JPopupMenu display under Canvas

Question

I have a Canvas, some text fields and a context menu.

When I start the application and right click on the canvas a popup menu shows. But when I write something inside the text field than I right click on the canvas, the popup will shows behind the canvas.

Any idea how to fix that ?

put up some code, ideally an SSCE. Usually, just by writing an SSCE you will find your issue. — Guillaume Polet, Mar 06 '12 at 17:19

score 6 · Accepted Answer · answered Mar 06 '12 at 20:08

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JPopupMenu.setDefaultLightWeightPopupEnabled( false );

solved the issue.

answered Mar 06 '12 at 20:08

Guillaume Massé

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This call affects all popup menus that will be created in future. Usually it is enough to modify `lightWeightPopupEnabled` property of the particular JPopup instance by calling `popup.setLightWeightPopupEnabled(false)`. – Petr Mar 16 '18 at 08:26

score 3 · Answer 2 · edited Mar 16 '18 at 09:35

3

1) Canvas is AWT Component, and is Heavyweight type of Components

2) JPopupMenu is Swing JComponent and is Lightweight type of JComponents

3) possible to solve that by using Swing JPanel rather than AWT Canvas

4) your issue is about Mixing Heavyweight and Lightweight Components or rest is here

edited Mar 16 '18 at 09:35

Petr

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answered Mar 06 '12 at 17:24

mKorbel

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I need a Heavyweight component to draw into it with opengl. – Guillaume Massé Mar 06 '12 at 18:10
agreed correct way for OpenGL, your choice is more simpler than use JPopup use Window or un_decorated Dialog, there you can put Swing JButtons, for laying use GridLayout – mKorbel Mar 06 '12 at 18:26
Uggh.. adding replies before I've had my coffee is pointless. +1 – Andrew Thompson Mar 07 '12 at 05:19
@Andrew Thompson maybe your insomnia :-) – mKorbel Mar 07 '12 at 07:08

JPopupMenu display under Canvas

2 Answers2

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