public static int ExtendFrameIntoClientArea(Window window, int leftWidth, int rightWidth, int topHeight, int bottomHeight)
{
try
{
// Get the window handle
IntPtr mainWindowPtr = new WindowInteropHelper(window).Handle;
HwndSource mainWindowSrc = HwndSource.FromHwnd(mainWindowPtr);
mainWindowSrc.CompositionTarget.BackgroundColor = Color.FromArgb(0, 0, 0, 0);
// Get DPI
using (var desktop = System.Drawing.Graphics.FromHwnd(mainWindowPtr))
{
float DesktopDpiX = desktop.DpiX / 96;
float DesktopDpiY = desktop.DpiY / 96;
// Set Margins
DwmMargins margins = new DwmMargins();
margins.xLeft = (int)(leftWidth * DesktopDpiX);
margins.xRight = (int)(rightWidth * DesktopDpiX);
margins.yTop = (int)(topHeight * DesktopDpiY);
margins.yBottom = (int)(bottomHeight * DesktopDpiY);
return(DwmExtendFrameIntoClientArea(mainWindowSrc.Handle, ref margins));
}
}
catch (DllNotFoundException)
{
return(-1);
}
}
public static int ExtendFrameIntoClientArea(Window window, int leftWidth, int rightWidth, int topHeight, int bottomHeight)
{
try
{
// Get the window handle
IntPtr mainWindowPtr = new WindowInteropHelper(window).Handle;
HwndSource mainWindowSrc = HwndSource.FromHwnd(mainWindowPtr);
mainWindowSrc.CompositionTarget.BackgroundColor = Color.FromArgb(0, 0, 0, 0);
// Get DPI
using (var desktop = System.Drawing.Graphics.FromHwnd(mainWindowPtr))
{
float DesktopDpiX = desktop.DpiX / 96;
float DesktopDpiY = desktop.DpiY / 96;
// Set Margins
DwmMargins margins = new DwmMargins();
margins.xLeft = (int)(leftWidth * DesktopDpiX);
margins.xRight = (int)(rightWidth * DesktopDpiX);
margins.yTop = (int)(topHeight * DesktopDpiY);
margins.yBottom = (int)(bottomHeight * DesktopDpiY);
return DwmExtendFrameIntoClientArea(mainWindowSrc.Handle, ref margins);
}
}
catch (DllNotFoundException)
{
return -1;
}
}
private static extern int DwmExtendFrameIntoClientArea(IntPtr hwnd, ref DwmMargins pMarInset);
private static extern int DwmExtendFrameIntoClientArea(IntPtr hwnd, ref DwmMargins pMarInset);