Show parent window

Hello All,


I have developed one application,in which I m using 4-5 different screens to navigate.

Now from Mainwindow screen I have activated the another screen,so my mainwindow is now hidden .But in this new screen on one button click event I need to show the mainwindow screen .

How to acheive it???

The code I m using is as follows

in MainWindow.cpp

Code:

---

void MainWindow::f_Open_screen_al()
{	
	screen_al->show();
	screen_al->activateWindow();
}
 
void MainWindow::ShowMainWindow()
{	
	this->activateWindow();
}

---

and in screen_al.cpp

Code:

---

connect(ui.pushbutton, SIGNAL(clicked()), this->parent(), SLOT(ShowMainWindow()));

---

But No mainwindow is displayed.....

Pls help

try this

Code:

---

void MainWindow::ShowMainWindow()
{
    raise();
    this->activateWindow();
}

---

I tried this code

Code:

---

void MainWindow::ShowMainWindow()
{   
    QMessageBox::information(this,"ShowMainWindow","ShowMainWindow");
    raise();
    this->activateWindow();
}

---

The QMessageBox is displayed but no child window is closed nor the mainwindow is displayed

For activating the mainWindow I used the code

Code:

---

ui.setupUi(this);

---

and in ui_mainwindow.h "this" is QMainWindow type

Code:

---

void setupUi(QMainWindow *MainWindow)

---

what to do now?

you said that your main window was hidden? if u called hide() then you should call show() in MainWindow::ShowMainWindow()

try it

Code:

---

void MainWindow::ShowMainWindow()
{   
    show();
}

---

I want to call one of my mainwindow function on close event of child window ,how to connect this signal..


Previously I tried

Code:

---

connect(this,SIGNAL(destroyed()),this->parent(),SLOT(f_max()));

---

but as I m closing a child window using

Code:

---

this->close()

---

so "destroyed event "is not getting triggered ...

try these

Code:

---

this->close();
MyMainWindow*p=(MyMainWindow*)this->parent();
p->f_max();

---

or

Code:

---

void child::closeEvent(QCloseEvent*)
{
 
  MyMainWindow*p=(MyMainWindow*)this->parent();
  p->f_max();
 
}

---

or

Code:

---

MyMainWindow*p=(MyMainWindow*)this->parent();
connect(this,SIGNAL(destroyed()),p,SLOT(f_max()));

---

Code:

---

MyMainWindow*p=(MyMainWindow*)this->parent();

---

In above code ,In place of "MyMainWindow" what should I put?

in mainwindow .h class is decraled as..

Code:

---

class MainWindow : public QMainWindow
{
}

---

cant we connect a close event to parent window function???

I just need to detect the close event of this child window and connect my f_max() function to that signal

put MainWindow instead of MyMainWindow and use the closeEvent code i showed u