Get widget from QTabWidget
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Hi,
I have created a "SectionsManager" class that publicly inherits from QTabWidget. I created a object of this class and a new tab:
Section *section = new Section();
addTab(section, section->getSectionName());"section" is an object of the Section class which inherits publicly from the Widget class. In the further part of the code I would like to get from the given tab about the index and extract the widget that I placed there earlier
Section *section = ui->sectionManager->widget(index);
however, it gets an error during compilation:
"invalid conversion from 'QWidget' to 'Section'What could I do to fix it and be able to get from the given index of the tab the ptr of the object which I previously placed there
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@Bonnie I did as you said and actually the code is compiling. However, I have a problem when I try use the methods of this object's class. The application is crashed.
QString name = section->getSectionName();
Do you know what could be the reason?
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Probably because section equals nullptr.
You should add some protection when you use the cast so that it won't crash.if(Section *section = qobject_cast<Section*>(ui->sectionManager->widget(index))) { QString name = section->getSectionName(); }Are you sure the result of ui->sectionManager->widget(index) is a Section?
If section equals nullptr, that means it isn't.
BTW, you can get the tab name byQString QTabWidget::tabText(int index) const -
Probably because section equals nullptr.
You should add some protection when you use the cast so that it won't crash.if(Section *section = qobject_cast<Section*>(ui->sectionManager->widget(index))) { QString name = section->getSectionName(); }Are you sure the result of ui->sectionManager->widget(index) is a Section?
If section equals nullptr, that means it isn't.
BTW, you can get the tab name byQString QTabWidget::tabText(int index) const@Bonnie It's works, thanks