WindowSnapshot - System Tray Utility To Surgically Capture Bitmaps of Windows/Controls On The Screen

//#include "stdafx.h"
#include "toclip.h" 
/****************************************************************
*                                 toClipboard
* Inputs:
*       CWnd * wnd: Window whose contents are to be sent 
*                   to the clipboard
*       BOOL FullWnd: TRUE for entire window, 
*                     FALSE for client area
* Result: void
*       
* Effect: 
*       Copies the contents of the client area or the window
*       to the clipboard in CF_BITMAP format.
*****************************************************************/

void toClipboard(CWnd * wnd, BOOL FullWnd)
    {
     CDC dc;
     if(FullWnd)
        { /* full window */
         HDC hdc = ::GetWindowDC(wnd->m_hWnd);
         dc.Attach(hdc);
        } /* full window */
     else
        { /* client area only */
         HDC hdc = ::GetDC(wnd->m_hWnd);
         dc.Attach(hdc);
        } /* client area only */

     CDC memDC;
     memDC.CreateCompatibleDC(&dc);

     CBitmap bm;
     CRect r;
     if(FullWnd)
        wnd->GetWindowRect(&r);
     else
         wnd->GetClientRect(&r);

     CString s;
     wnd->GetWindowText(s);
     CSize sz(r.Width(), r.Height());
     bm.CreateCompatibleBitmap(&dc, sz.cx, sz.cy);
     CBitmap * oldbm = memDC.SelectObject(&bm);
     memDC.BitBlt(0, 0, sz.cx, sz.cy, &dc, 0, 0, SRCCOPY);

     wnd->GetParent()->OpenClipboard();
     ::EmptyClipboard();
     ::SetClipboardData(CF_BITMAP, bm.m_hObject);
     CloseClipboard();

     memDC.SelectObject(oldbm);
     bm.Detach();  // make sure bitmap not deleted with CBitmap object
    }





void toClipboard_Bio(CWnd * wnd, BOOL FullWnd)
    {
     CDC *dc;
     if(FullWnd)
        { /* full window */
		 dc = new CWindowDC(wnd);
         //HDC hdc = ::GetWindowDC(wnd->m_hWnd);
         //dc -> Attach(hdc);
        } /* full window */
     else
        { /* client area only */
		 dc = new CClientDC(wnd);
         //HDC hdc = ::GetDC(wnd->m_hWnd);
         //dc -> Attach(hdc);
        } /* client area only */

     CDC memDC;
     memDC.CreateCompatibleDC(dc);

     CBitmap bm;
     CRect r;
     if(FullWnd)
        wnd->GetWindowRect(&r);
     else
         wnd->GetClientRect(&r);

     CString s;
     wnd->GetWindowText(s);
     CSize sz(r.Width(), r.Height());
     bm.CreateCompatibleBitmap(dc, sz.cx, sz.cy);
     CBitmap * oldbm = memDC.SelectObject(&bm);
     memDC.BitBlt(0, 0, sz.cx, sz.cy, dc, 0, 0, SRCCOPY);

     // Enhancement - Bio/Ahmed. Call OpenClipboard() directly instead of getting parent to do it.
     // wnd->GetParent()->OpenClipboard();
	 wnd->OpenClipboard();

     ::EmptyClipboard();
     ::SetClipboardData(CF_BITMAP, bm.m_hObject);
     CloseClipboard();

     memDC.SelectObject(oldbm);
     bm.Detach();  // make sure bitmap not deleted with CBitmap object

	 delete dc;
    }





BOOL CaptureWindowToClipboard (HWND hwndToCapture)
{
  BOOL bRet = FALSE;

  // Enhancement - Bio/Ahmed. Check first that "hwndToCapture" is a valid window.
  if((hwndToCapture) && (::IsWindow (hwndToCapture)))
  {
    bRet = TRUE;
    toClipboard_Bio((CWnd *)CWnd::FromHandle (hwndToCapture), TRUE);
  }

  return bRet;
}