private void GrabButton_Click(object sender, System.Windows.RoutedEventArgs e) { // TODO: Add event handler implementation here. //ShowScreenWindowAction action = new ShowScreenWindowAction(); ScreenWindow screenWindow = new ScreenWindow(); bool? isActived = screenWindow.ShowDialog(); if (screenWindow.IsScreenRegionSelected) { Point p0 = screenWindow.P0; Point p1 = screenWindow.P1; this.ResultTextBox.Text = string.Format("SelectionRegion: ({0}, {1}), ({2}, {3})", new object[] { p0.X, p0.Y, p1.X, p1.Y }); } else { this.ResultTextBox.Text = string.Format("No SelectionRegion"); } screenWindow.Close(); }