[UWP] [C++] How do I set theme as system default?

Question

Hello,

I'm trying to create an app setting in c++ uwp and it has three radio buttons: "Light" "Dark" and "System Default". How do get the system default (light, dark, etc.) when I initialize the app? Thank you.

Answer 1

Save "System Theme" to app data and on app initialization, do this:

auto DefaultTheme = ref new Windows::UI::ViewManagement::UISettings();
auto uiTheme = DefaultTheme->GetColorValue(Windows::UI::ViewManagement::UIColorType::Background).ToString();
if (uiTheme == "#FF000000")
{
    App::Current->RequestedTheme = ApplicationTheme::Dark;
}
else if (uiTheme == "#FFFFFFFF")
{
    App::Current->RequestedTheme = ApplicationTheme::Light;
}