[SOLVED] QTabWidget->currentWidget() returns NULL

[tusharkant15]

Hi!, I'm writing a text editor in qt (4.8.5) mainly for learning. I have QTextEdit widgets inside a QTabWidget. However when I go to access the QTextEdit using the currentWidget function it returns a NULL.

A little snippet:
_QWidget *current = maintab->currentWidget();
if(current == NULL)
qDebug() << "NULL";
else
qDebug() << current->metaObject()->className();
_
The output that I get is NULL where I'm expecting QTextEdit. I create the widget using:

maintab->addTab(new QTextEdit(), "New File");

What am I doing wrong??

[thEClaw]

The documentation says the following:

bq. Returns a pointer to the page currently being displayed by the tab dialog. The tab dialog does its best to make sure that this value is never 0 (but if you try hard enough, it can be).[/quote]

I guess you tried hard enough, congratulations.

Did you actively switch to that current widget? Is the whole TabWidget visible including the tabbar and one if its widgets?

[tusharkant15]

Never mind found the problem. I feel kinda silly.. I was trying to extract qtextedit in a function that is called before any new tabs are even made. Silly me.....

[thEClaw]

Two small things to add:

1. There is a code-tag (last button for me) which would have made your code above a lot easier to read.

2. It is good habit to edit the title of your threads and put a [Solved] in front once a problem is solved. Would be a lot easier to navigate in here if everybody did that.

Happy coding! :)

[tusharkant15]

Cool, I'll keep that in mind.