size of Mainwindow Shrinks when i call it from a Dialog

[ranjit.kadam]

Hello Friends ,I have written the code to call a mainwindow from a dialog on pushbutton click as below

void Dialog1::on_pushButton_2_clicked()
{
         MainWindow *b=new MainWindow;
         b->showMaximized();
     }

void Dialog1::on_pushButton_2_clicked()
{
         MainWindow *b=new MainWindow;
         b->showMaximized();
     }

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and i can go to the mainwindow but the size (layout) is changing,I dont know how to solve this,so please help me out


regards
ranjit