CODEWITHSUNDEEP
c++qt
Langleson
Langleson

Reputation: 103

Is it possible to access variable UI members with name?

I have a QWidget which I have attached to the toolbar of a QMainWindow. I would like to change the color of the pushbutton text when the buttons are activated. I realize that I could create a method for each pushbutton (example below), but I am wondering if I could create one method that uses the name of the desired pushbutton (pseudocode below).

Change Specific pushbutton:

void ToolBarClass::changeOKbutton(QColor color)
{
    ui->pushbutton_ok->[however text color is changed](color);
}

Change variable pushbutton

void ToolBarClass::changePushButton(QString buttonName, QColor color)
{
    ui->[accessUImemberByName](buttonName)->[however text color is changed](color);
}

This is not a duplicate of this question because I am looking for Qt specific functionality to access ui members by name, which appears to be very different from the "duplicate" question.

Upvotes: 2

Views: 329

Answers (1)

hyun
hyun

Reputation: 2143

You can use QObject::objectName() function, like below, 

    void ToolBarClass::changePushButton(QString buttonName, QColor color)
    {
        QList< QPushButton* > listBtnAll = findChildren< QPushButton* >();
        for ( int i = 0; i < listBtnAll.size(); i++ )
        {
            if ( listBtnAll[ i ]->objectName() == buttonName )
            {
                listBtnAll[ i ]->[however text color is changed](color);
                break;
            }
        }
    }

As @Pie_Jesu's advice, I've changed code, like below,

    void ToolBarClass::changePushButton(QString buttonName, QColor color)
    {
        QPushButton *pButton = findChild<QPushButton *>( buttonName ); 
        if ( pButton )
        {
            pButton->[however text color is changed](color);
        }
    }

I think the cost of search time is same, however, the cost of typing is more efficient than old code.

Upvotes: 3

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