public void SetDesktopCaptureBitmap(Bitmap originalDesktopBitmap, Rectangle desktopArea)
{
originalDesktopCaptureBitmap = originalDesktopBitmap;
// Get a darker version of the bitmap to display
darkDesktopCaptureBitmap = BitmapService.ModifyBitmap(originalDesktopCaptureBitmap, 0.9f, 0.9f, 1.0f);
int screenLeft = SystemInformation.VirtualScreen.Left;
int screenTop = SystemInformation.VirtualScreen.Top;
int screenWidth = SystemInformation.VirtualScreen.Width;
int screenHeight = SystemInformation.VirtualScreen.Height;
// Setup this form so it covers the entire desktop area, spanning all monitors
FormBorderStyle = FormBorderStyle.None;
WindowState = FormWindowState.Normal;
Size = new Size(screenWidth, screenHeight);
Location = new Point(screenLeft, screenTop);
// Update the pixture box to show the darker desktop bitmap
pictureBox.Size = new Size(screenWidth, screenHeight);
pictureBox.Location = new Point(0, 0);
pictureBox.Image = darkDesktopCaptureBitmap;
pictureBox.Invalidate();
Cursor = Cursors.Cross;
}