示例#1
0
        private void CreateImageDc(int width, int height, IntPtr hBmp)
        {
            IntPtr pHdc = IntPtr.Zero;

            pHdc  = NativeMethodsToop.CreateDCA("DISPLAY", "", "", 0);
            _pHdc = NativeMethodsToop.CreateCompatibleDC(pHdc);
            if (hBmp != IntPtr.Zero)
            {
                _pBmp = hBmp;
            }
            else
            {
                _pBmp = NativeMethodsToop.CreateCompatibleBitmap(pHdc, width, height);
            }
            _pBmpOld = NativeMethodsToop.SelectObject(_pHdc, _pBmp);
            if (_pBmpOld == IntPtr.Zero)
            {
                ImageDestroy();
            }
            else
            {
                _width  = width;
                _height = height;
            }
            NativeMethodsToop.DeleteDC(pHdc);
            pHdc = IntPtr.Zero;
        }
示例#2
0
 private void ImageDestroy()
 {
     if (_pBmpOld != IntPtr.Zero)
     {
         NativeMethodsToop.SelectObject(_pHdc, _pBmpOld);
         _pBmpOld = IntPtr.Zero;
     }
     if (_pBmp != IntPtr.Zero)
     {
         NativeMethodsToop.DeleteObject(_pBmp);
         _pBmp = IntPtr.Zero;
     }
     if (_pHdc != IntPtr.Zero)
     {
         NativeMethodsToop.DeleteDC(_pHdc);
         _pHdc = IntPtr.Zero;
     }
 }