Hiding the TabWidget

amarism

Hi,

I am using QtCreator and have implemented a QTabWidget on my MainWindow. With the designer, I have 2 tabs that all include ListWidget and other labels. I would like to hide and show specific tabs with respect to what the user selects.

Thanks.

mrjj

@amarism

Hi
You cannot hide them as such.
You can use removeTab() and addTab()
and keep the QWidget * around ( the tab)
so you take them out to be hidden and put in to be visible.

amarism

@mrjj do u have a piece of code. I getting very confused

JonB

@amarism
There is example code in a post in this forum, https://forum.qt.io/topic/47139/solved-hide-and-show-a-qtabwidget-tab, showing insertTab/removeTab() example?

amarism

@mrjj addItem is not a member for QTabWIdget

mrjj

@amarism
No, as its not addItem but
http://doc.qt.io/qt-5/qtabwidget.html#addTab

JonB

@amarism
You're saying all you want is to hide a tab on the tabbar, so that the user cannot see or click it, right?

If the addTab/removeTab is all too much for you, you might try leveraging:

Most of the functionality in QTabWidget is provided by a QTabBar (at the top, providing the tabs) and a QStackedWidget (most of the area, organizing the individual pages).

http://doc.qt.io/qt-5/qtabwidget.html#tabBar returns the QTabBar, and from there you could try making the desired tab an empty widget or a hidden one (e.g. setStylesheet with display: "none";) or something? It's food for thought.

BTW, if you are satisfied with disabling the tab instead of actually hiding it, there is always the simple http://doc.qt.io/qt-5/qtabwidget.html#setTabEnabled.

J.Hilk

Here a basic example:

//header of your class, you need at least a QString and a QWidget pointer as member variables

{
.....
private:
    QWidget *removedWidget = Q_NULLPTR;
    QString removedTabString;
}

//cpp part of your class, this creates a QTabwidget, populates it with 3 tabs, and uses remove and addTab to move the first tab to the end

QTabWidget *tWidget = new QTabWidget(this);
    tWidget->show();
    tWidget->addTab(new QWidget(), "Tab1");
    tWidget->addTab(new QWidget(), "Tab2");
    tWidget->addTab(new QWidget(), "Tab3");


    //The following lines will take Tab1, remove it/store it and add it back to the tabwidget at the last position


    //remove Tab and 'save' it in a member variable, its not really saved, but you store a pointer to it
    if(removedWidget == Q_NULLPTR){
        //Pointer is empty tab can be "stored"

        //Save Tab text
        removedTabString = tWidget->tabText(0);

        //'Save' actual widget
        removedWidget = tWidget->widget(0);

        //Remove from QTabWidget
        tWidget->removeTab(0);
    }

    //Add Tab to widget
    if( removedWidget != Q_NULLPTR){
        //The pointer actually points to a valid previously removed tab
        tWidget->addTab(removedWidget, removedTabString);

        //set pointer back to 0 to free it for potential next operation
        removedWidget = Q_NULLPTR;
    }

amarism

@JonB !
no, it's not like that people only see the tab name but after clicking he will see inside anything just like visual studio example.
I want to make my code for mention image. Where I will make 2 black round image when I will click this it will pop out.
.
Last I need to get 2nd one type output

amarism

@J.Hilk This code not hiding the tab, only increase the tab when we click on tab bar

J.Hilk

@amarism did you read the comments of the code example?

amarism

@J.Hilk Still am not able to complete my task

mrjj

Hi
What is not working ?
How does your current code look ?

amarism

@mrjj

I want to hide and show tab 1 and tab 2 by clicking on tab1 and tab 2. But when I used ur code they adding the extra tab on another side.

mrjj

Hi
So you have 2 tabwidgets?
Since its impossible to click on hidden tab as its not there. so you could never unhide it again with clicking.

So when user click on tab 1 on tabWidget1, you want tab 1 to be shown on tabwidget 2?

else i dont get what you are trying as the tab will be COMPLETELY gone if u "hide" it and hence you cannot click on it again
so some other means of showing it is needed.

Or did you just use @J-Hilk code as it is and got a second widget as it does
QTabWidget *tWidget = new QTabWidget(this);
??
If you are using that code with UI then
QTabWidget *tWidget = ui->yourtabwidget as else you will create a second one.

amarism

@mrjj hide means the content of the tab hides not tab1 & tab2 hide just like a visual studio. ie I will be uploaded in the previously. Just see the example

mrjj

@amarism
so you want to hide what INSIDE the tab and not the actual tab?

I dont know how Visual studio tabs works.
But in Qt the tab is the whole white area and it will always show regardless of what you put inside.

But if you just want to hide the content of the tab, why you ask how to remove / insert tabs.
It sounds like u just want to hide ListWidget or what you have inside and not the "Tab 1"

amarism

@mrjj Now how to resolve this problem.

mrjj

@amarism

Im still not sure what you are trying but if just to hide/show say ListWidget
you can simply use
ui->listwidget->show();
and
ui->listwidget->hide();

amarism

@mrjj I will try this one but when Clicking the Tab then inside the also hide and next we can't show hiding tab