How can I use multiple ControlTemplates in a XAML-file?

Question

I\'m having this annoying problem with WPF that I can\'t get my head around. What I\'m trying to create, is a very basic implementation of a drawing program (it\'s a school assi

Answer 1

ControlTemplate can only contain one child. Try and change it to a Canvas instead

        <Style x:Key="fillTool" TargetType="{x:Type Thumb}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Thumb}">
                        <Canvas>
                           <Ellipse HorizontalAlignment="Left" Height="19" Margin="310,330,0,0" VerticalAlignment="Top" Width="19" Fill="Blue"/>
                           <Ellipse HorizontalAlignment="Left" Height="12" Margin="317,316,0,0" VerticalAlignment="Top" Width="12" Fill="Blue"/>
                           <Ellipse HorizontalAlignment="Left" Height="8" Margin="307,320,0,0" VerticalAlignment="Top" Width="7" Fill="Blue"/>
                           <Ellipse HorizontalAlignment="Left" Height="3" Margin="317,302,0,0" VerticalAlignment="Top" Width="3" Fill="Blue"/>
                           <Ellipse HorizontalAlignment="Left" Height="5" Margin="311,310,0,0" VerticalAlignment="Top" Width="5" Fill="Blue"/>
                        </Canvas>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>