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[Solved]Size of pushbuttons

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  • C Offline
    C Offline
    Chuck Gao
    wrote on last edited by
    #11

    I'm sorry alfah, i can not understand your English clearlly. But, the size() function will return the widget's size(as we know QSize), as Eddy mentioned before, i think you need know some concept of geometry/bounding-rect.

    [quote author="alfah" date="1311752432"]could u tell me how to go about it to find the size of any one of the pushbuttons?[/quote]

    what do you mean alfah ? Can you give us a more detailed description ?

    Chuck

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    • C Offline
      C Offline
      Chuck Gao
      wrote on last edited by
      #12

      ok, you solve it. Good luck :D

      Chuck

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      • A Offline
        A Offline
        alfah
        wrote on last edited by
        #13

        Hey everybody,

        im sorry to restart this thread, but the following code gives me values 480 and 640
        @
        cellBut[i][j]=new QPushButton();
        connect(cellBut[i][j],SIGNAL(clicked()),this,SLOT(onClickAction()));
        ht=cellBut[0][0]->size().height();
        wd=cellBut[0][0]->size().width();
        @

        by no means this is the size of the buttons, think its the screen size!!!!

        I need pushbutton ht and width

        Thank you

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        • EddyE Offline
          EddyE Offline
          Eddy
          wrote on last edited by
          #14

          did you use an iteration like :
          @for(i = 0, i < max , ++i){
          for(j=0, j<max, ++j){
          //do your stuff
          }
          }@

          Qt Certified Specialist
          www.edalsolutions.be

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          • A Offline
            A Offline
            alfah
            wrote on last edited by
            #15

            eddy,

            Yup i did,
            @
            for(int i=0;i<6;i++)
            {
            for(int j=0;j<7;j++)
            {

                   cellBut[i][j]=new QPushButton();
                   connect(cellBut[i][j],SIGNAL(clicked()),this,SLOT(onClickAction()));
                   ht=cellBut[i][j]->size().height();
                   wd=cellBut[i][j]->size().width();
            
                }
            }
            

            @

            ht and wd gives me 640 and 480 respectivvely. which i think is the screen size and not individual button size.
            :(

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            • C Offline
              C Offline
              Chuck Gao
              wrote on last edited by
              #16

              I think the problem is, you didn't set the pushbutton's size implicit. And you didn't use any layout management. So the value is not you want.

              Chuck

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              • EddyE Offline
                EddyE Offline
                Eddy
                wrote on last edited by
                #17

                what Chuck is saying is that you didn't use a parent or add them to a layout. That way they get a size.

                have a look at this quick and dirty example:

                @ int rows = 6;//this is convenient in case you want to alter the numbers
                int cols = 7;
                QPushButton* cellBut[rows][cols] ;

                for(int i=0;i<rows;i++) {
                    for(int j=0;j<cols;j++)     {
                        cellBut[i][j]=new QPushButton(this);    //remark the use of a parent here
                        //        connect(cellBut[i][j],SIGNAL(clicked()),this,SLOT(onClickAction()));//better way see below
                
                    }
                }
                qDebug() << cellBut[0][0]->size().height();
                qDebug() << cellBut[0][0]->size().width();@
                

                you might have a look at "QSignalMapper":http://doc.qt.nokia.com/4.7/qsignalmapper.html#details. There is a nice example of what you try to achieve.

                Qt Certified Specialist
                www.edalsolutions.be

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                • A Offline
                  A Offline
                  alfah
                  wrote on last edited by
                  #18

                  chuck,

                  Yea, I have not set size of the pushbutton, But since it has been created, why doesn it give me the current size of the button. That it should do right?

                  :( Is it necessary to specify the size of the button while creating them?

                  Thank you

                  alfah

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                  • EddyE Offline
                    EddyE Offline
                    Eddy
                    wrote on last edited by
                    #19

                    in case you missed my topic :
                    have a look at my example. also the QSignalMapper link.

                    Qt Certified Specialist
                    www.edalsolutions.be

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                    • A Offline
                      A Offline
                      alfah
                      wrote on last edited by
                      #20

                      :) Thanks Eddy,

                      Got tht one, size now is 100 and 30 which is kinda resonable :)

                      alfah

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                      • EddyE Offline
                        EddyE Offline
                        Eddy
                        wrote on last edited by
                        #21

                        You're welcome. I'm glad you made it.

                        And did you have a look at the QSignalMapper example?
                        This will make your signal slots handling much easier.

                        Qt Certified Specialist
                        www.edalsolutions.be

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                        • A Offline
                          A Offline
                          alfah
                          wrote on last edited by
                          #22

                          :)

                          I checked that, :) its a lot more easier.

                          Thank you :) :)

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                          • C Offline
                            C Offline
                            Chuck Gao
                            wrote on last edited by
                            #23

                            Anyway, Enjoy Qt alfah :D

                            Chuck

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                            • A Offline
                              A Offline
                              alfah
                              wrote on last edited by
                              #24

                              chuck,

                              :) well, im a beginner in Qt, so far it hasn been an enjoyment :),
                              gradually i hope i will love bugs:D

                              :)

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