Trouble while viewing a created a toolbar!!

Hi,

I am facing a problem while viewing a toolbar on after creating..

Steps followed:
1) Created a QAction.
2 ) I've created a tool bar for my main window
3) I am adding action to toolbar.

But I was unable to see the Icon on the toolbar.

The Action is properly created as I can see the same in Menu (same action is added into the Menu).

Then, I tried adding the "setStretchableWidget()" for the toolbar.

I've noticed that the tool bar option is overlapped by a blank strip (may be a toolbar instance don't know why it is comming :( ) and the toolbar is created.

I've also made sure that no other tool bar instance is created.

Can anybody help me to identify the problem.

Thanks in Advance

Regards,
Aditya