/// <summary>
/// Create a scope for the DpiAwarenessContext
/// </summary>
/// <param name="dpiAwarenessContext">DpiAwarenessContext</param>
/// <param name="alternativeAwarenessContext">DpiAwarenessContext when the first isn't accepted</param>
/// <returns>IDisposable</returns>
public static IDisposable ScopedThreadDpiAwarenessContext(DpiAwarenessContext dpiAwarenessContext, DpiAwarenessContext?alternativeAwarenessContext = null)
{
DpiAwarenessContext?previousDpiAwarenessContext = null;
if (!WindowsVersion.IsWindows10BuildOrLater(14393))
{
return(Disposable.Empty);
}
if (IsValidDpiAwarenessContext(dpiAwarenessContext))
{
previousDpiAwarenessContext = SetThreadDpiAwarenessContext(dpiAwarenessContext);
}
else if (alternativeAwarenessContext.HasValue && IsValidDpiAwarenessContext(alternativeAwarenessContext.Value))
{
previousDpiAwarenessContext = SetThreadDpiAwarenessContext(alternativeAwarenessContext.Value);
}
// Make the scope disposable
return(Disposable.Create(() =>
{
if (previousDpiAwarenessContext.HasValue)
{
SetThreadDpiAwarenessContext(previousDpiAwarenessContext.Value);
}
}));
}
/// <summary>
/// Make the current process DPI Aware, this should be done via the manifest but sometimes this is not possible.
/// </summary>
/// <returns>bool true if it was possible to change the DPI awareness</returns>
public static bool EnableDpiAware()
{
// We can only test this for Windows 8.1 or later
if (!WindowsVersion.IsWindows81OrLater)
{
Log.Verbose().WriteLine("An application can only be DPI aware starting with Window 8.1 and later.");
return(false);
}
if (WindowsVersion.IsWindows10BuildOrLater(15063))
{
if (IsValidDpiAwarenessContext(DpiAwarenessContext.PerMonitorAwareV2))
{
SetProcessDpiAwarenessContext(DpiAwarenessContext.PerMonitorAwareV2);
}
else
{
SetProcessDpiAwarenessContext(DpiAwarenessContext.PerMonitorAwareV2);
}
return(true);
}
return(SetProcessDpiAwareness(DpiAwareness.PerMonitorAware).Succeeded());
}