Deskbar menu of input method icon works only once

[hanya]

If customu input menu has own submenu at deskbar icon, the menu works only once.

If the submenu is shown once, the submenu is no longer work even any item is choosen until set the menu again by SetMenu method.

[hanya]

Test input method

[hanya]

The attached method.cpp contains test input method provides submenu on the deskbar icon. This can be build like: g++ -o im_test method.cpp -lbe /boot/system/servers/input_server

The submenu contains the following entries:

• Alert 1: shows alert. The menu is unuseful after you choose this item.
• Alert 2: shows alert and set menu again. You can choose other item because of the new menu is set.

[waddlesplash]

Setting component to Deskbar for now, but this might be an Interface Kit bug. (Either way, could you take a look at this, jscipione?)

[hanya]

The same problem happen on submenus in some custom code. I needed to call SetTargetForItems on each submenus to avoid this problem.