private double GetWindowBorderSize(CompilerWindow window)
{
// We need the WindowChrome data
window.GetWindowChrome(out WindowChrome chrome);
// We use the default
if (window.WindowState != WindowState.Maximized)
{
return(chrome.ResizeBorderThickness.Left);
}
// Get the window handle
IntPtr handle = (new WindowInteropHelper(window)).Handle;
// Get the window styles
uint style = GetWindowLongA(handle, -16);
uint exStyle = GetWindowLongA(handle, -20);
// NOTE: Can be anything, I prefer to keep it safe (aka on-screen)
const int WIN_WIDTH = 640;
const int WIN_HEIGHT = 480;
// Fill with desired position (left/top) and size (right/bottom)
RECT rect = new RECT()
{
left = 0,
right = WIN_WIDTH,
top = 0,
bottom = WIN_HEIGHT
};
// Make the call to WIN32
if (AdjustWindowRectEx(ref rect, style, false, exStyle))
{
// Perform calculations to perform a check during debugging
RECT dest = new RECT()
{
left = Math.Abs(rect.left),
top = Math.Abs(rect.top),
right = (rect.right - WIN_WIDTH),
bottom = (rect.bottom - WIN_HEIGHT)
};
Debug.Assert(dest.left == dest.right && dest.left == dest.bottom);
return(Math.Abs(dest.left));
}
else
{
Debug.WriteLine(chrome.ResizeBorderThickness.Left);
// Failsafe, use the exisiting border size
return(chrome.ResizeBorderThickness.Left);
}
}
public object Convert(Grid grid)
{
object sender = Window.GetWindow(grid);
Debug.Assert(sender != null);
CompilerWindow window = sender as CompilerWindow;
Debug.Assert(window != null);
return(Convert(window, false));
}
public object Convert(CompilerWindow window, bool adjustCaption)
{
// Get the border size
double border = GetWindowBorderSize(window);
if (adjustCaption)
{
// Adjust the caption height
AdjustCaptionHeight(window, border);
}
// Return the size of the border
return(new Thickness(border));
}
private void AdjustCaptionHeight(CompilerWindow window, double border)
{
// We need the WindowChrome data
window.GetWindowChrome(out WindowChrome chrome);
// The original caption height
double captionHeight = window.CaptionHeight;
if (window.WindowState == WindowState.Maximized)
{
// Set the new caption height (extends beyond the visible screen!)
chrome.CaptionHeight = (captionHeight + border - chrome.ResizeBorderThickness.Top);
}
else
{
chrome.CaptionHeight = captionHeight;
}
}