How to add QStatusBar to QDialog in QDesigner (the QDialog allready styled )

[umen242]

Hello all (sorry if i post to much )
i have QDialog that is heavily designed with QDesigner , i saw on the web that i could add QStatusBar with code like this :
@ #include <QDialog>
#include <QStatusBar>
#include <QLayout>
#include <QApplication>
#include <QTextEdit>
#include <QStatusTipEvent>

class Dialog : public QDialog {
public:
Dialog() : QDialog(){
QLayout *l = new QVBoxLayout(this);
QTextEdit *te = new QTextEdit;
te->setStatusTip("XXX");
l->addWidget(te);
bar = new QStatusBar;
l->addWidget(bar);
l->setMargin(0);
l->setSpacing(0);
}
private:
QStatusBar *bar;
protected:
bool event(QEvent *e){
if(e->type()==QEvent::StatusTip){
QStatusTipEvent *ev = (QStatusTipEvent*)e;
bar->showMessage(ev->tip());
return true;
}
return QDialog::event(e);
}
};
 
int main(int argc, char **argv){
QApplication app(argc, argv);
Dialog dlg;
return dlg.exec();
}@

its not even working in my case .. maybe the QDialog is already have few layets that holds widget .
my question is can i some how use palceholder in the QDesigner or somehow promote widget that place hold the QStatusbar class
i don't know ...
what can i do in such case? can i implement new QStatusbar?
Thanks

[goetz]

Thou shall not reimplement virtual methods in a header file.

[sigrid]

You can create a statusbar plugin and use it in Designer directly that way, see the "documentation":http://doc.qt.nokia.com/4.7/designer-creating-custom-widgets.html:

[andre]

[quote author="Volker" date="1306412536"]Thou shall not reimplement virtual methods in a header file.[/quote]

Really? Any explanation for that one? I do that here and there, and it works just fine for what I do...

[cincirin]

Volker's idea it's good because some compilers don't create v-table if virtual functions are implemented in header files.

[umen242]

what i did is in designer i added widget as place holder , and then in my application i removed it and replaced it with my statusbar , working file .

[andre]

[quote author="cincirin" date="1306498651"]Volker's idea it's good because some compilers don't create v-table if virtual functions are implemented in header files.[/quote]
OK, thanks for that explanation.

[alexander]

umen242, you can use Promote to... context menu item in designer

[goetz]

[quote author="cincirin" date="1306498651"]Volker's idea it's good because some compilers don't create v-table if virtual functions are implemented in header files.[/quote]

That's especially the case, when you do not have other method implementations in a .cpp file. If I remember correctly, that's one of the the reasons why it's recommended to implement a virtual destructor always in a .cpp, even if it's empty, as it forces the creation of a vtable.

[umen242]

thanks for the answers ,what i did is in the designer i used widget as place holder , then in the application i removed it and replaced with my status bar