WPF Window HorizontalAlignent Stretch

Question

I have a simple task that I want to accomplish: Have a WPF window launch with a Horizontal Alignment that is stretched to the total width of the current screen. I want to achieve a kind of custom Overlay MessageBox (I dont want to use third party controls such as MahApps), I am not using any third party references for this.

Please see what I have achieved so far (Not sure if the image will show, the link is http://imgur.com/e27DyNJ ):

I have tried setting the width with a Controller object that I wrote which works, that basically sets the Width, Height, Left and Top to the width of the primary monitor. Downside is the window then pops up on the primary screen, not on the screen that is currently in use.

Answer 1

As far as I know, WPF doesn't have any multi-screen functions. You could PInvoke some native Multiple Display Monitor Functions , wrap them in a managed class and utilize them in that regard, though.

Answer 2

As a workaround, I have done the following:

var screen = System.Windows.Forms.Screen.FromRectangle(new System.Drawing.Rectangle((int)window.Left, (int)window.Top, (int)window.Width, (int)window.Height));
            window.Width = screen.WorkingArea.Width;
            window.Left = screen.WorkingArea.Left;

where window is the instance of my window I want to resize.

This works with the current screen the window was opened on.