windows-8.1

I'm currently looking to implement a CommandBar for a WinRT Windows Phone 8.1 app. Overall it is very straightforward but I am unable to style the control. I have themed my app so that the accent colour has been changed to green. This works well for pretty much everywhere in the app (buttons, textblocks etc.) but not for the AppBarButton. The brushes I'm overriding are SystemColorControlAccentBrush and PhoneAccentBrush but changing these does not make any difference to the colour of the AppBarButton when pressed: Any idea what I'm doing wrong/can this colour be changed? Set the CommandBar's

My Windows 8.1 App was working fine on Knockout 2.3 but after updating to 3.3 it seems like I get the wrong Context in my custom binding. First here is how I apply binding for individual elements in the command bar of my app : var cmdArray = []; var commandIsRunning = function() { return _.any(cmdArray, function(command) { return command.isRunning(); }); }; _.each(_bottomCommands, function (row) { if(row.command) { // command wrapper var commandWrapper = ko.command({ action: function() { var rowCommand = row.command(); if (rowCommand) { return rowCommand(); } return WinJS.Promise.as(); },

In Windows 8, you were able to create your own themes for your application ( here's a tutorial ). In Windows 8.1 Applications, themes are handled differently: you can change them at run-time and set a theme for a specific control in your XAML (if you don't want to apply the theme to the whole Application). For instance: <Grid x:Name="MainGrid" RequestedTheme="Dark"> However, I could not find a way to create my own themes. The property RequestedTheme takes an enumeration (its type is FrameworkElement.RequestedTheme ) and an enumeration by definition cannot be extended (in C#). Also, if I want

I have a Windows 8.1 XAML app where I'd like to preload images before navigating between pages. The naive code I have now is: // Page1.xaml.cs private void Button_Click(object sender, RoutedEventArgs e) { Frame.Navigate(typeof(Page2)); } And on the second page: // Page2.xaml.cs this.image1.Source = new BitmapImage(new Uri("ms-appx:///Assets/image1.jpg")); this.image2.Source = new BitmapImage(new Uri("ms-appx:///Assets/image2.jpg")); Now, when I click the button to navigate, I can see the images being loaded and showing up one at the time. I would like to pre-load the images on the button click