[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:

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