Access a Canvas's ScaleTransform ScaleX property via Script?

If you're add this with script (with createFromXaml), you need to add the namespace declarations to the top of the XAML fragment. Then you can specify an x:Name to the ScaleTransform. If you do this you can:

var tx = host.findName("myTxName");

var scaleX = tx.scaleX;

Currently the RenderTransforms do not support iterating through their children. This might be fixed later, but currently if you have more than one of these transforms (like on a child object), the work around is to name them:

<Canvas.RenderTransform>

<ScaleTransform x:Name="someObject%8" ... />

</Canvas.RenderTransform>

Then you can get it something like this:

var cToMove = albumCanvases.GetItem(i);
var tx = cToMove.findName(cToMove.Name + i);

alert(tx.ScaleX);

ShawnWildermuth-MVP at 2007-9-4 >

In your scenario above, you should actually be able to do:

alert(myRectangle.RenderTransform.ScaleX);

This is because you only have a single Transform attached to the RenderTransform property. Please note the syntax "myRectangle.RenderTransform.ScaleTransform.ScaleX" is incorrect, since RenderTransform _is_ of type ScaleTransform; it doesn't have a ScaleTransform property.

To be precise about what is not supported on the Dec CTP, it is iterating over the Children of a TransformGroup. For example, you could not get the ScaleX property on the following ScaleTransform without giving it a Name:

<Rectangle.RenderTransform>
<TransformGroup>
<ScaleTransform ScaleX="0.8" ScaleY="0.8"/>
<TransformGroup>
</Rectangle.RenderTransform>

Hope this helps.

Ed Maia
WPF/E PM

EdMaiaMSFT at 2007-9-4 >