The action works well, but the action can not use from the setStatusTip()

Hello.in this code, the QMenu and the QAction work well.but the newact can not use from the setStatusTip("Open a new file"); thank you.

Code:

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#ifndef WIDGET_H
#define WIDGET_H
#include <QtWidgets>
class widget:public QMainWindow
{public:
   widget();
   void createmenu();
   void createaction();
private:
   QTextEdit*text;
   QMenu*filemenu;
   QAction*newact;
};
#endif // WIDGET_H

---

Code:

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#include <QtWidgets>
#include "widget.h"
widget::widget()
{text=new QTextEdit;
resize(250,250);
setCentralWidget(text);
createaction();
createmenu();
}
void widget::createmenu()
{filemenu=menuBar()->addMenu(tr("File"));
filemenu->addAction(newact);
}
void widget::createaction()
{
    newact=new QAction(tr("&New"),this);
newact->setShortcut(QKeySequence::New);
newact->setStatusTip("Open a new file");
}

---

Code:

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#include "widget.h"
#include <QtWidgets>
int main(int argv,char*argc[])
{
    QApplication app(argv,argc);
    widget window;
    window.show();
    return app.exec();
}

---

What have you tried so far?

Cheers,
_

I try to display the message on the status bar, when the mouse goes on the new action.But in this code, it does not work.

What happen when you derive a class from QMainWindow, but forget to include the Q_OBJECT macro in the class definition? (Look at the header file for any class derived from a Qt QObject class and compare that with the definition of your "widget" class in your header file).

Quote:

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Originally Posted by rezas1000

I try to display the message on the status bar, when the mouse goes on the new action.But in this code, it does not work.

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Can you see a status bar in your window at all?

The code as posted does not display a status bar. When you create the status bar it shows the specified text just fine (Linux, Qt 5.3).

Quote:

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Originally Posted by rezas1000

I try to display the message on the status bar, when the mouse goes on the new action.

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I see no code that indicates that.
Did you forget to post the code that sets up the status bar?

Cheers,
_

Quote:

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I see no code that indicates that.
Did you forget to post the code that sets up the status bar?

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thank you very much

Quote:

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The code as posted does not display a status bar. When you create the status bar it shows the specified text just fine (Linux, Qt 5.3).

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thank you very much

Quote:

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Can you see a status bar in your window at all?

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thank you very much

Quote:

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What happen when you derive a class from QMainWindow, but forget to include the Q_OBJECT macro in the class definition? (Look at the header file for any class derived from a Qt QObject class and compare that with the definition of your "widget" class in your header file).

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thank you very much


the code is working well, Because I changed the code and I added the createStatusBar():

Code:

---

#include <QtWidgets>
#include "widget.h"
widget::widget()
{text=new QTextEdit;
resize(250,250);
setCentralWidget(text);
createaction();
createmenu();
createStatusBar();
}
void widget::createmenu()
{filemenu=menuBar()->addMenu(tr("File"));
filemenu->addAction(newact);
}
void widget::createaction()
{
newact=new QAction(tr("&New"),this);
newact->setShortcut(QKeySequence::New);
newact->setStatusTip("Open a new file");
}
void widget::createStatusBar()
{
    statusBar()->showMessage(tr("Ready"));
}

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