public static bool SetAppMode(PreferredAppMode appMode)
{
var build = Environment.OSVersion.Version.Build;
if (build >= 18362)
{
// memo: Workaround for the problem of not switching from dark theme to light theme.
if (appMode == PreferredAppMode.APPMODE_DEFAULT || appMode == PreferredAppMode.APPMODE_FORCELIGHT)
{
UxTheme.SetPreferredAppMode(PreferredAppMode.APPMODE_ALLOWDARK);
UxTheme.RefreshImmersiveColorPolicyState();
}
var ret = UxTheme.SetPreferredAppMode(appMode) == appMode;
UxTheme.RefreshImmersiveColorPolicyState();
return(ret);
}
else if (build >= 17763)
{
if (appMode == PreferredAppMode.APPMODE_DEFAULT || appMode == PreferredAppMode.APPMODE_FORCELIGHT)
{
return(UxTheme.AllowDarkModeForApp(false));
}
else
{
return(UxTheme.AllowDarkModeForApp(true));
}
}
return(false);
}
public static bool SetDarkModePreference(PreferredAppMode mode)
{
if (EnvironmentHelper.IsWindows10DarkModeSupported)
{
return(SetPreferredAppMode(mode));
}
return(false);
}
public static extern bool SetPreferredAppMode(PreferredAppMode mode);
internal static extern PreferredAppMode SetPreferredAppMode(PreferredAppMode appMode); // RS6 1903
public static extern PreferredAppMode fnSetPreferredAppMode(IntPtr hwnd, PreferredAppMode appMode);
