How to customize placement of WPF Popup?

Question

I have following code:

<Popup AllowsTransparency="True"
       PopupAnimation="Fade"
       Placement="MousePoint" VerticalAlignment="Top" HorizontalAlignment="Center"
       IsOpen="{Binding IsPopupOpen}"
       StaysOpen="True" Margin="50">
       <Label Style="{StaticResource PopupInformationLabelStyle}" 
              Content="{Binding EnumPopupText}" Margin="10,10,10,10" />
</Popup>

This popup displays exactly at the mouse position. Actually I display this popup on DataGridTextColumn editing. So it appears exactly on the textbox when I doubleclick it. So the question is:

Is it possible to add few more pixels to MousePosition? Roughly speaking I need Placement="MousePosition" + 50.

Thanks in advance

On which event do you open the popup? – aDoubleSo Nov 19 '13 at 10:51 — aDoubleSo, Nov 19 '13 at 10:51

score 1 · Accepted Answer · edited May 23 '17 at 10:31

Have a look at another similar answer: how to place a popup on a different screen. many of the links there should apply to your problem. You could get the X,Y values and add whatever you need to them.

Specifically: PlacementMode Enumeration has MousePoint. From MSDN on the MousePoint enumeration:

A position of the Popup control relative to the tip of the mouse cursor and at an offset that is defined by the HorizontalOffset and VerticalOffset property values. If a horizontal or vertical screen edge obscures the Popup, it opens in the opposite direction from the obscuring edge. If the opposite screen edge also obscures the Popup, it then aligns with the obscuring screen edge.

Cheers. Glad I could help. (you could mark it as answered if it solved your problem) — Noctis, Nov 19 '13 at 10:57

score 0 · Answer 2 · answered Nov 19 '13 at 10:57

0

Maybe that works..

  Point current = e.GetPosition(this);
  myPopup.HorizontalOffset = current.X + offset;
  myPopup.VerticalOffset = current.Y + offset;
  myPopup.IsOpen = true;

answered Nov 19 '13 at 10:57

aDoubleSo

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score -4 · Answer 3 · edited Feb 18 '19 at 01:41

-4

Set "placement" to "custom" then implement the following in your code:

Popup1.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(placePopup);

edited Feb 18 '19 at 01:41

dbc

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answered Feb 17 '19 at 21:33

Ziggy Fischer

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How to customize placement of WPF Popup?

3 Answers3