private static void SetThreadDPI(DpiScalingMethod eMethod)
{
if (Environment.OSVersion.Version <
new Version(10, 0, 15063)) // Windows 10 Creators Update added SetThreadDpiAwarenessContext
{
SetProcessDPI(eMethod);
return;
}
switch (eMethod)
{
case DpiScalingMethod.None:
NativeMethods.SetThreadDpiAwarenessContext(NativeMethods.ContextDpiAwareness.Unaware);
break;
// System
case DpiScalingMethod.Zoom:
NativeMethods.SetThreadDpiAwarenessContext(NativeMethods.ContextDpiAwareness.System);
break;
// PerMonitor/PerMonitorV2
case DpiScalingMethod.Rescale:
NativeMethods.SetThreadDpiAwarenessContext(NativeMethods.ContextDpiAwareness.PerMonitorV2);
break;
// System (Enhanced)
case DpiScalingMethod.SmartZoom:
NativeMethods.SetThreadDpiAwarenessContext(
Environment.OSVersion.Version >= new Version(10, 0, 17763)
? NativeMethods.ContextDpiAwareness.UnawareGdiScaled // Windows 10 Version 1809 Added GDI+ Scaling
: NativeMethods.ContextDpiAwareness.System); // System as backup, because it's better than remaining unaware if we want GDI+ Scaling
break;
default:
throw new ArgumentOutOfRangeException(nameof(eMethod), eMethod, null);
}
Utils.BreakOnErrorIfDebug();
}
private static void SetProcessDPI(DpiScalingMethod eMethod)
{
switch (eMethod)
{
case DpiScalingMethod.None:
if (Environment.OSVersion.Version >= new Version(6, 3, 0)) // Windows 8.1 added SetProcessDpiAwareness
{
if (Environment.OSVersion.Version >= new Version(10, 0, 15063)) // Windows 10 Creators Update added SetProcessDpiAwarenessContext
{
NativeMethods.SetProcessDpiAwarenessContext(NativeMethods.ContextDPIAwareness.Unaware);
}
else
{
NativeMethods.SetProcessDpiAwareness(NativeMethods.ProcessDPIAwareness.Unaware);
}
}
break;
// System
case DpiScalingMethod.Zoom:
if (Environment.OSVersion.Version >= new Version(6, 3, 0)) // Windows 8.1 added SetProcessDpiAwareness
{
if (Environment.OSVersion.Version >= new Version(10, 0, 15063)) // Windows 10 Creators Update added SetProcessDpiAwarenessContext
{
NativeMethods.SetProcessDpiAwarenessContext(NativeMethods.ContextDPIAwareness.System);
}
else
{
NativeMethods.SetProcessDpiAwareness(NativeMethods.ProcessDPIAwareness.System);
}
}
else
{
NativeMethods.SetProcessDPIAware();
}
break;
// PerMonitor/PerMonitorV2
case DpiScalingMethod.Rescale:
if (Environment.OSVersion.Version >= new Version(6, 3, 0)) // Windows 8.1 added SetProcessDpiAwareness
{
if (Environment.OSVersion.Version >= new Version(10, 0, 15063)) // Windows 10 Creators Update added SetProcessDpiAwarenessContext and PerMonitorV2
{
NativeMethods.SetProcessDpiAwarenessContext(NativeMethods.ContextDPIAwareness.PerMonitorV2);
}
else
{
NativeMethods.SetProcessDpiAwareness(NativeMethods.ProcessDPIAwareness.PerMonitor);
}
}
else
{
NativeMethods.SetProcessDPIAware(); // System as backup, because it's better than remaining unaware if we want PerMonitor/PerMonitorV2
}
break;
// System (Enhanced)
case DpiScalingMethod.SmartZoom:
if (Environment.OSVersion.Version >= new Version(6, 3, 0)) // Windows 8.1 added SetProcessDpiAwareness
{
if (Environment.OSVersion.Version >= new Version(10, 0, 15063)) // Windows 10 Creators Update added SetProcessDpiAwarenessContext
{
NativeMethods.SetProcessDpiAwarenessContext(
Environment.OSVersion.Version >= new Version(10, 0, 17763)
? NativeMethods.ContextDPIAwareness.UnawareGdiScaled // Windows 10 Version 1809 Added GDI+ Scaling
: NativeMethods.ContextDPIAwareness.System); // System as backup, because it's better than remaining unaware if we want GDI+ Scaling
}
else
{
NativeMethods.SetProcessDpiAwareness(NativeMethods.ProcessDPIAwareness.System);
}
}
else
{
NativeMethods.SetProcessDPIAware(); // System as backup, because it's better than remaining unaware if we want GDI+ Scaling
}
break;
default:
throw new ArgumentOutOfRangeException(nameof(eMethod), eMethod, null);
}
}
