Version: (using Devel) Installed from: Compiled sources In Dolphin and in other KDE applications (Konqueror, Kcalc) when I use the program menu with keyboard (in Dolphin e.g. Alt + V -> View) than I have some options I can choose. Upon them are some options which I enable/disable. In Dolphin in View there are "Preview" and "Show hidden Files" options. The only way to select them is to press Enter. After this the options is selected/deselected depending on the previous state, but the menu disappears. So in my case to select both "Preview" and "Show hidden Files" options I have to go through "Alt+V" arrow keys down until the option twice. My idea is to use space-bar to select options as those mentioned before. It is the significant improvement as I don't have to open the menu twice. Instead of this I select the option with space-bar and go to the next option.
That behavior is inherited from Qt afaik. I'm not sure if it can be changed in kde...
Technically this is possible, simply install an event filter on the menu bar and then check for spacebar presses on such items and if so trigger the action as if enter was pressed. That said I'm not sure this is solveable easily on the kdelibs level, it might need adjustment in each application. Of course a Qt implementation would make all this a lot easier, so I suggest to file a feature request with Qt Software.
http://bugreports.qt.nokia.com/browse/QTBUG-6635
*** Bug 221953 has been marked as a duplicate of this bug. ***
*** Bug 293932 has been marked as a duplicate of this bug. ***
The same behaviour applies to clicking on checkboxes in menus which closes them although multiple selections are possible.