Run the initialization everytime you start a dialog

Sucharek

Hi, so the title might sound confusing, but here's what I'm trying to figure out.
So every time you start a Qt application, it has an initialization.
Like this (this one's a dialog):

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

But there's a problem with that.
It only does it once (on application start), and that's a problem for me.
So, is there a way, when I call a dialog to start, to execute something like this ALL the time?

JonB

@Sucharek
This initialization happens each time a fresh instance of a Dialog is created, rather than at application start time.

If you want a freshly initialized instance create one with Dialog *dialog = new Dialog; or Dialog dialog; as appropriate, instead of keeping the old instance you had around.

Sucharek

Hi @JonB, ok, but can I do this with an already existing dialog (like a class)?

mpergand

@Sucharek said in Run the initialization everytime you start a dialog:

Hi @JonB, ok, but can I do this with an already existing dialog (like a class)?

Hi,

It's vague, please explain what you want to do with a real use case.

Sucharek

@mpergand, I want to execute a command, when the dialog gets executed.
For more explanation, I'm executing a Qt designer form class. I make a dialog design, give it some functions, but everytime it gets executed, I need to update some variables, ui elements, etc., and I wanna do that everytime I execute it (everytime I do: dialog.exec())

JonB

@Sucharek
So put your extra initialization code after the ui->setupUi(this);, or in a method you write and call.

mpergand

@Sucharek
Hum, not sure to understand you correctly ...

If you want to excute something after the dialog is showed, implement a method in that dialog and call it each time you need it.

Sucharek

@JonB yes, I put extra initialization code after the ui->setupUi(this);
@mpergand you said: implement a method and call it each time you need it. Yes, everytime I call it (or open it)

mpergand

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

initialyze();
}

Dialog::initialyze()
{
// initialyzing stuff here
}

// somewhere in your prog
myDialog->initialyze();

JonB

@Sucharek
Depending on whether you create a new QDialog each time you show it or you keep one around and re-use it, either

Put what you want extra after ui->setupUi(this); in Dialog::Dialog().

Or do something like:

Dialog::doSomeStuffToTheUi()
{
    ui->doSomething();
}

// Outside world caller
dialog.doSomeStuffToTheUi();
dialog.exec();

If that does not do what you want, you are either doing something wrong or you are not explaining what this fails to achieve.

Sucharek

Hi, so @mpergand and @JonB, it works perfectly.
Thank you both for helping me :)