Reopen Form Widget after deletion

[Fivezero05]

I want to open a new form, close it an reopen it.

However, when I reopen it, all changed stuff still is there (like text in a label or something like that). Now I am not really concerned with these trivial visual ... leftovers, but more with the inner working. Will a timer keep running after i close this window? Keep updating labels with pictures? (I don't really want that by default)

So what I want is : I open a new form, after that form is closed, it will be destroyed an renewed. This would result in a fresh screen ready to start.

I know it is not that crazy. In VB.NET it looks like this:

// the initialization :

Private WithEvents _frmLogging As frmLogging

Private WithEvents _frmLogging As frmLogging

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//opening the form, by pressing a button or something

_frmLogging = New frmLogging
_frmLogging.Show()

_frmLogging = New frmLogging
_frmLogging.Show()

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//deleting it when it is closed :

Private Sub CatchClosingLog(sender As Object, e As EventArgs) Handles _frmLogging.FormClosed
        _frmLogging.Dispose()
        _frmLogging = Nothing
    End Sub

Private Sub CatchClosingLog(sender As Object, e As EventArgs) Handles _frmLogging.FormClosed
        _frmLogging.Dispose()
        _frmLogging = Nothing
    End Sub

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I want to replicate this in Qt . frmMain is my Qmainwindow and I want to open frmTest which is represented by oTestFrame.

void frmMain::on_btnOpenNew_clicked()
{
	oTestFrame.show();
	__hook(&frmTest::FormClosed, &oTestFrame, &frmMain::OnCloseSecondTry); //Here I create an event. This allows me to run code in [I]frmMain[/I] after [I]frmTest[/I] is closed
}

void frmMain::on_btnOpenNew_clicked()
{
	oTestFrame.show();
	__hook(&frmTest::FormClosed, &oTestFrame, &frmMain::OnCloseSecondTry); //Here I create an event. This allows me to run code in [I]frmMain[/I] after [I]frmTest[/I] is closed
}

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When oTestFrame is closed, OnCloseSecondTry is executed. That is were it all goes wrong.

void frmMain::OnCloseSecondTry()
{
	__unhook(&frmTest::FormClosed,& oTestFrame, &frmMain::OnCloseSecondTry); //unhook event, just good practice, I don't really think it will matter after the object is destroyed (Am I wrong?)
	oTestFrame.~frmTest();
	frmTest oTemp;
	oTestFrame = &oTemp;
}

void frmMain::OnCloseSecondTry()
{
	__unhook(&frmTest::FormClosed,& oTestFrame, &frmMain::OnCloseSecondTry); //unhook event, just good practice, I don't really think it will matter after the object is destroyed (Am I wrong?)
	oTestFrame.~frmTest();
	frmTest oTemp;
	oTestFrame = &oTemp;
}

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The important variables are declared in frmMain.h :

...
private:
	frmTest oTestFrame;
	void OnCloseSecondTry();
...

...
private:
	frmTest oTestFrame;
	void OnCloseSecondTry();
...

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I destroy oTestFrame. But I can not insert a fresh frmTest object in oTestFrame.
I read somewhere you could not store a Qwidget in a Qwidget. Is that true?
How can i get this to work? Any suggestions welcome :P