How to know if QTimeEdit field clicked?

masa4

I need to listen click events of line edits&time edits. Line edit works but time edit does not work:

MyClass::MyClass(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::MyClass)
{
    ui->setupUi(this);

    ui->lineEdit->installEventFilter(this);
    ui->timeEdit->installEventFilter(this);
}
bool MyClass::eventFilter(QObject* object, QEvent* event)
{
    if((object == ui->lineEdit || object == ui->timeEdit) && event->type() == QEvent::MouseButtonPress) {
        qDebug() << "mouse clicked";
        return false;
    }
    return false;
}

Any idea?

If I click the arrows near the timeEdit, the event is occuring but if i click text part, it doesnt occur.

JonB

@masa4
A QTimeEdit may have some other widget for the text editing field, and events for that may not filtered by the QTimeEdit level, I don't know. Try a ui->timeedit->findChildren<QWidget *>(), if it has child widgets maybe you need to install an eventFilter() on those or change your if (object == ... conditions?

mpergand

@masa4 said in How to know if QTimeEdit field clicked?:

If I click the arrows near the timeEdit, the event is occuring but if i click text part, it doesnt occur.

Try with QEvent::FocusIn instead.

CPPUIX

The problem is with QAbstractSpinBox, it does not take mouse press events on its QLineEdit.

So I looked it up and found this solution, basically just sub-class QTimeEdit, and use its lineEdit(it's its child), and install your event filter on it. Which is what @JonB told you to try as well.

Here's my implementation:
mainwindow.cpp

#include "mainwindow.h"
#include "./ui_mainwindow.h"
#include <QLayout>


MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    MyTimeEdit *timee = new MyTimeEdit(this);
    //find TimeEdit's child, just like JonB says, but specify that it's a QLineEdit 
    editor = timee->findChild<QLineEdit *>();
    editor->installEventFilter(this);
    this->layout()->addWidget(timee);
    this->timee->setGeometry(20,20,50,50);


}

MainWindow::~MainWindow()
{
    delete ui;
}

bool MainWindow::eventFilter(QObject* object, QEvent* event)
{

    if(object == editor && event->type() == QEvent::MouseButtonPress)
    {
        fprintf(stderr,"you have clicked\n");
        return false;
    }
    
    return false;
}

mainwindow.h:

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QWidget>
#include <QLineEdit>
#include <QTimeEdit>

class MyTimeEdit : public QTimeEdit
{
    Q_OBJECT

public:
    MyTimeEdit(QWidget *parent = nullptr){};
    QLineEdit* lineEdit(){};
};

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
    MyTimeEdit *timee = new MyTimeEdit(this);
    QLineEdit *editor;

protected:
    bool eventFilter(QObject* object, QEvent* event) override;

private:
    Ui::MainWindow *ui;

};
#endif // MAINWINDOW_H

CPPUIX

@masa4 Don't forget to mark this topic as solved, it would help future readers to know that there's a solution.