public static bool TryFindDpiAwarenessContextsEqual(System.Windows.Forms.DpiAwarenessContext dpiContextA, System.Windows.Forms.DpiAwarenessContext dpiContextB)
{
if (dpiContextA == System.Windows.Forms.DpiAwarenessContext.DPI_AWARENESS_CONTEXT_UNSPECIFIED && dpiContextB == System.Windows.Forms.DpiAwarenessContext.DPI_AWARENESS_CONTEXT_UNSPECIFIED)
{
return(true);
}
if (ApiHelper.IsApiAvailable("user32.dll", "AreDpiAwarenessContextsEqual"))
{
return(AreDpiAwarenessContextsEqual(dpiContextA, dpiContextB));
}
return(false);
}
public DpiAwarenessScope(System.Windows.Forms.DpiAwarenessContext awareness)
{
if (!EnableDpiChangedHighDpiImprovements)
{
return;
}
try
{
if (!CommonUnsafeNativeMethods.TryFindDpiAwarenessContextsEqual(awareness, System.Windows.Forms.DpiAwarenessContext.DPI_AWARENESS_CONTEXT_UNSPECIFIED))
{
originalAwareness = CommonUnsafeNativeMethods.GetThreadDpiAwarenessContext();
if (!CommonUnsafeNativeMethods.TryFindDpiAwarenessContextsEqual(originalAwareness, awareness) && !CommonUnsafeNativeMethods.TryFindDpiAwarenessContextsEqual(originalAwareness, System.Windows.Forms.DpiAwarenessContext.DPI_AWARENESS_CONTEXT_UNAWARE))
{
originalAwareness = CommonUnsafeNativeMethods.SetThreadDpiAwarenessContext(awareness);
dpiAwarenessScopeIsSet = true;
}
}
}
catch (EntryPointNotFoundException)
{
dpiAwarenessScopeIsSet = false;
}
}
internal static System.Windows.Forms.DpiAwarenessContext TryGetDpiAwarenessContextForWindow(IntPtr hWnd)
{
System.Windows.Forms.DpiAwarenessContext result = System.Windows.Forms.DpiAwarenessContext.DPI_AWARENESS_CONTEXT_UNSPECIFIED;
try
{
if (ApiHelper.IsApiAvailable("user32.dll", "GetWindowDpiAwarenessContext"))
{
if (ApiHelper.IsApiAvailable("user32.dll", "GetAwarenessFromDpiAwarenessContext"))
{
IntPtr windowDpiAwarenessContext = GetWindowDpiAwarenessContext(hWnd);
DPI_AWARENESS awarenessFromDpiAwarenessContext = GetAwarenessFromDpiAwarenessContext(windowDpiAwarenessContext);
result = ConvertToDpiAwarenessContext(awarenessFromDpiAwarenessContext);
return(result);
}
return(result);
}
return(result);
}
catch
{
return(result);
}
}
public static IDisposable EnterDpiAwarenessScope(System.Windows.Forms.DpiAwarenessContext awareness)
{
return(new DpiAwarenessScope(awareness));
}
public static System.Windows.Forms.DpiAwarenessContext TrySetThreadDpiAwarenessContext(System.Windows.Forms.DpiAwarenessContext dpiCOntext)
{
if (ApiHelper.IsApiAvailable("user32.dll", "SetThreadDpiAwarenessContext"))
{
return(SetThreadDpiAwarenessContext(dpiCOntext));
}
return(System.Windows.Forms.DpiAwarenessContext.DPI_AWARENESS_CONTEXT_UNSPECIFIED);
}
internal static extern bool AreDpiAwarenessContextsEqual(System.Windows.Forms.DpiAwarenessContext dpiContextA, System.Windows.Forms.DpiAwarenessContext dpiContextB);
internal static extern System.Windows.Forms.DpiAwarenessContext SetThreadDpiAwarenessContext(System.Windows.Forms.DpiAwarenessContext dpiContext);
