LBitmapList::IsCreated

#include "ltwrappr.h"

virtual L_BOOL LBitmapList::IsCreated()

Determines whether a bitmap list has been created.

Returns

TRUE	A bitmap list has been created.
FALSE	A bitmap list has not been created.

Comments

The class object must contain a created bitmap list before you can use functions to insert, remove, or otherwise access bitmap list items.

You can create a bitmap list for the class object by doing one of the following:

calling LBitmapList::Create
calling the constructor LBitmapList(LBitmapList * pBitmapList)
using the = operator
using LBitmapList::Load
calling LBitmapList::CopyItems
calling LBitmapList::SetBitmapList
calling LBitmapList::SetHandle.

Required DLLs and Libraries

LTFIL

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

Functions:	Class Members
Topics:	Raster Image Functions: Playing Animated Images
	Implementing Animation

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT LBitmapList__IsCreatedExample(HWND hWnd)
{
   L_INT nRet;
   LBitmapList BitmapList;
   LBitmapBase Bitmap;
   L_BOOL bIsCreated;
   nRet =BitmapList.Create ();
   if(nRet !=SUCCESS)
      return nRet;
   // load three images and insert them in the list
   nRet =Bitmap.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp")), 0,ORDER_BGR);
   if(nRet !=SUCCESS)
      return nRet;
   nRet =BitmapList.InsertItem (&Bitmap);
   if(nRet !=SUCCESS)
      return nRet;
   nRet =Bitmap.Load(MAKE_IMAGE_PATH(TEXT("image2.cmp")), 0,ORDER_BGR);
   if(nRet !=SUCCESS)
      return nRet;
   nRet =BitmapList.InsertItem (&Bitmap);
   if(nRet !=SUCCESS)
      return nRet;
   nRet =Bitmap.Load(MAKE_IMAGE_PATH(TEXT("ImageProcessingDemo\\Image3.cmp")), 0,ORDER_BGR);
   if(nRet !=SUCCESS)
      return nRet;
   nRet =BitmapList.InsertItem (&Bitmap);
   if(nRet !=SUCCESS)
      return nRet;
   // get the internal handle
   bIsCreated = BitmapList.IsCreated ();
   if(bIsCreated == TRUE)
      MessageBox(hWnd, TEXT("List created successfully"), TEXT("LBitmapList"), MB_OK);
   // destroy the list
   BitmapList.Destroy ();
   
   return SUCCESS;
}