How do I modify object / class ?

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1.00/5 (1 vote)

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Asking for simple advise

I am rebuilding my C++ code.
Currently I have QtCreator build default class.
The class processes "system call" using library.

I like to rebuild the class passing either option #
or actual text of the system command.

What would be preferred?

I think passing a option # and let new, not default, constructor
to pic (switch ) the command...

The commands can be "string list" and the "switch" could get too convoluted...

What I have tried:

Pass option # - int ....

Here is the original default constructor

C++

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

#ifdef TRACE
...
#endif
    //..text = " Constructor...";
    // ui->textEdit->append(" Constructor...");
}

Actually
how do I pass an int option to the "new constructor"?

As of now this looks this way:

C++

// origninal default constructor
MainWindow_Bluewtoothctl_Dialog(QWidget *parent = nullptr);

Posted 5-Jan-24 12:16pm

Salvatore Terress

Updated 5-Jan-24 22:32pm

KarstenK

v2

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Richard MacCutchan · Answer 1 · 2024-01-05T22:54:00

You cannot add parameters without defaults after a parameter that does have a default. So the folowing:

C++

// illegal as command has no default
MainWindow_Bluewtoothctl_Dialog(QWidget *parent = nullptr, QTstring command)

// needs to be ...
MainWindow_Bluewtoothctl_Dialog(QWidget *parent, QTstring command)

// or
MainWindow_Bluewtoothctl_Dialog(QWidget *parent = nullptr, QTstring command = 'whatever a null QTstring is')

Salvatore Terress · Answer 2 · 2024-01-10T16:22:00

Solution 2

After few trials I opted to pass an index to the class / object.
I can add the necessary text using QStringList and foreach loop...
either to class or as part of configuration library.
Thanks

case closed

Posted 10-Jan-24 16:22pm

Salvatore Terress

Comments

RedDk 12-Jan-24 16:20pm

Ha! "Case Closed" ... That's what the Fourth Doctor thought :)