hi all,
i'm trying to compile my project, that i have made under linux, in windows
graphForm::graphForm(QWidget *parent) :
QMdiSubWindow(parent),
ui(new Ui::graphForm)
in the code with red color i get the following error, although i have no problems in liunx

Fehler:C2512: 'Ui::graphForm' : no appropriate default constructor available
does onybody know what could that be

any help will be apreciated