I have a parent dialog. and i am launching a child dialog from within the parent dialog. code below

// inside parent dialog
QString pValue;
ChildDialog = new ChildDialog(this);
ChildDialog->exex();


// inside child dialog
QString cValue = need to get the value of pValue declared in parent dialog.

i want to pass the value of a QString value from the parent dialog to child dialog..
how can i access the QString value in my ChildDialog???
how can i pass/ access the value from the parent dialog ??

Thanks.