EventFilter and MouseMoveEvent

[jacek]

but don't appear: MouseButtonPress = 2, MouseButtonRelease = 3, MouseButtonDblClick = 4,MouseMove = 5.
And how MouseMove is Called?

Don't you need to enable mouse tracking to get these?

[mickey]

Hi,
I link a loadButton to a SLOT:

MainfForm::load {
    loadButton->installEventFilter(this->myWidget1);
    loadButton->installEventFilter(this->myWidget2);
    loadButton->installEventFilter(this->myWidget3);
     ......
   QFileDialog fd;
   QString te = fd.getOpenFileName(xdir.path()+"/"+" ....",
   ...........
}

MainfForm::load {
    loadButton->installEventFilter(this->myWidget1);
    loadButton->installEventFilter(this->myWidget2);
    loadButton->installEventFilter(this->myWidget3);
     ......
   QFileDialog fd;
   QString te = fd.getOpenFileName(xdir.path()+"/"+" ....",
   ...........
}

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Then:

bool MyWidget::eventFilter(QObject* obj, QEvent* e) {
	cout << "filter\n";
		cout << e->type() << endl;
		if ( e->type() == QEvent::Move)  {
		  cout << "filter out\n";
		  return  TRUE;
		} 
		return QGLWidget::eventFilter(obj,e);
}

bool MyWidget::eventFilter(QObject* obj, QEvent* e) {
	cout << "filter\n";
		cout << e->type() << endl;
		if ( e->type() == QEvent::Move)  {
		  cout << "filter out\n";
		  return  TRUE;
		} 
		return QGLWidget::eventFilter(obj,e);
}

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I have 3 instance of MyWidget. The MouseMoveEvent in myWidget start when I choose a file "with doubleClick" in QFileDialog but printf inside QMouseEvent (in MyWidget) says
that only mouseMove start...

A hint? Thanks

[fullmetalcoder]

did you enable mouse tracking ??? Basically a widget records mose move only when a click occurs...

You can change that settings :

setMouseTracking(true) ;

setMouseTracking(true) ;

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[mickey]

did you enable mouse tracking ??? Basically a widget records mose move only when a click occurs...

You can change that settings :

setMouseTracking(true) ;

setMouseTracking(true) ;

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yes I proved.Don't change...I'm thinking that QmouseMoveEvent starts for some strange
reason.......

[axeljaeger]

Because you tried to contact me via skype and sending message failed, here's what I said there:

It would help if you'd provide a full working example with source as short as possible so I can try on my machine. I and others already suggested what could be the reason. If none of our tipps work, we have to see code. Often while you create such a like 100 LOC application, you solve the problem because the problem does not occur in the small testapp. Then you will compare what is different and hopefully find the reason. If not, post the programm

[mickey]

axeljaeger, thanks for reply...
I solved my problem but I don't understand why qMouseMoveEvent of MyWidget:: starts
starts after the code of loadButton():

void MainForm::loadbutton()
{
	this->myWidget->installEventFilter(this->myWidget);
         .............
         printf("end mainform()LoadButt\n");
}

void MainForm::loadbutton()
{
	this->myWidget->installEventFilter(this->myWidget);
         .............
         printf("end mainform()LoadButt\n");
}

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(With the printf above I see that QMouseMoveEvent of myWidget starts after (out) loadButtton(). But Why? I coded removeFilter at the end of loadbutton() but QmouseMoveEvent starts after and so don't filter it)

bool MyWidget::eventFilter(QObject* obj, QEvent* e) {	
	if (obj == this) {
		cout << e->type() << endl;	
		if ( e->type() == QEvent::MouseMove) {
		 this->removeEventFilter(this);		
		    cout << "filter out\n";
		  return  TRUE;
		} 
		else {
			return QGLWidget::eventFilter(obj,e);	
		}
	}
}

bool MyWidget::eventFilter(QObject* obj, QEvent* e) {	
	if (obj == this) {
		cout << e->type() << endl;	
		if ( e->type() == QEvent::MouseMove) {
		 this->removeEventFilter(this);		
		    cout << "filter out\n";
		  return  TRUE;
		} 
		else {
			return QGLWidget::eventFilter(obj,e);	
		}
	}
}

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With cout << e->type I see all QEvent on myWidget and MouseMove runs only after the oadButton()...so I filter out only one (setMouseTracking is off) QMouseMove and I put removeFilter in the eventFilter (but I don't LIKE this....) .
What do you think of this?
thanks