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qtqt4keyboard-shortcuts
Pakewak
Pakewak

Reputation: 11

Qt4: How to detect when a QAction shortcut key is released

I want to display something on the screen as long as a certain key combination is pressed (using Qt4.x). It has to be an configurable application-wide shortcut, so I'd like to do this with a QAction with an attached shortcut. The problem is that there seems to be no way to detect when the user releases the shortcut. I tried with a one-shot timer, in combination with the auto-repeat option, but this is unreliable and there is a delay before the hide-method is called.

Upvotes: 1

Views: 1723

Answers (2)

Jérôme
Jérôme

Reputation: 27027

Using the shortcut mechanism provided by Qt, you can only react to the key combination being activated.

Why do you need to detec the key release ? If you need it, maybe you'll have to do reimplement the keyPressEvent and keyReleaseEvent functions, but before that, I would think twice if detecting the key release is really needed.

Upvotes: 4

ismail
ismail

Reputation: 47572

If you want to have a keyboard shortcut you should use QShortcut instead.

Upvotes: 0

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