ui problem

[srohit24]

I have two classes that share the same ui.One is the main class called classM and other a sub class of classM called classS.

I am able to effect he ui in classM and get data from the ui(i have a line edit and a few more such input widgets)

But when i try to change the ui from the sublcass classS, it does nothing. It doesnt show any errors eother, but always gives back a blank string for text command in line edit.

This is the header of classM

namespace Ui
{
    class classMui;
}
class classM : public QMainWindow
{
    Q_OBJECT
private:
       Ui::classMui *ui;

namespace Ui
{
    class classMui;
}
class classM : public QMainWindow
{
    Q_OBJECT
private:
       Ui::classMui *ui;

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This is the header of classS

namespace Ui
{
    class classMui;
}
class classS : public QMainWindow
{
    Q_OBJECT
 
private:
     Ui::classMui *ui;

namespace Ui
{
    class classMui;
}
class classS : public QMainWindow
{
    Q_OBJECT

private:
     Ui::classMui *ui;

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ui->passEdit->text();;

I am able to get text for this same code in classM, where as in classS, it gives me a emty string.

what am i doing wrong?