/// <summary>
/// Gets the DPI of the monitor nearest to a window
/// </summary>
/// <param name="hWnd">Handle to the window</param>
/// <returns>DPI of the monitor nearest to the window</returns>
private static DpiScale2 GetDpiForWindowFromNearestMonitor(IntPtr hWnd)
{
IntPtr hMon =
SafeNativeMethods.MonitorFromWindow(new HandleRef(IntPtr.Zero, hWnd), NativeMethods.MONITOR_DEFAULTTONEAREST);
uint dpiX, dpiY;
int hr = (int)UnsafeNativeMethods.GetDpiForMonitor(new HandleRef(IntPtr.Zero, hMon), MONITOR_DPI_TYPE.MDT_EFFECTIVE_DPI, out dpiX, out dpiY);
// Throw if FAILED(hr)
Marshal.ThrowExceptionForHR(hr);
return(DpiScale2.FromPixelsPerInch(dpiX, dpiY));
}
private static NativeMethods.MONITORINFOEX NearestMonitorInfoFromWindow(IntPtr hwnd)
{
IntPtr hMonitor = SafeNativeMethods.MonitorFromWindow(new HandleRef(null, hwnd), NativeMethods.MONITOR_DEFAULTTONEAREST);
if (hMonitor == IntPtr.Zero)
{
throw new Win32Exception();
}
var monitorInfo = new NativeMethods.MONITORINFOEX();
SafeNativeMethods.GetMonitorInfo(new HandleRef(null, hMonitor), monitorInfo);
return(monitorInfo);
}