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Centre Focused Window Over its Parent Window

Description
This script will centre the focused window over its parent window. This requires the focused window to be an "owned" window.
Language
C#.net
Minimum Version
Created By
Jon Tackabury (BFS)
Contributors
-
Date Created
Jul 23, 2018
Date Last Modified
Jul 23, 2018

Scripted Function (Macro) Code

using System;
using System.Drawing;

// The 'windowHandle' parameter will contain the window handle for the:
//   - Active window when run by hotkey
//   - Trigger target when run by a Trigger rule
//   - TitleBar Button owner when run by a TitleBar Button
//   - Jump List owner when run from a Taskbar Jump List
//   - Currently focused window if none of these match
public static class DisplayFusionFunction
{
    public static void Run(IntPtr windowHandle)
    {
       IntPtr windowHandleParent = BFS.Window.GetOwner(windowHandle);
       if (windowHandleParent == IntPtr.Zero)
       {
           BFS.Dialog.ShowTrayMessage("Window has no owner.");
           return;
       }
                   
        Rectangle rectChild = BFS.Window.GetBounds(windowHandle);
        Rectangle rectParent = BFS.Window.GetBounds(windowHandleParent);
        BFS.Window.SetLocation(
           windowHandle,
           rectParent.X + ((rectParent.Width - rectChild.Width) / 2),
           rectParent.Y + ((rectParent.Height - rectChild.Height) / 2));
    }
}