LBitmapList::GetCurrentIndex
#include "ltwrappr.h"
L_UINT LBitmapList::GetCurrentIndex()
Gets the current index for the bitmap list object.
Returns
The current index for the bitmap list object.
Comments
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.
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. |
See Also
Functions: |
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Topics: |
Raster Image Functions: Creating and Maintaining Lists of Images |
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Example
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(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\image1.cmp"), 0,ORDER_BGR); if(nRet !=SUCCESS) return nRet; nRet =BitmapList.InsertItem (&Bitmap); if(nRet !=SUCCESS) return nRet; nRet =Bitmap.Load(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\image2.cmp"), 0,ORDER_BGR); if(nRet !=SUCCESS) return nRet; nRet =BitmapList.InsertItem (&Bitmap); if(nRet !=SUCCESS) return nRet; nRet =Bitmap.Load(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\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; }