[Solved] First menu on menubar not activating when moused over

PSI-lbc

bump...for an interesting problem. Had the same issue.

Side note: it appears to only occur on Windows and not for MacOS code...maybe because the menu is separated from the app window?

kaha6uc

Bump from me too... two years later! I had the same problem. I was instantiating a child of a KTextEditor with "this" in the constructor. When I changed "this" to 0 the menu now works fine and is clickable and all. Thank you!

rlopatta

me 2!

costs me several weeks of checking...

until I found this post.

thx a lot, guys!

Ruediger

Yash

Saved my life...ops .. I mean saved lots of my time

thank you

[quote author="blane245" date="1314113867"]I was working on getting you a copy with just the menu problem and not all of the application guts when I found one of my objects that was making the main window a parent. When I removed the relationship the menu starting working. My object was not a widget and does not need the window to own it. Problem solved. Thanx for leading me into the solution.

I guess I need to read up on parent/child relationships in Qt.[/quote]

sonichy

I run into this problem too.
Change
label=new QLabel(this)
to
label=new QLabel;
This label has not add too any window, I use it to save QFont.

PdxEngineer

This is the gift that keeps on giving. Ran into this problem today and would have never solved it without this thread. Thanks!!!

-xk-

This thread helped me to get to the problem. I would like to propose a quick way to find the solution that worked for me since I had such a big project and many children widgets.

If you know how to subclass an event filter it's pretty simple...

PART 1) in EventFilter.h

#define EVENTFILTER_H
#include <QWidget>
#include <QDebug>
#include <QEvent>

class EventFilter : public QWidget
{
    Q_OBJECT
public:
    explicit EventFilter(QWidget *parent = 0);
signals:   
protected:
    bool eventFilter(QObject *target, QEvent *event);
};

#endif // EVENTFILTER_H

PART 2) in EventFilter.cpp

EventFilter::EventFilter(QWidget *parent):
    QWidget(parent)
{    
}
bool EventFilter::eventFilter(QObject *target, QEvent *event)
{
if (event->type() == QEvent::KeyPress)
    {        
        QPoint p = QCursor::pos();
        QWidget *w = QApplication::widgetAt(p);
        qDebug() << w;
    }
}

PART 3) in your mainwindow constructor or w/e you load up settings

#include "EventFilter.h"

EventFilter* myFilter = new EventFilter();
this->installEventFilter(myFilter);

PART 4) go hunting with your new invisible widget detector!

Just hover your mouse over the defective file menu items and press your spacebar, it should output the topmost offending widget to the console for you to know what you are looking for. In my case it was ANOTHER eventfilter that I had parented mistakenly way back when. Happy hunting!

If you have a small project just use previous methods should be simple enough.

SGaist

@xk hi and welcome to devnet,

Thanks for the mini-guide. You can simplify one thing: EventFilter does not need to inherit QWidget, QObject is fine.

amitkawade47

@blane245 @Yash Thanks. saved a lot of time. This thread is very helpful.

Boghy

@blane245 Thanks, lost a lot of time without figuring this out and then I found this useful thread.