Error trying to add widgets to QTabWidget
c++, qt, qtabwidget
Solution
The problem isn't your tab, but the QString. `QTabWidget::addTab()` expects a const reference to a QString, but you're giving it a pointer to a QString. Try using the dereference operator (`*`), like this:
myTabWidget->addTab(firstTab, *labelTabOne);
myTabWidget->addTab(secondTab, *labelTabTwo);
Problem
I wanted to make a window and add a QTabWidgets with the widgets I want to it. So I followed the Qt TabDialog example and from what I know, I followed the same path as in the example. Problem is I get this error while trying to add my widgets as tabs: "/home/user/Programming/C++/QtTests/TabExample/TabExample-build-desktop-Desktop_Qt_4_8_1_for_GCC__Qt_SDK__Release/../TabExample/tabwidget.cpp:20: error: no matching function for call to 'QTabWidget::addTab(Tab_One*, QString*&)'". Why do I get this error because Tab_One is inherited from QWidget? Here is my main widget code: Header file: ``` #ifndef TABWIDGET_H #define TABWIDGET_H #include <QWidget> class QTabWidget; class Tab_One; class Tab_Two; class QString; class QHBoxLayout; class QDialog; class TabDialog : public QDialog { Tab_One *firstTab; Tab_Two *secondTab; QTabWidget *myTabWidget; QString *labelTabOne; QString *labelTabTwo; QHBoxLayout *layout; public: TabDialog(QWidget *parent = NULL); }; #endif // TABWIDGET_H ``` and source file: ``` #include <QWidget> #include <QDialog> #include <QTabWidget> #include <QHBoxLayout> #include <QString> #include "tabwidget.h" #include "tab1.h" #include "tab2.h" TabDialog::TabDialog(QWidget *parent) : QDialog(parent) { layout = new QHBoxLayout; labelTabOne = new QString("My First Tab"); labelTabTwo = new QString("My Second Tab"); myTabWidget = new QTabWidget; firstTab = new Tab_One; secondTab = new Tab_Two; myTabWidget->addTab(firstTab, labelTabOne); myTabWidget->addTab(secondTab, labelTabTwo); layout->addWidget(myTabWidget); setLayout(layout); } ``` and here is one of my widets(tab1): header: ``` #ifndef TAB1_H #define TAB1_H #include <QWidget> class QVBoxLayout; class QPushButton; class Tab_One : public QWidget { QPushButton *button_one; QPushButton *button_two; QVBoxLayout *layout; public: Tab_One(QWidget *parent = NULL); }; #endif // TAB1_H ``` and source: ``` #include <QWidget> #include <QDialog> #include <QTabWidget> #include <QHBoxLayout> #include <QString> #include "tabwidget.h" #include "tab1.h" #include "tab2.h" TabDialog::TabDialog(QWidget *parent) : QDialog(parent) { layout = new QHBoxLayout; labelTabOne = new QString("My First Tab"); labelTabTwo = new QString("My Second Tab"); myTabWidget = new QTabWidget; myTabWidget->addTab(new Tab_One(this), labelTabOne); myTabWidget->addTab(new Tab_Two(this), labelTabTwo); layout->addWidget(myTabWidget); setLayout(layout); } ``` Thank you very much and sorry for the long post