The usage of lightweight popups is allowed only for the JToolTip and JPopupMenu classes. For all the other classes the mediumweight popup is used. This is hardcoded into the PopupFactory.getPopup(Component, Component, int, int) method.
User might want to use lightweight popups to create transparent inner popups or for other purposes.

Here is the code that is used to determine popup type:

        else if (popupType == LIGHT_WEIGHT_POPUP &&
                 !(contents instanceof JToolTip) &&
                 !(contents instanceof JPopupMenu)) {
            popupType = MEDIUM_WEIGHT_POPUP;
        }

This code should be changed.
###@###.### 10/14/04 14:38 GMT
###@###.### 10/14/04 15:22 GMT