20.07.2012, 17:43, "pritam.ghang...@gmail.com" <pritam.ghang...@gmail.com>: > On Fri, Jul 20, 2012 at 7:00 PM, Konstantin Tokarev <annu...@yandex.ru> wrote: >> 20.07.2012, 17:23, "pritam.ghang...@gmail.com" <pritam.ghang...@gmail.com>: >>> Hi All,I was looking at qt code to understand "how focus management code in >>> qt works in case of keyboard/remote devices". >>> I have some loose ends here. I am hoping someone with more exposure to >>> these areas can help me out. >>> 1. I couldn't figure out how qt is able to move focus between buttons in a >>> widget with left/right. I didn't see any code doing that. There was >>> code in qwidget.cpp that handles tab/backtab but no right/left. >>> 2. When I enabled directional navigation with QT_KEYPAD_NAVIGATION, it >>> screwed up all default focus handling my QTableView. >>> Any link to some write up about these areas of qt or guidelines about focus >>> handling in pointer less devices will be extremely helpful. >> >> We write keyPressEvent handlers for our widgets (or event filters) and use >> QWidget::setFocus(). > we have been doing same but this distributed handling is turning out to be > error prone. If some robust mechanism is possible, I would like to take > advantage of that. Even if its partial. Moreover we have had bugs sometimes > when we lost focus with no one having focus. Mostly easy to fix just by > looking at new code. > But recently I had a issue where i am not able to figure out how I lost > focus. The target widget gets focus momentarily but then looses focus. There > doesn't seem to be any code in our application that may do that. I tried > intercepting all focus in and focus out events at application level to see > what is happening. No success as yet. The widget that looses focus is a > button inside my own custom dialog. I thought lets have a deeper > understanding of "how qt works in this area before deciding something"
Connect your slot to QApplication::focusChanged() and set breakpoint in it. -- Regards, Konstantin _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
