Buttons

[valy12]

Hello,

i have read few forum on it but i need your help for a little problem :

i want to put a button on my window,
i declared my button on the main with :
QPushButton *bouton = new QPushButton("Connecter",ui->pushButton);
bouton->setCheckable(true);

i would like to make an action named "connection" when i click on it. So i connect the button but i don't know what i should write instead of the "???"
connect(ui->pushButton,SIGNAL(clicked()),????,SLOT(connection ()));

should i create a new file to put my function into?

Thanks

[Lykurg]

first you have to declare connection() as a slot. second, it does not matter where (in which class) you declare that slot, just put a pointer to that class instead of ?????.
Most likely, you declare that slot in the widget you create your button, then use this for ???.

[borisbn]

1. Is it that you really wanted to put new buttun bouton INSIDE another button ui->pushButton ?
2. If you have a QAction, named connection, you should do

connect(ui->pushButton,SIGNAL(clicked
()),ui-> connection,SLOT(trigger()));

connect(ui->pushButton,SIGNAL(clicked
()),ui-> connection,SLOT(trigger()));

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[valy12]

thanks, but i still have a problem ^^

i declared my function connection as a slot like that in my header :
class MainWindow : public QMainWindow
{
Q_OBJECT
....
public slots :
void connection();
...
};

in the .cpp i write that :
QPushButton *bouton = new QPushButton("Connecter Wiimote",ui->pushButton);
bouton->setCheckable(true);
QObject::connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(connection ()));

my function connection is :
void MainWindow::connection()
{
...
}

There is no errors at the compilation.
However when i cllick on the button, the code in my function connection is not executed... what's wrong?

[Chexov]

emmm)
Write this and all will earn:

QObject:: connect (bouton, SIGNAL (clicked(), this, SLOT (connection ()));

QObject:: connect (bouton, SIGNAL (clicked(), this, SLOT (connection ()));

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[valy12]

cool! i'm a joke... ^^
Thanks

[Lykurg]

if you use ui you don't have to create a new button. ui->pushButton is already a full button, so there is no need to recreate one. Simply use your

QObject::connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(connection()));

QObject::connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(connection()));

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and skip all the

QPushButton *bouton = new QPushButton("Connecter Wiimote",ui->pushButton);
bouton->setCheckable(true);

QPushButton *bouton = new QPushButton("Connecter Wiimote",ui->pushButton);
bouton->setCheckable(true);

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things...

Lykurg

[Chexov]

Lykurg you are right, but its way is amusing and works)
valy12 when you add object in gui redactor, it is not obligatory to describe again the button in a code, the nobility its objective name suffices and to address to it it is possible through the index ui)
Sorry for my english,i am from Russia)

[valy12]

You 're right it's better!
i use c++ and qt since one week so forgive me

Thanks all