How to detect whether predictive text in vkb is active or not? - Qt

[raj.qtdev]

I know that if I want to disable predictive text in vkb if my QTextEdit has focus, I can do it like this

@ mChatInputLine->setInputMethodHints(Qt::ImhNoPredictiveText);@

On user selects numeric key on vkb, predictive text is disabled by default. Is there any way to detect this?
Thing is, I need to change the geometry of QTextEdit if predictive text is on or off.

Please suggest.

Thanks

[leon.anavi]

Which version of Qt are you using and which platform are you targeting?

[raj.qtdev]

I am targetting symbian devices based on Qt and I am using Qt 4.7.3

I am using Nokia 1.1 Qt SDK.