protected ScreenShot()
{
Rectangle bounds = Screen.PrimaryScreen.Bounds;
_captureBitmap = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format24bppRgb);
using (Graphics captureGraphics = Graphics.FromImage(_captureBitmap))
{
captureGraphics.CopyFromScreen(bounds.Location, new Point(0, 0), bounds.Size);
}
_screenWindow = ScreenShotWindow.ScreenWindow;
_screenWindow.CullObscuredAncestors();
}
public static Region FindWindowVisibleRegion(ScreenShotWindow topWindow, ScreenShotWindow window, bool includeChildWindows)
{
Stack<ScreenShotWindow> stack = new Stack<ScreenShotWindow>();
Region region = new Region();
region.MakeEmpty();
try
{
stack.Push(topWindow);
bool windowHasBeenDrawn = false;
while (stack.Count > 0)
{
ScreenShotWindow currentWindow = stack.Pop();
if (currentWindow == window)
{
region.Union(currentWindow.Bounds);
windowHasBeenDrawn = true;
}
else
{
if (windowHasBeenDrawn)
{
region.Exclude(currentWindow.Bounds);
}
}
if (currentWindow != window || !includeChildWindows)
{
foreach (ScreenShotWindow childWindow in currentWindow.Children)
{
stack.Push(childWindow);
}
}
}
return region;
}
catch (Exception)
{
region.Dispose();
throw;
}
}
protected void PopulateAncestors()
{
_children = new List<ScreenShotWindow>();
IList<SystemWindow> childWindows;
if (_systemWindow == null)
{
childWindows = SystemWindow.TopLevelWindows;
}
else
{
childWindows = _systemWindow.ChildWindows;
}
foreach (SystemWindow childSystemWindow in childWindows)
{
if (!childSystemWindow.IsVisible) continue;
ScreenShotWindow window = new ScreenShotWindow(childSystemWindow);
_children.Add(window);
window.PopulateAncestors();
}
}
public static ScreenShotWindow FindWindowByPoint(ScreenShotWindow topWindow, Point point)
{
if (!topWindow.Bounds.Contains(point)) return null;
ScreenShotWindow containingChild = null;
foreach (ScreenShotWindow child in topWindow.PaintOrderChildren)
{
if (child.Bounds.Contains(point)) containingChild = child;
}
if (containingChild != null)
{
return FindWindowByPoint(containingChild, point);
}
else
{
return topWindow;
}
}
