basic question: getting value from qwidget and use it in mainapplication

[vishva]

hi,

Do you want get data from QLineEdit box ?

the follwing function should return what ever lineedit box contains

QString displayText() and QString text();

more details ,refer Qt Assistant

[sumsin]

If u want to get the value of text box from a QWidget to MainWindow,

declare an instance of QWidget say MyQWidget in ur MainWindow then u can get the value by MyQWidget->MyTextBox->text();

Or if u r doing all the things in designer(i.e. u r not creating any implementation header or source file) then the place where u r actually getting the text string, store this in an extern variable and access this extern variable in ur MainWindow.
But I would not recommend this approach, its better that u should create the implementation files for both ur QWidget and MainWindow, then implement the functionality there.