L_ILM_EXPORTBITMAPLIST

Send this message to export a number of bitmaps from the ImageList Control to a Bitmap List.

Returns

Comments

You must set the uStructSize member of the LILEXPORTBITMAPLIST structure before using this message.

The list of bitmaps will be exported from the ImageList control into the passed hList starting from nStartIndex to (nStartIndex + nItemsToExport 1).

If you passed NULL into the hList member of the passed LILEXPORTBITMAPLIST structure, this parameter hList will be created internally and is going to contain all the exported bitmaps.

After exporting the list of bitmaps successfully from the ImageList control, dont try to free the bitmaps of the exported list hList, since it is going to have a reference to the original bitmaps not a copy of them.

The associated macro is:

L_ImgListExportBitmapList(hWnd, pExportList)

For a complete list of available macros, refer to the Ltlst.h file.

See Also

Example

 L_INT ILM_EXPORTBITMAPLISTExample(HWND hCtrl, L_TCHAR * lpOutputFileName) 
{
   if(IsWindow(hCtrl)) 
   {
      L_INT nRet = SUCCESS;
      // Check if the ImageList control has more than 4 images. 
      if(SendMessage(hCtrl, L_ILM_GETITEMCOUNT, 0, 0L) > 4) 
      {
         LILEXPORTBITMAPLIST ExportList; 
         ZeroMemory(&ExportList, sizeof(LILEXPORTBITMAPLIST)); 

         ExportList.uStructSize     = sizeof(LILEXPORTBITMAPLIST); 
         ExportList.nStartIndex     = 1; // Start from index 1
         ExportList.nItemsToExport  = 2; // Export only 2 images. 

         // Export images
         nRet = (L_INT)SendMessage(hCtrl, L_ILM_EXPORTBITMAPLIST, (WPARAM)0, (LPARAM)(&ExportList)); 

         // Check if the images exported successfully
         if(ExportList.hList) 
         {
            // Save the exported images to a disk-file
            nRet = L_SaveBitmapList(lpOutputFileName,
               ExportList.hList, 
               FILE_GIF, 
               0, 
               2, 
               NULL); 
         }
      }
      return nRet;
   }
   else
      return ERROR_INVALID_PARAMETER;
}