With that really simple code the app hangs when i click the button, but the examples included in QT works fine, and i don’t see differences. I’ve tryed using different widgets with and without layouts, tryed deriving from QFrame, using “QObject::connect” and “connect” alone, with and without Q_OBJECT macro, but still the same. The only way it works is with an empty slot function. I’ve tryed with normal SIGNALS and SLOTS and it works. I think it must be a really stupid thing, but i can’t see it.
This is the error when windows forces the exit of the program:
“Starting C:\Users\Administador\untitled1-build-desktop-Qt_4_8_1_for_Desktop_-_MinGW__Qt_SDK__Debug\debug\untitled1.exe…
The program has unexpectedly finished.
C:\Users\Administador\untitled1-build-desktop-Qt_4_8_1_for_Desktop_-_MinGW__Qt_SDK__Debug\debug\untitled1.exe exited with code -1073741819”
widget.h
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QPushButton>
class Widget : public QWidget
{
Q_OBJECT
public:
explicit Widget(QWidget *parent = 0);
private:
QPushButton *button;
signals:
public slots:
void slotprueba();
};
#endif // WIDGET_H
widget.cpp
#include "widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent)
{
QPushButton *button=new QPushButton("HOLA",this);
QObject::connect(button,SIGNAL(clicked()),this,SLOT(slotprueba()));
}
void Widget::slotprueba(){
button->setText("Pulsado");
}
main.cpp
#include <QtGui/QApplication>
#include "widget.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget wid;
wid.show();
return a.exec();
}
↧