Question

How do I determine the position a WPF window control in another process? The following code return source=null, therefore I can’t traverse through all controls to find and determine the control position.

Process[] procs = Process.GetProcesses();
        foreach(Process p in procs)
        {
            if (p.MainWindowHandle != null)
            {
                StringBuilder sb = new StringBuilder(257);
                RealGetWindowClass(p.MainWindowHandle, sb, 256);
                if(sb.ToString().StartsWith("HwndWrapper"))
                {
                    System.Windows.Interop.HwndSource source = System.Windows.Interop.HwndSource.FromHwnd(p.MainWindowHandle);
                    EnumVisual(source.RootVisual);
                }
            }
        }

Answer 1

I’m using Project White for automation. With this project you can find WinForms and WPF windows and access their properties, have a look! This way you don’t need to use the low level Windows API.