Need help with button !

[wreckx]

Hi everyone,

after get a lots of help from expert im still stuck with my button..

i have 2 "design" page (form.ui) "Qdialog"

mainwindow.ui

and

dialog.ui


i have one button on mainwindow.ui and i want to click that button to go to dialog.ui..

i design only with the designer thing with a double click on mainwindow.ui or dialog.ui

can someone please write me that simple step for me ?? i really can't figure out how and where to write codes - -" ... as you will see i put some script already (from the help i had in my last post) the debug mode works fine but when i press the button my program crash ?!!

i guess something wrong with my code still or im not doing the step right..

thank you very much

Max




here are the code from each pages:

Dialog.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Dialog</class>
<widget class="QDialog" name="Dialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle">
<string>Dialog</string>
</property>
<widget class="QCalendarWidget" name="calendarWidget">
<property name="geometry">
<rect>
<x>80</x>
<y>40</y>
<width>256</width>
<height>155</height>
</rect>
</property>
</widget>
</widget>
<resources/>
<connections/>
</ui>

mainwindow.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>360</width>
<height>640</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralWidget">
<widget class="QPushButton" name="pushButton">
<property name="geometry">
<rect>
<x>120</x>
<y>180</y>
<width>121</width>
<height>23</height>
</rect>
</property>
<property name="text">
<string>PushButton</string>
</property>
</widget>
</widget>
</widget>
<layoutdefault spacing="6" margin="11"/>
<resources/>
<connections/>
</ui>

dialog.h

#ifndef DIALOG_H
#define DIALOG_H

#include <QDialog>

namespace Ui {
class Dialog;
}

class Dialog : public QDialog
{
Q_OBJECT

public:
explicit Dialog(QWidget *parent = 0);
~Dialog();

private:
Ui::Dialog *ui;
};

#endif // DIALOG_H

mainwindow.h


#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtGui/QMainWindow>
#include <QDialog>
#include "dialog.h"

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{

QDialog *dialog;
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();

private:
Ui::MainWindow *ui;

private slots:
void on_pushButton_clicked();
};

#endif // MAINWINDOW_H

dialog.ccp


#include "dialog.h"
#include "ui_dialog.h"

Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
}

Dialog::~Dialog()
{
delete ui;
}

main.cpp


#include <QtGui/QApplication>
#include "mainwindow.h"

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;

#if defined(Q_WS_S60)
w.showMaximized();
#else
w.showFullScreen();

#endif
return a.exec();
}

mainwindow.cpp


#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "ui_dialog.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}

MainWindow::~MainWindow()
{
delete ui;
}

void MainWindow::on_pushButton_clicked()
{
dialog->exec();
}

[Zlatomir]

You have only the pointer there, create an object, using new if you use a pointer, or you can create one dialog on the stack if you use .exec() to make it modal.

Take a look at this FAQ

LE: also check the classes names, because you created your own Dialog class and you created a pointer to QDialog class in the mainwindow.