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    • SOLVED Use of QSpinBox::blockSignals. How to avoid infinite loop with valueChanged.
      General and Desktop • qspinbox emit signal blocksignal infinite loop • • Petross404_Petros S  

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      Doing so ensure the proper behaviour. If you connect anything that doesn't do it, you'll still avoid the signal storm.
    • UNSOLVED How to emit a signal in whole of project?
      Mobile and Embedded • qsocketnotifier emit signal • • MhM93  

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      Thanks for all. I should test it , if it works I will put the code completely here.
    • UNSOLVED OpenCV & QT: 'emit' undeclared identifier error
      General and Desktop • qt5 opencv emit signal • • htmlboss  

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      Hi, Just a quick note, taking a look at fixing this "fix", I just saw that the latest version of the contrib repository doesn't contain the offending code anymore.
    • SOLVED How to connect signal and slot in two diffrent form ?
      Mobile and Embedded • emit signal • • MhM93  

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      It solved. I have a silly mistake. I call slot when my form is null and does not create. In that example in stackoverflow both form create and they connect the signal and slot . but my second form is null.