JComboBox - selection down arrow not appearing
Hi All,
I am writing a swing application which uses a JComboBox with a Vector<String> as it's constructor arguments. This JComboBox is then added to a JPanel derived class which is in turn added to a JFrame. The JComboBox works fine but the selection down arrow does not appear for some reason.
So I built a quick test application (in a similar fashion) and the JComboBox also works fine but this time the selection down arrow does appear.
I can't figure out what I'm doing different. Can anyone tell me the circumstances under which the down arrow will / will not appear in a JComboBox?
Thanks,
Dougall
Hi,
The reason I had used this approach is that sometime I wish the content pane to hold a JPanel type component (only) and sometimes a JTable type (only). I had (foolishly perhaps) assumed that this would not be possible with a standard layout manager.
As es5f2000 suggests I shall investigate a CardLayout manager.
If this does not succeed I shall keep the present system which currently works fine (maybe performance issues?). The bounds and size of the parent container are both work fine so long as I remember to call .validate() on the new component being added to the JFrame.
The JFrame itself is specifically set to be a fixed non-resizable size, surely this is a case in which although not recommended, it's ok to use absolute positioning?
Thanks again,
Dougall
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