Question

I have a ContextMenu, associated to a Canvas

<UserControl>
  <Grid myGrid>
    <Canvas myCanvas>
      <ContextMenu myMenu />...

I clicked on a menuItem entry, and would like to insert at this place a control (label, myLabel).

How should I set the coordinates for myLabel, in order that it corresponds to the mouse rightclick (the ContextMenu actual “location”)?..

Answer 1

You could use the ContextMenu’s TranslatePoint method, e.g. in a MenuItem’s Click event handler, like this:

Point location = myMenu.TranslatePoint(new Point(), myCanvas);

where myMenu is the ContextMenu:

<UserControl> 
    <Grid ...> 
        <Canvas ...> 
            <ContextMenu Name=myMenu />... 

Here’s how you can get the ContextMenu from the sender of a MenuItem’s Click event:

FrameworkElement parent = sender as FrameworkElement;
while (parent != null && !(parent is ContextMenu))
{
    parent = parent.Parent as FrameworkElement;
}