Complex ToolTip
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Title="About WPF" Background="OrangeRed"> <Canvas> <CheckBox> CheckBox <CheckBox.ToolTip> <StackPanel> <Label FontWeight="Bold" Background="Blue" Foreground="White"> The CheckBox </Label> <TextBlock Padding="10" TextWrapping="WrapWithOverflow" Width="200"> this is a test </TextBlock> <Line Stroke="Black" StrokeThickness="1" X2="200"/> <StackPanel Orientation="Horizontal"> <Image Margin="2" Source="help.png"/> <Label FontWeight="Bold">Press F1 for more help.</Label> </StackPanel> </StackPanel> </CheckBox.ToolTip> </CheckBox> </Canvas> </Window>