LImageListControl::Update

#include "ltwrappr.h"

L_INT LImageListControl::Update(pItem, nIndex)

pLILITEM pItem;	pointer to a pItem structure
L_INT nIndex;	index of the item to update

Updates the specified item in the ImageList Control.

Parameter	Description
pItem	Pointer to an LILITEM structure that contains new attributes for the item at the specified index.
nIndex	0-based index that indicates which item to update.

Returns

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

Comments

The LILITEM structure pointed to by pItem specifies the information to with which to update the specified item. The uMask member of the LILITEM structure indicates the attributes of the item to update.

Note: When you update an item, the image and text (if any) are copied to internal storage. The ImageList Control will free its copy of the image and/or text when the item is deleted. You are responsible for freeing the original data when it is no longer needed by your application.

Required DLLs and Libraries

LTDIS
LTFIL
LTIMG

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.

Example

L_INT LImageListControl__UpdateExample(LImageListControl& ImgList) 
{ 
   L_INT nRet; 
   LILITEM Item; 
   LBitmapBase Bitmap; 
   // get the item's image 
   Item.uStructSize = sizeof(LILITEM); 
   Item.uMask = LILITEM_BITMAP; 
   nRet = ImgList.GetItem(&Item, 0);// get first item 
   if(nRet != SUCCESS) 
      return nRet; 
   // flip the image 
   Bitmap.SetHandle(Item.pBitmap); 
   nRet = Bitmap.Flip(); 
   if(nRet != SUCCESS) 
      return nRet; 
   Item.pBitmap = Bitmap.GetHandle(); 
   // change the item's image and text 
   Item.pText = TEXT("Flipped Image"); 
   Item.uMask = LILITEM_BITMAP | LILITEM_TEXT ; 
   nRet = ImgList.Update(&Item, 0);// update the item 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Raster Imaging C++ Class Library Help

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Summary of Features

Functions:	LImageListControl::ExportBitmapList, LImageListControl::ImportBitmapList, LImageListControl::SortExt. Class Members
Topics:	Using the ImageList Control