Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. difference between setFocus() and setFocusPolicy()
Forum Updated to NodeBB v4.3 + New Features

difference between setFocus() and setFocusPolicy()

Scheduled Pinned Locked Moved Solved General and Desktop
setfocus
8 Posts 2 Posters 8.1k Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • P Offline
    P Offline
    Pogi
    wrote on 19 Nov 2015, 11:57 last edited by
    #1

    can someone tell me the difference?

    1 Reply Last reply
    0
    • S Offline
      S Offline
      SGaist
      Lifetime Qt Champion
      wrote on 19 Nov 2015, 12:07 last edited by
      #2

      Hi,

      setFocus to set the keyboard focus on the widget, setFocusPolicy to tell how the widget should accept keyboard focus.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

      P 1 Reply Last reply 19 Nov 2015, 12:18
      0
      • S SGaist
        19 Nov 2015, 12:07

        Hi,

        setFocus to set the keyboard focus on the widget, setFocusPolicy to tell how the widget should accept keyboard focus.

        P Offline
        P Offline
        Pogi
        wrote on 19 Nov 2015, 12:18 last edited by Pogi
        #3

        @SGaist
        i see thanks.

        i have a problem:
        i have a class that inherits QTextEdit called ChatBox, i promoted QTextEdit object to ChatBox
        on the ChatBox constructor i called this function:

        setFocusPolicy(Qt::FocusPolicy::ClickFocus);
        

        heres the reimplemntation of keyPressEvent
        void ChatBox::keyPressEvent(QKeyEvent *event)
        {
        if (event->key() == Qt::Key_Return)
        {
        qDebug() << "enter";
        }
        else
        {
        qDebug() << "notenter"
        QTextEdit::keyPressEvent(event);
        }
        }

        when i pressed enter, theres only a time that if statement will be executed.
        sometimes when i press enter, the else statemet is executed i dont know why.
        sometimes i need to click again on the widget to make it work, and etc.

        if i pressed enter it should and should only execute the if statement.
        im lost now :(

        1 Reply Last reply
        0
        • S Offline
          S Offline
          SGaist
          Lifetime Qt Champion
          wrote on 19 Nov 2015, 12:25 last edited by
          #4

          Why are you calling keyPressEvent in keyReleaseEvent ?

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

          P 3 Replies Last reply 19 Nov 2015, 12:27
          1
          • S SGaist
            19 Nov 2015, 12:25

            Why are you calling keyPressEvent in keyReleaseEvent ?

            P Offline
            P Offline
            Pogi
            wrote on 19 Nov 2015, 12:27 last edited by Pogi
            #5

            @SGaist i already edited it
            i pasted the wrong code sorry, i was trying keyReleaseEvent.

            1 Reply Last reply
            0
            • S SGaist
              19 Nov 2015, 12:25

              Why are you calling keyPressEvent in keyReleaseEvent ?

              P Offline
              P Offline
              Pogi
              wrote on 19 Nov 2015, 13:09 last edited by
              #6

              @SGaist update: I tried keyReleaseEvent() still the same

              1 Reply Last reply
              0
              • S SGaist
                19 Nov 2015, 12:25

                Why are you calling keyPressEvent in keyReleaseEvent ?

                P Offline
                P Offline
                Pogi
                wrote on 19 Nov 2015, 18:10 last edited by
                #7

                @SGaist its fixed. i was pressing the enter key of numpad all this time lmao.
                thanks :)

                i found it when i found that Qt::Key_Return = 16777220
                and event->key() is returning 16777220 which is Qt::Qt::Key_Enter (Enter of numpad)

                1 Reply Last reply
                0
                • S Offline
                  S Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on 19 Nov 2015, 20:43 last edited by
                  #8

                  You're welcome !

                  Don't forget to either accept or ignore the event when you don't call the base class implementation of keyPressEvent.

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                  1 Reply Last reply
                  0

                  1/8

                  19 Nov 2015, 11:57

                  • Login

                  • Login or register to search.
                  1 out of 8
                  • First post
                    1/8
                    Last post
                  0
                  • Categories
                  • Recent
                  • Tags
                  • Popular
                  • Users
                  • Groups
                  • Search
                  • Get Qt Extensions
                  • Unsolved