Popup Positioning

Question

Hey All,

I am currently having some issues positioning a popup control.  I have  menu with buttons, on mouse over, i would like a small popup to display with a breif dicription of what the button does or whatever.  I dont want it full screen, and i dont want it in aligned on one of the sides.  How would i position position the popup near the button or mouse on the mouseover event?  Note all the buttons are loaded dynamically.

Any pointers would be great!

Answer 1

 Hope this is helpful:

http://silverlight.net/forums/t/95489.aspx

Answer 2

There are two ways of doing this:

1. Tooltip. You can add a tooltip by utilizing the ToolTipService.Tooltip property

XAML:

<Button ToolTipService.ToolTip="Hello World!" />

 

2. Mouseover Popup:

C#:

private void PopupOpen(object sender, MouseButtonEventArgs e)
{
    Image visual = sender as Image;
    GeneralTransform transform = base.TransformToVisual(visual);
    Point point = transform.Transform(new Point(0.0, 0.0));

    PopupWindow.VerticalOffset = this.Margin.Top + Math.Abs(point.Y);
    PopupWindow.HorizontalOffset = this.Margin.Left + Math.Abs(point.X);

    PopupWindow.IsOpen = true;
}

 

Answer 3

Hi,

 I do believe that this will work, but     GeneralTransform transform = base.TransformToVisual(visual); throws a Value does not fall within expected range exception.  Any idea?

 

Answer 4

In my example, I used a popup over an Image. You can change that to the object type that you expect to mouse over.