QPushButton is not clicked on the first click

Question

I have Qt 5.6 and I'm using the pressed signal of a button witch then shows a dialog. unfortunately the button of dialog is not clicked in the first time but the second click is working perfectly. you can test this situation by showing a QMessageBox::information in a on_someButton_pressed slot.

Answer 1

Sorry, can't reproduce: works for me. And you should have written this test case. It's almost less words to code it up than to describe the problem.

#include <QtWidgets>
int main(int argc, char ** argv) {
   QApplication app{argc, argv};
   QPushButton button{"Press me"};
   button.setMinimumSize(300, 150);
   button.setFont(QFont{"Helvetica", 20});
   QObject::connect(&button, &QPushButton::pressed, [&]{
       QMessageBox::information(&button, "Yes!", "You pressed me.");
   });
   button.show();
   app.exec();
}

As an aside, you should be using the clicked() signal, not the pressed() signal. Usability suffers if you use the latter.