Question

I’m using Qt with Visual Studio 2010 but I have a doubt.
Whenever I use the Qt Designer to create a GUI, when compiling in Visual I have no access to the Objects auto created by the designer, like the buttons, listboxes etc…
What should I do in order to use them ?

My point is, I can’t create events, slots, signals, etc, cause it seems this objects do not exist in my main.cpp and my mainclass.cpp.

Thanks guys !

I’m using VS 2010 with QT 4.8.0.

#include <QListWidget.h>
#include <stdio.h>
#include <string.h>
#include "ui_ratagbc.h"

class dasm: QObject
{
    Q_OBJECT
public:
    dasm(void);
    ~dasm(void);
    int DAsm(FILE *,int);
private:
    Ui::RataGBCClass *ui;
};

Answer 1

To access the GUI in your code, include the result from running the uic tool. Create a class, and have as a member variable an instance of the class that uic generated, it is in the Ui namespace.

#include "ui_MyGUI.h" //automatically generated by uic tool

class MyClass : public QDialog //or whatever type of GUI you made
    {
    Q_OBJECT //this macro flags your class for the moc tool
    //other variables and functions
    Ui::MyGUI ui;
    };

You get access through this ‘ui’ object:
ui.label->setText("New label text set in source file");

In your constructor, call ui.setupUi(this)

Note the Q_OBJECT macro – if you’re defining signals and slots or stuff like that, you need the Q_OBJECT there to flag the class for the moc tool to recognize it.

Edit to answer followup question in comments:
It sounds like what you want to do is use the signal/slot system. In your class definition, include the following:

class MyClass
{
//other stuff
public slots:
void customSlot(){/* your actions here */}
//other stuff
};

Then someplace else, commonly in the constructor or an initialization function, inclue this line:

connect(ui.button, SIGNAL(clicked()), this, SLOT(customSlot()));

The moc tool handles the bulk of the setup. Your custom slot will then be triggered when the button is clicked.