On Tue, Apr 24, 2012 at 01:58:00PM +0200, Sujan Dasmahapatra wrote:
>
>
> I have my mainwindow which is QMainWindow the parent of all my other
> classes. I am type casting upwards from 5 levels down using
> reinterpret_cast, to access the mainwindow to display message using
> statusBar(), but when type casting it's not giving error but when
> accessing mainwindow->statusBar() it's crashing.
>
>
> please check the code snippet below:
>
>
> [code]
>
> QWidget *wid = reinterpret_cast<QWidget *>(parent());
>
> CSheet *sheet = reinterpret_cast<CSheet *>(wid->parent());
>
> QScrollBar *scrollBar = reinterpret_cast<QScrollBar *>(sheet->parent());
>
> CTabWidget *tabWid = reinterpret_cast<CTabWidget
> *>(scrollBar->parent());
>
> CDataPage *dataPage = reinterpret_cast<CDataPage *>(tabWid->parent());
>
> MainWindow *mainwin = reinterpret_cast<MainWindow
> *>(dataPage->parent());
>
> mainwin->statusBar()->showMessage(tr("A new plot being added!!"),5000);
> //[I][SIZE=7]Here it is crashing[/SIZE][/I]
>
> [/code]
>
>
>
> please help me someone whats going wrong in this. Thanks a lot for any
> help. Sujan
If you just want to show a message on the status bar, do not do this
whole bunch of casts at all.
Just keep a pointer to your main window somewhere.
regards,
Andre
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