Home/ Questions/Q 3310612
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-17T21:46:49+00:00

I have a simple WPF Popup that I am showing when the user clicks

  • 0

I have a simple WPF Popup that I am showing when the user clicks a Button.

<Button
    x:Name="aButton"
    Content="Up/Down"
    Width="75"
    Height="30"
    Click="aButton_Click"
/>
<Popup
    PlacementTarget="{Binding ElementName=aButton}"
    Placement="Right"
    VerticalOffset="-31"
    StaysOpen="False"
    AllowsTransparency="True"
>
    <StackPanel>
        <Button Width="45" Height="45" Margin="2,0,2,2" Content="+"/>
        <Button Width="45" Height="45" Margin="2,0,2,0" Content="-"/>
    </StackPanel>
</Popup>

What is extremely weird … is that this code works differently depending on what machine it runs on.

I run this code on my main desktop and everything works just fine … and as it should. I run it on my PDC09 netbook … and the Popup shows opposite (on the left instead of the right as I told it to with the Placement property).

Why is this? And what can I do about it?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    I couldn’t find anything via Google … but a lucky search in the WPF forum, quickly found this post. Note to self: don’t forget to search the WPF forums if Google can’t find anything.

    The answer is that my PDC09 netbook is a Tablet PC at heart, and apparently, Microsoft thought it was a good idea to show the Popup opposite to the Placement property on a Tablet PC that is configured for right-handed people … such that the Popup doesn’t appear under the user’s hand.

    The solution is to revert to custom Popup placement … if you don’t want this behavior.

    I would love to hear about any other ways around this problem.

    • 0