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Java Forum / GUI / April 2004JPopupMenu location
Hello, I am showing JPopupMenu by JPopupMenu.show(invoker, x, y), and as x and y i pass mouseEvent coordinates. But next when in action I obtain this JPopupMenu and call JPopupMenu.getLocation() I receive Point(0, 0). Anybody knows how to obtain correct location of JPopupMenu? Regards amorfis > I am showing JPopupMenu by JPopupMenu.show(invoker, x, y), and as x and y i > pass mouseEvent coordinates. But next when in action I obtain this > JPopupMenu and call JPopupMenu.getLocation() I receive Point(0, 0). > > Anybody knows how to obtain correct location of JPopupMenu? Component locations are always in the coordinate system of the parent. Maybe you want getLocationOnScreen, or see SwingUtilities for conver- sion of locations between different component coordinate systems. Christian >> I am showing JPopupMenu by JPopupMenu.show(invoker, x, y), and as x and y >> i pass mouseEvent coordinates. But next when in action I obtain this [quoted text clipped - 6 lines] > Maybe you want getLocationOnScreen, or see SwingUtilities for conver- > sion of locations between different component coordinate systems. No, problem is it does not work at all. I always get Point(0, 0), wherever on the parent JPopupMenu appears. It is not correct, is it? regards Pawel Stawicki >>> I am showing JPopupMenu by JPopupMenu.show(invoker, x, y), and as x and y >>> i pass mouseEvent coordinates. But next when in action I obtain this [quoted text clipped - 9 lines] > No, problem is it does not work at all. I always get Point(0, 0), wherever > on the parent JPopupMenu appears. It is not correct, is it? Yes, it is. In the coordinate system of its parent, the JPopupMenu is at coordinates (0, 0), i.e. in the upper left corner. Christian > I am showing JPopupMenu by JPopupMenu.show(invoker, x, y), and as x and y i > pass mouseEvent coordinates. But next when in action I obtain this > JPopupMenu and call JPopupMenu.getLocation() I receive Point(0, 0). This has been reported as bug 4527633 (see http://developer.java.sun.com/developer/bugParade/bugs/4527633.html). > Anybody knows how to obtain correct location of JPopupMenu? If you use JPopupMenu.show(Component,int,int) to pop up the menu you can use the requested popup location instead. I use a general mouse listener that stores this point in a client property on the popup menu just before it calls show, but you can of course store the point in any way you like. Note that the requested popup point is not the same as the location of the menu, as the actual popup position is adjusted when you get close to the component bounds. For my application I actually need the point where the user clicked and not the location of the menu, so this is better. If you really need the location of the menu there might be another work-around, but I am not aware of it. Regards,  SignatureFilip Larsen Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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