Invalid pixmap

[munna]

I want to find if a label has a pixmap or not.

Qt Docs says :

If no pixmap has been set this will return an invalid pixmap.

But how can you find if a pixmap is valid or not?

When I try to use

if(!pixmap()->isNull()){
	//Do some thing
}

if(!pixmap()->isNull()){
	//Do some thing
}

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my application crashes

Pls help

Thanks a lot.

[ChristianEhrlicher]

Hint: Did you thought about pixmap() is maybe NULL?

[munna]

oh i never thought about it. Thanks, it works.