Problem with QHBoxlayout & QVBoxlayout

[phillip_Qt]

Hi All
I need u ppls help. Actually i had a Dailog. I added some QPushButton and QLineEdit in different vertical layout. again while i compiled my solution an error is coming l. in my Ui_Form. its hshowing
error C2039: 'setContentsMargins' : is not a member of 'QVBoxLayout'

//vboxLayout->setContentsMargins(9, 9, 9, 9); getting error for this function call

I dont know why this is coming. i'll b thankful if any body helps me.

Regards
Phillip