How can I set Styles to a QTabwidget without overwriting existing styles in QT ?

seetharam

Hi
How can I set Styles to a QTabwidget without overwriting existing styles in QT ?
I have designed QTabWidget in QTCreator and that will not show QTabwidget class to overwrit tabBar function .
Please suggest me

THanks

mrjj

Hi and welcome
You can set style sheet directly in Designer.
Right click the tabwidget and choose change style sheet.

A style sheet is all or nothing. so if u all apply style sheet,
it might sort of reset the look for some widgets and to fix that, you must
supply a full stylesheet.

seetharam

Thank you for your help

Actually My problem is I have to change tab background color to gray and tab text color to red using setStyle sheet , but if I do with setStyleSheet (QTabBar::tab::selected(QTabBar { background-color : gray ; color : red }))
it is changing the background color and text color , but here the problem is , it is overwriting existing tab styles
suppose my tab shape is Triangular , it is changing to rectangular and border is getting changes and text font also getting changed .
is there any way to apply only mentioned two changes and , it should not disturb existing styles.

Thanks for your help.

mrjj

Hi
That is the "all or nothing part"
To make it look normal again, you need to set it via style sheet.

You cannot (sadly) sort of apply on top the normal style. Once it
uses a stylesheet. all looks must come from it. OR in other words, it
will disturb the original look/style.

In your case, you might be able to use palette
https://wiki.qt.io/How_to_Change_the_Background_Color_of_QWidget
Not sure with font color though.

Ni.Sumi

Hi @seetharam ,

In addition to Mr. @mrjj , I would like to add some which might help you.
You can also apply style sheets to the object.This will override the existing style sheet only for that widget. Usually the child widget gets the style sheet from the parent widgets.

_Object_Name1->setStyleSheet();  or 

from ui->right clikc ->changeStylesheets (As Mr. @mrjj  said in the previous comment)
#_Object_Name1 QWidget
#_Object_Name2 QWidget {
...
}

seetharam

Hi Thank you for your Help ...

but is there any way to get existing styles in a String
QStting styleSheet() function is not fetching existing styles(giving " " ) .

Ni.Sumi

@seetharam

AFAIK, It's not possible. Lets say, if you have Object_Name1->setStylesheet("background-color:red") / in ui # Qwidget{ background-color:red }.Both will give you red back ground.
Now if you set other setStylesheet to object_NAme1 after first style sheet some where like this Object_Name->setStyleSheet("backgound-color-blue"), then the first red back ground color will be overwritting with blue()BUT not all widget, its only to widget you set).
As Mr. @mrjj said, it is all or nothing.

This might help you in this way. (***I did not test this, long back I have seen this on google for my purpose)

tabBar_1->setStyleSheet( QString("{") +tabBar_1>styleSheet()+ QString("}") + QString("QPushButton{border:url(……correct image path);}") )

seetharam

Thank you

I tried " tabBar_1->setStyleSheet( QString("{") +tabBar_1>styleSheet()+ QString("}") + QString("QPushButton{border:url(……correct image path);}") ) " also
StyleSheet is not giving the existing Styles . So I am getting the same behavior.

Thanks