If you use a canvas to show the liquid menu, it's easy:

            Point p = e.GetPosition(this);

            Canvas.SetLeft(popupMenu, p.X);

            Canvas.SetTop(popupMenu, p.Y);

            popupMenu.Show();

            e.Handled = true;

If you use a grid however, you can't use Canvas.SetLeft e.t.c, so do something like this instead:

            Point p = e.GetPosition(LayoutRoot);

            popupMenu.SetValue(MarginProperty,

                new Thickness(

                    p.X,

                    p.Y,

                    ((ActualWidth - p.X)-140),

                    ((ActualHeight - p.Y)- 30)));

            popupMenu.Show();

            e.Handled = true;

140 & 30 is the size of my menu "box", there may be a better way to pass those parameters in, or even a better way to do the whole thing, but I couldn't see any samples on this site showing how to "show a popup in the right place" if you're using a grid as your layoutroot - so I hope this helps someone.

Hi,

Thanks for sharing this.  Having looked at this myself the best way to position a popup menu or anything else you want to popup I think is to use the TranslateTransform property:

<Grid x:Name="LayoutRoot" Background="White">

    <liquidMenu:Menu x:Name="myMenu" HorizontalAlignment="Left" VerticalAlignment="Top">

        <liquidMenu:Menu.RenderTransform>

            <TranslateTransform x:Name="myMenuTranslation" X="100" Y="100" />

        </liquidMenu:Menu.RenderTransform>

        <liquidMenu:MenuItem ID="undo" Shortcut="Ctrl+Z" Text="Undo" />

        <liquidMenu:MenuItem ID="redo" Shortcut="Ctrl+Y" Text="Redo" />

        <liquidMenu:MenuDivider />

        <liquidMenu:MenuItem ID="cut" Shortcut="Ctrl+X" Text="Cut" />

        <liquidMenu:MenuItem ID="copy" Shortcut="Ctrl+C" Text="Copy" />

        <liquidMenu:MenuItem ID="paste" Shortcut="Ctrl+V" Text="Paste" />

    </liquidMenu:Menu>

</Grid>

Changing the HorizontalAlignment="Left" VerticalAlignment="Top" means you will not have to specify a width/height on your menu, without these the menu would stretch.

To control the X/Y position you would do something like this:

myMenuTranslation.X = newX;

myMenuTranslation.Y = newY;

You could use this no matter what your popup is contained within.  Whether it's a Grid or Canvas it will work the same.  Hope this helps.

Thanks! Dan