackDelay(hPlayback, &uDelay); 
         if(nRet != SUCCESS) 
            return nRet; 
         if (uDelay > 10) 
         { 
             nRet = L_CancelPlaybackWait(hPlayback); 
             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(uState != PLAYSTATE_END); 
   /* Clean up */ 
   nRet = L_DestroyPlayback(hPlayback, NULL); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
} 

Help Version 20.0.2018.7.30
Products | Support | Contact Us | Copyright Notices
© 1991-2018 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Raster Imaging C API Help