I hide the MainWindow by hide() function but i want to raise that window after pressing any key. is there any method how its is possible please share the code if you know and views...
You can create a windows wide system hook, but they also have disadvantages. And raising an app works but it will not get the input focus, if it does not have it already. No app is allowed to pull the focus, only pushing is allowed.
There must be some way, as uTorrent has that feature for example (boss key, if it was previously in focus), but I do not know of any such feature in Qt.