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Thread: QPushButton Checked Change

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    Default QPushButton Checked Change

    Hi there,

    I'm using QPushButton like a checkbox , so is there any event about Checked state changed in QPushButton thanks for your help.

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    Default Re: QPushButton Checked Change

    QPushButton::ischecked() function

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    Default Re: QPushButton Checked Change

    isChecked() returns checked state of QPushButton. I wanna catch event everytime changed state of qpushbutton like checkboxs stateChanged(int ) event. thanks ...

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    Default Re: QPushButton Checked Change

    Hm... was looking through documentation found something called QWidget::changeEvent...

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    Default Re: QPushButton Checked Change

    thx Archa4 but it's not for checked stateChanged ...

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    Default Re: QPushButton Checked Change


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    Default Re: QPushButton Checked Change

    Thanks Rhayader , I just override void QAbstractButton::toggled ( bool checked ) [signal] but it doesn't work, btw my buttons in QButtonGroup , but as document said it works in QButtonGroup but doesn't work as i said ...

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    Default Re: QPushButton Checked Change

    You don't need to override the signal. It's a signal. Connect it to a Slot.

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    Default Re: QPushButton Checked Change

    http://www.qtcentre.org/faq.php?faq=qt_signalslot........... I think this will help you

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    Default Re: QPushButton Checked Change

    i need to override for check something then i emit signal. samething actually (;, still doesn't work btw ...

    edit : I typed mistakely slot there ! so this is my mistake many people confused then
    Last edited by nightroad; 21st March 2011 at 10:05.

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    Default Re: QPushButton Checked Change

    You don't emit a slot.

    Connect the toggled signal to a slot and then check what you have to check ?

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    Default Re: QPushButton Checked Change

    Then include your codes in the another function and call Q_Emit, it will trigger it

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    Default Re: QPushButton Checked Change

    Qt Code:
    1. class HSPushButton : public QPushButton
    2. {
    3. Q_OBJECT
    4.  
    5. public:
    6. HSPushButton(QWidget *parent = 0);
    7. ~HSPushButton();
    8.  
    9. ...
    10.  
    11. private:
    12.  
    13. ...
    14.  
    15. signals:
    16. ...
    17. void stateChanged(bool state);
    18.  
    19. protected:
    20. virtual void toggled(bool checked);
    21. ...
    22. };
    23.  
    24. HSPushButton.cpp
    25.  
    26. void HSPushButton::toggled(bool checked)
    27. {
    28. emit (stateChanged(checked));
    29. }
    To copy to clipboard, switch view to plain text mode 

    so is it wrong ? I don't think so cuz i'm using escapePressed on my buttons with same method ...

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    Default Re: QPushButton Checked Change

    I don't get what is your goal with your HSPushButton class. Can you give us more detail ?

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    Default Re: QPushButton Checked Change

    Yes, it is wrong. toggled() as already noted is a signal not a slot. You can't have two functions (a signal and a slot) with the same signature.
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


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    Default Re: QPushButton Checked Change

    Guyz anyway thanks for your help , i'm gonna make it with my own way =) . If i use toggled directly i have to check many thing for each buttons own event so that is crapy ... anyway Thanks all ...

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    Default Re: QPushButton Checked Change

    I might be wrong but don't you just want to see which button has been clicked in QButtonGroup?
    And does not the signal buttonClicked( int id ) work for you? You can use that on the group rather than individual buttons...

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    Default Re: QPushButton Checked Change

    I'd rather say your approach makes it crappy. We don't know what you are doing but you're certainly having an incorrect approach. If you tell us what is the ultimate goal you wish to achieve maybe we'll be able to suggest a better solution.
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


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    Default Re: QPushButton Checked Change

    @ wysota i typed something wrong
    Quote Originally Posted by nightroad View Post
    i need to override for check something then i emit signal. samething actually (;, still doesn't work btw ...

    edit : I typed mistakely slot there ! so this is my mistake many people confused then

  20. #20
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    Default Re: QPushButton Checked Change

    Just please tell us what you want the HSPushButton class to do what QPushButton doesn't already do.
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


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