wpfstylesdropshadow

WPF DropShadowEffect with AllowsTransparency="True"

I want to create Non-Rectangular Window with DropShadowEffect on it. I found this article how to do this. However DropShadowEffect is not shown when running this code. On screenshots you can see that DropShadowEffect is present, but it's not working for me.

How I can use DropShadowEffect with AllowsTransparency set to True?

Solution

  • I just tried the following code in Kaxaml and got a rounded box with a drop shadow.

    Rounded box with drop shadow

    I suggest you try Kaxaml too, just to separate your experiments from whatever other code you might have. If this exact code does not show a drop shadow, then the problem must be with your system.

    <Window
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  WindowStartupLocation="CenterScreen"
  WindowStyle="None"
  AllowsTransparency="True"
  Background="Transparent"
  >
  
<Border CornerRadius="10"
        BorderBrush="Gray"
        BorderThickness="3"
        Background="AliceBlue"
        Margin="24"
        Padding="4"
        Width="100"
        Height="100"
        >
  <Border.Effect>
    <DropShadowEffect Color="Gray"
                      Opacity=".50"
                      ShadowDepth="16" />
  </Border.Effect>
  
  <Grid Background="AliceBlue">
      <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center">Hello world.</TextBlock>
  </Grid>
  </Border>
</Window>