Solved

JMenu doesn't go away when try to click off

Posted on 2004-09-16
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Last Modified: 2010-03-31
I'm trying to put a .jpg, a couple menus, and 2 buttons on a JFrame.  I got the .jpg in there nicely and the two buttons on the bottom and I put the menus in.  I click on the menu or use a ALT+Whatever shortcut to open a menu and that works fine, but when I click again to make it go away, a sort of imprint of it stays on the screen, like it got painted there with the .jpg.  If you want to download the source code, it's here: http://www.geocities.com/thearchitect2/Tetrix.java.  You'll also need the .jpg which is here: http://www.geocities.com/thearchitect2/tetrix.jpg.  I think it has something to do with repainting the panel or something, but I don't know how I would do that.  Thanks a lot for the help!
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Question by:thearchitect2
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7 Comments
 
LVL 92

Expert Comment

by:objects
ID: 12081106
instead of overriding paint() you should override paintComponent()
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Author Comment

by:thearchitect2
ID: 12081126
I had that in the first place, but then I switched them hoping paint() would work better.  What's the difference between the two?
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LVL 92

Expert Comment

by:objects
ID: 12081152
paint() is responsible for painting the component, it's children, it's border etc.
paintComponent() is just for painting that actual component.
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Author Comment

by:thearchitect2
ID: 12081166
Ok, that's always good to know. I tried changing it back, but it still leaves the menu there and it doesn't disappear.
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LVL 92

Accepted Solution

by:
objects earned 250 total points
ID: 12081168
try this:

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        final int newX = getIntX()/5;
        final int newY = getIntY()/12;
        final int width = newX*3;
        final int height = newY*4;
        g.drawImage(logo,newX,newY,width,height,this);
    }    //close paint()
0
 

Author Comment

by:thearchitect2
ID: 12081193
Thanks a lot! It's exactly what I wanted!  If you have time, could you explain to me how that made it work? I'm kind of a novice at Java.
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LVL 92

Expert Comment

by:objects
ID: 12081213
you need to ensure you paint all of the panels background.
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