L_CopyBitmapListItems

Summary

Creates a new bitmap list by copying the specified bitmaps from an existing list. Bitmap handles and image data are copied.

Syntax

#include "l_bitmap.h"

L_LTKRN_API L_INT L_CopyBitmapListItems(phList, hList, uIndex, uCount)

Parameters

pHBITMAPLIST phList

Address of the variable to be updated with the new list of bitmaps.

HBITMAPLIST hList

Handle to the list of bitmaps to copy from.

L_UINT uIndex

Index of the first bitmap to copy.

L_UINT uCount

Number of bitmaps to copy. You can specify (L_UINT) -1 to copy to the end of the existing list.

Returns

Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.

Required DLLs and Libraries

Platforms

Win32, x64, Linux.

See Also

Functions

Topics

Example

This example copies all but the first two bitmaps in a list of bitmaps;
then calls another function to save the copied list.

L_INT SaveBitmapList(pBITMAPHANDLE   pBitmap,/* Bitmap handle for the playback target */ 
                     HBITMAPLIST    hList) 
{ 
   L_INT nRet; 
   BITMAPHANDLE   TmpBitmap; /* Temporary bitmap handle  */ 
   SAVEFILEOPTION SaveFileOption; /* File options when saving */ 
 
   /* Get a copy of the first image's bitmap handle */ 
   nRet = L_GetBitmapListItem(hList, 0, &TmpBitmap, sizeof(BITMAPHANDLE)); 
   if(nRet != SUCCESS) 
      return nRet; 
   /* Get the default SAVEFILEOPTION values */ 
   nRet = L_GetDefaultSaveFileOption(&SaveFileOption, sizeof(SAVEFILEOPTION)); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   /* Use the target bitmap's palette as the global palette */ 
   nRet = L_GetBitmapColors(pBitmap, 0, 256, SaveFileOption.GlobalPalette); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   /* Assign the other SAVEFILEOPTION fields */ 
   SaveFileOption.Flags             = ESO_GLOBALBACKGROUND|ESO_GLOBALPALETTE; 
   SaveFileOption.GlobalWidth       = TmpBitmap.Width; 
   SaveFileOption.GlobalHeight      = TmpBitmap.Height; 
   SaveFileOption.GlobalLoop        = 0; 
   SaveFileOption.GlobalBackground  = pBitmap->Background; 
 
   /* Save the bitmap list as an animated GIF file */ 
   nRet = L_SaveBitmapList(MAKE_IMAGE_PATH(TEXT("testan.gif")), hList, FILE_GIF, 8, 0, &SaveFileOption); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   return SUCCESS; 
} 
 
L_INT CopyBitmapListItemsExample(HBITMAPLIST hList) 
{ 
   L_INT nRet; 
   HBITMAPLIST    hNewList; 
   BITMAPHANDLE   LeadBitmap; 
   L_CreateBitmap(&LeadBitmap, sizeof(BITMAPHANDLE), TYPE_CONV, 300, 300, 8, ORDER_RGB, NULL, TOP_LEFT, NULL, 0); 
   /* Copy all but the first two bitmaps of the incoming list */ 
   nRet = L_CopyBitmapListItems(&hNewList, hList, 2, (L_UINT) -1); 
   if(nRet != SUCCESS) 
   { 
      L_FreeBitmap(&LeadBitmap); 
      return nRet; 
   } 
   /* Call a local function to save the new list */ 
   nRet = SaveBitmapList(&LeadBitmap, hNewList); /* Refer to the nRet = L_SaveBitmapList example */ 
   L_FreeBitmap(&LeadBitmap); 
   L_DestroyBitmapList(hNewList); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
} 

Help Version 22.0.2022.10.26
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LEADTOOLS Raster Imaging C API Help

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.