DEMO: 5 gotchas combining SketchFlow, Visual Design and Silverlight Banners

Recently we created a demo. It was in SketchFlow, but it was not really a sketchy demo. Some screens are in the typical SketchFlow look, but for three important scenarios we’ve created a Visual Design. For the Homepage and a Product page in the demo we even created a Silverlight Banner, including the navigation inside the banner.

We’ve actually presented it inside the SketchFlow Player with panels collapsed. We gained the ease with which to connect the screens, in combination with the Behaviors the make parts of the demo interactive. And we combined real Silverlight applications inside the SketchFlow demo and they worked just fine. This is a demo that is meant to impress a customer.

I’ve collected some some gothas we run into when creating this demo:

  1. Large images are not include as a Resource, but as Content. In the Blend Options screen you’ll find a slider setting the limit for large images. You’ll get a warning when you import an image larger than that limit. You can choose to include the image as Content, not as Resource. This will result in the image not showing in your SketchFlow Player. So be sure to include all images in a subfolder in the MyProject_Screens folder and make sure the path in the Image Source is correct. When images show up in the root of a deployed SketchFlow project, you’re in trouble…
  2. When you use a Silverlight application inside a SketchFlow Page, you can use the NavigateToScreenAction inside your UserControl, but screens will not show up in the list in the Properties Panel. It has no use to create a reference to the SketchFlow project. You can add the correct path manually. You can find the names of the Screens in the Projects Tab.
    <i:EventTrigger EventName="MouseLeftButtonDown">
        <pi:NavigateToScreenAction TargetScreen="MyProject_DemoScreens.Screen_1"/>
  3. You can use Components as Masterpages. Remove all elements in the Visual Design that change between pages and put the rest in a Component screen. This allows you use this UserControl as the first element of a page. You can create separate boxes with content on the page to link to different pages in the prototype.
  4. Alternatively, use HyperlinkButtons with NavigateToScreenActions Behaviors to create “HotSpots” on a background image if you want to navigate to different screens. You’ll have to edit the HyperlinkButton ControlTemplate to remove the FocusVisual that appears when you click the control. Then they are invisible, but still catch the Click Event for the NavigateToScreenAction. It will navigate to the screen you enter as a Target.
  5. Use SketchFlowAnimation or GoToStateAction Behaviors for interactive elements on the page. This way you can use highlights and let pop-ups appear and disappear. SketchFlow Behaviors rock!


Silverlight Togglebutton Push Pin Style with IsoStore

Now you can pin a full-screen app to a second monitor in Silverlight 4, you may want an UI control to facilitate this. In fact, what you need is a ToggleButton. And your ToggleButton has to be communicate it’s function. A Push Pin Style is a good solution for that.

This Push Pin Style for a silverlight (or WPF) ToggleButton is small, totally customizable and free :). It features tooltips to show the action you can do. The setting is stored in IsoStore and picked up the next time you start your app. The states are each represented using a canvas, so you can easily swap the visuals for your own if you want to.


The XAML is simple:

<ToggleButton x:Name="btnPin" Style="{StaticResource btnPin}" Checked="pin" Unchecked="unpin" Content="" ToolTipService.ToolTip="Pin this"/>

Files are too large to include here, but I put the project on my SkyDrive.


ScreenMachine in Silverlight Showcase

It took a while, but my personal porftolio in Silverlight called ScreenMachine, has appeared in The Silverlight showcase. You can also reach it through the ADdendum blog, too. When you select The Netherlands as Geography in the left menu of the Showcase you can find it as fourth on the first row (for now).

ScreenMachineInShowCaseSmall Njoy!

Edit Oct 2011: The new url for the Screenmachine is :

It is placed in the News Category and it is on the 16th page or

in th Silverlight 4 Category on page 61…