Why do I get two clicked or released signals when using a custom slot for a QPushButton ?
- by Chris
here's the main code at first I thought is was the message box but setting a label instead has the same effect.
#include <time.h>
#include "ui_mainwindow.h"
#include <QMessageBox>
class MainWindow : public QWidget, private Ui::MainWindow {
Q_OBJECT
public:
MainWindow(QWidget *parent = 0);
void makeSum(void);
private:
int r1;
int r2;
private slots:
void on_pushButton_released(void);
};
MainWindow::MainWindow(QWidget *parent) : QWidget(parent) {
setupUi(this);
}
void MainWindow::on_pushButton_released(void) {
bool ok;
int a = lineEdit->text().toInt(&ok, 10);
if (ok) {
if (r1+r2==a) {
QMessageBox::information( this, "Sums","Correct!" );
} else {
QMessageBox::information( this, "Sums","Wrong!" );
}
} else {
QMessageBox::information( this, "Sums","You need to enter a number" );
}
makeSum();
}
void MainWindow::makeSum(void) {
r1 = rand() % 10 + 1;
r2 = rand() % 10 + 1;
label->setText(QString::number(r1));
label_3->setText(QString::number(r2));
}
int main(int argc, char *argv[]) {
srand ( time(NULL) );
QApplication app(argc, argv);
MainWindow mw;
mw.makeSum();
mw.show();
return app.exec();
}
#include "main.moc"
