mousepress event

[tpthyd]

hi,
when i pressed the mouse, mousepressevent(Qmouseevent *event) is receving event. even if i hold the mouse button for sometime , mousepressevent() is calling only once. i want to call this event utill i released the mouse button. can anyone suggest me how to do this.

thanks and regards
sandeep

[Lykurg]

Simply use mousePressEvent with mouseMoveEvent!

mousePressEvent: bool isPressed = true;
mouseMoveEvent: if (isPressed) ...
mouseReleaseEvent: bool isPressed = false;

[aamer4yu]

What widget are you trapping the mousePressEvent for ?

If it is a button, you could very well use QAbstractButton::setAutoRepeat
Otherwise, on mouse press start you timer with some interval. and on mouse release stop this timer. Hope its not that difficult

[bigkoma]

Hi,

I describe a class parrent from QLineEdit :

#ifndef MOJEDIT_H
#define MOJEDIT_H
 
#include <QLineEdit>
 
class MojEdit : public QLineEdit
{
//Q_OBJECT
 
public:
    MojEdit(QWidget *parent);
virtual void mouseMoveEvent(QMouseEvent * e);
 
};
 
#endif // MOJEDIT_H

#ifndef MOJEDIT_H
#define MOJEDIT_H

#include <QLineEdit>

class MojEdit : public QLineEdit
{
//Q_OBJECT

public:
    MojEdit(QWidget *parent);
virtual void mouseMoveEvent(QMouseEvent * e);

};

#endif // MOJEDIT_H

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& cpp

#include "mojedit.h"
#include <QMessageBox>
#include <QMouseEvent>
 
MojEdit::MojEdit(QWidget *parent) : QLineEdit(parent)
{
    setFocusPolicy(Qt::StrongFocus);
}
 
void MojEdit::mouseMoveEvent(QMouseEvent * e)
{
    QMessageBox::about(0,"ll","BAM");
 
    if (e->button() == Qt::LeftButton)
    {
        QMessageBox::about(0,"ll","BAM");
    }
    else
        QLineEdit::mouseMoveEvent(e);
}

#include "mojedit.h"
#include <QMessageBox>
#include <QMouseEvent>

MojEdit::MojEdit(QWidget *parent) : QLineEdit(parent)
{
    setFocusPolicy(Qt::StrongFocus);
}

void MojEdit::mouseMoveEvent(QMouseEvent * e)
{
    QMessageBox::about(0,"ll","BAM");

    if (e->button() == Qt::LeftButton)
    {
        QMessageBox::about(0,"ll","BAM");
    }
    else
        QLineEdit::mouseMoveEvent(e);
}

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I use it :

MojEdit *ed = new MojEdit(centralWidget);
    ed->setObjectName(QString::fromUtf8("MojEdit"));
    ed->setGeometry(QRect(60, 40, 113, 25));

MojEdit *ed = new MojEdit(centralWidget);
    ed->setObjectName(QString::fromUtf8("MojEdit"));
    ed->setGeometry(QRect(60, 40, 113, 25));

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And i have error :

/home/michal/jkk/mainwindow.cpp:10: error: no matching function for call to ‘MojEdit::MojEdit(<unresolved overloaded function type>)’

/home/michal/jkk/mainwindow.cpp:10: error: no matching function for call to ‘MojEdit::MojEdit(<unresolved overloaded function type>)’

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I add that if I have :

MojEdit *ed;
    ed->setObjectName(QString::fromUtf8("MojEdit"));
    ed->setGeometry(QRect(60, 40, 113, 25));

MojEdit *ed;
    ed->setObjectName(QString::fromUtf8("MojEdit"));
    ed->setGeometry(QRect(60, 40, 113, 25));

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Then it program is compiled correct , but I can't run it:

Starting /home/michal/jkk/jkk...
 
The program has unexpectedly finished.
 
/home/michal/jkk/jkk exited with code 0

Starting /home/michal/jkk/jkk...

The program has unexpectedly finished.

/home/michal/jkk/jkk exited with code 0

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So, what's wrong ?

/>>>> Edit <<<<

Moderator can delete this post. I resolve my problem.

I replace : centralWidget to MainWindow::centralWidget() .