private async Task InitAsync()
{
//process = await AppTest.StartAsync(@"C:\Program Files\7-Zip\7zFM.exe", 1000);
const string FileName = @"notepad";
process = await AppTest.StartAsync(FileName, 1000);
model.Program = FileName;
RECT rect, frame, client;
User32.GetClientRect(process.MainWindowHandle, out client);
User32.GetWindowRect(process.MainWindowHandle, out rect);
User32.DwmGetWindowAttribute(process.MainWindowHandle, (int)User32.DwmWindowAttribute.DWMWA_EXTENDED_FRAME_BOUNDS, out rect, Marshal.SizeOf(typeof(RECT)));
grid.Width = 1 / dpi * (rect.Right - rect.Left);
grid.Height = 1 / dpi * (rect.Bottom - rect.Top);
clientRect.Width = 1 / dpi * (client.Right - client.Left);
clientRect.Height = 1 / dpi * (client.Bottom - client.Top);
POINT p;
p.X = rect.Left;
p.Y = rect.Top;
Point relativePoint = grid.TransformToAncestor(this)
.Transform(new Point(0, 0));
POINT p2;
p2.X = 0;
p2.Y = 0;
User32.ClientToScreen(process.MainWindowHandle, ref p2);
clientRect.Margin = new Thickness((p2.X - p.X) / dpi, (p2.Y - p.Y) / dpi, 0, 0);
this.Left = (1 / dpi * p.X) - relativePoint.X;
this.Top = (1 / dpi * p.Y) - relativePoint.Y;
//this.Activate();
}