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. creating signals with button slots
Forum Updated to NodeBB v4.3 + New Features

creating signals with button slots

Scheduled Pinned Locked Moved Solved General and Desktop
6 Posts 3 Posters 525 Views 2 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.
  • S Offline
    S Offline
    shravan_121
    wrote on last edited by
    #1

    I have a Button : Button *plus = createButton(tr("+"), SLOT(additiveOperatorClicked())); in which the additiveoperatorclicked is a function I have to create signal slot connection can it be made.

    1 Reply Last reply
    0
    • Chris KawaC Offline
      Chris KawaC Offline
      Chris Kawa
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Yes, but you'll need to add a pointer to the object that has the slot as additional parameter to the createButton function, because that's needed for the connect call.

      1 Reply Last reply
      1
      • S Offline
        S Offline
        shravan_121
        wrote on last edited by
        #3

        @Chris-Kawa can you please explain me how to do that because i am in the learning phase.

        Chris KawaC 1 Reply Last reply
        0
        • S Offline
          S Offline
          shravan_121
          wrote on last edited by
          #4

          can you please explain me how to do that because i am in the learning phase.

          Pl45m4P 1 Reply Last reply
          0
          • S shravan_121

            can you please explain me how to do that because i am in the learning phase.

            Pl45m4P Online
            Pl45m4P Online
            Pl45m4
            wrote on last edited by
            #5

            @shravan_121

            If you want to connect your plus button to your additiveOperatorClicked function:

            connect(plus, SIGNAL(clicked()), this, SLOT(additiveOperatorClicked()));
            
            

            If debugging is the process of removing software bugs, then programming must be the process of putting them in.

            ~E. W. Dijkstra

            1 Reply Last reply
            4
            • S shravan_121

              @Chris-Kawa can you please explain me how to do that because i am in the learning phase.

              Chris KawaC Offline
              Chris KawaC Offline
              Chris Kawa
              Lifetime Qt Champion
              wrote on last edited by
              #6

              @shravan_121 Well, assuming your Button class has a clicked() signal you can do something like this:

              Button* createButton(const QString& text, QObject* obj, const char* slot)
              {
                  Button* button = new Button(text);
                  QObject::connect(button, SIGNAL(clicked()), obj, slot);
                  return button;
              }
              

              and assuming you have some_object that has a additiveOperatorClicked() slot you can use it like this:

              Button* plus = createButton("+", some_object, SLOT(additiveOperatorClicked()));
              
              1 Reply Last reply
              5

              • Login

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