software solutions for a mobile world

Determine Light or Dark Theme with WP7 RTM

In the previous Beta release you had to compare the RGB values of the background brush to determine if the theme was Light (White background) or Dark (Black background). Now there is an additional resource you can query:-

Visibility v = (Visibility)Resources["PhoneLightThemeVisibility"];
if (v == System.Windows.Visibility.Visible)
    ImageBrush ib = new ImageBrush();
    Uri u = new Uri("PanoramaBack2.png", UriKind.Relative);
    ib.ImageSource = new System.Windows.Media.Imaging.BitmapImage(u);
    PanoramaControl.Background = ib;

Any time you use a background image you can check the PhoneLightThemeVisibility resource and switch between different versions of the image to provide the best experience with either Black or White text.

Posted Sep 17 2010, 07:04 AM by Peter Foot
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