L_UINT LBitmapList::GetCurrentIndex()
Gets the current index for the bitmap list object.
The current index for the bitmap list object.
The current index controls which item is returned when calling LBitmapList::GetNextItem and LBitmapList::GetPreviousItem.
Use zero-based indexing. For example, if there are 10 bitmaps in a list, the index of the last one is 9.
Note: If the list is empty, this function will return 0.
Win32, x64.
L_INT LBitmapList__GetCurrentIndexExample(HWND hWnd)
{
L_INT nRet;
LBitmapList BitmapList;
LBitmapBase Bitmap;
L_TCHAR szDummyBuffer[50];
L_UINT uCurrentIndex;
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;
// Set list to second item
nRet =BitmapList.SetCurrentIndex(2);
if(nRet !=SUCCESS)
return nRet;
// get the current index
uCurrentIndex = BitmapList.GetCurrentIndex ();
wsprintf(szDummyBuffer, TEXT("This is item number %d in list."), uCurrentIndex);
MessageBox(hWnd, szDummyBuffer, TEXT("LBitmapList"), MB_OK);
// destroy bitmaplist
BitmapList.Destroy ();
return SUCCESS;
}
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