private Image CaptureWindow(IntPtr pHandle)
{
// Gets window size
User32ImportClass.RECT lWindowRect = new User32ImportClass.RECT();
User32ImportClass.GetWindowRect(pHandle, ref lWindowRect);
int lWindowWidth = lWindowRect.right - lWindowRect.left;
int lWindowHeight = lWindowRect.bottom - lWindowRect.top;
// Gets hDC of target window
IntPtr lHdcSrc = User32ImportClass.GetWindowDC(pHandle);
// Creates destination device context
IntPtr lHdcDest = GDI32ImportClass.CreateCompatibleDC(lHdcSrc);
// Creates destination bitmap
IntPtr lHBitmap = GDI32ImportClass.CreateCompatibleBitmap(lHdcSrc, lWindowWidth, lWindowHeight);
// Selects bitmap
IntPtr lHOldObject = GDI32ImportClass.SelectObject(lHdcDest, lHBitmap);
// Captures window
GDI32ImportClass.BitBlt(lHdcDest, 0, 0, lWindowWidth, lWindowHeight, lHdcSrc, 0, 0, GDI32ImportClass.SRCCOPY);
// Restores old selection
GDI32ImportClass.SelectObject(lHdcDest, lHOldObject);
// Cleans up
GDI32ImportClass.DeleteDC(lHdcDest);
User32ImportClass.ReleaseDC(pHandle, lHdcSrc);
// Gets a Image object
Image rImage = Image.FromHbitmap(lHBitmap);
// Frees Bitmap object
GDI32ImportClass.DeleteObject(lHBitmap);
return rImage;
}
private Int32[] GetBitmapInt32ArrayFromWindow(IntPtr pHandle)
{
// Gets window size
User32ImportClass.RECT lWindowRect = new User32ImportClass.RECT();
User32ImportClass.GetWindowRect(pHandle, ref lWindowRect);
this._state.Area = new Rectangle(0, 0, lWindowRect.right - lWindowRect.left, lWindowRect.bottom - lWindowRect.top);
this._state.SelectedWindowOffsetX = lWindowRect.left;
this._state.SelectedWindowOffsetY = lWindowRect.top;
// Gets hDC of target window
IntPtr lHdcSrc = User32ImportClass.GetWindowDC(pHandle);
// Creates destination device context
IntPtr lHdcDest = GDI32ImportClass.CreateCompatibleDC(lHdcSrc);
// Creates destination bitmap
IntPtr lHBitmap = GDI32ImportClass.CreateCompatibleBitmap(lHdcSrc, this._state.Area.Width, this._state.Area.Height);
// Selects bitmap
IntPtr lHOldObject = GDI32ImportClass.SelectObject(lHdcDest, lHBitmap);
// Captures window
GDI32ImportClass.BitBlt(lHdcDest, 0, 0, this._state.Area.Width, this._state.Area.Height, lHdcSrc, 0, 0, GDI32ImportClass.SRCCOPY);
// Restores old selection
GDI32ImportClass.SelectObject(lHdcDest, lHOldObject);
// Cleans up
GDI32ImportClass.DeleteDC(lHdcDest);
User32ImportClass.ReleaseDC(pHandle, lHdcSrc);
//Gets bitmap
Bitmap lBMP = Bitmap.FromHbitmap(lHBitmap);
// Frees Bitmap object
GDI32ImportClass.DeleteObject(lHBitmap);
// Gets bitmap data
BitmapData lBMPData = lBMP.LockBits(new Rectangle(0, 0, lBMP.Width, lBMP.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
// Creates new array of Int32 to return
Int32[] rArray = new Int32[this._state.Area.Width * this._state.Area.Height];
// Copies bitmap data to Int32 array
Marshal.Copy(lBMPData.Scan0, rArray, 0, rArray.Length);
// Returns Int32 array
return rArray;
}
