Qt eventFilter

索引サイト





#ifndef MAINWINDOW_H

#define MAINWINDOW_H
#include 
namespace Ui {

class MainWindow;

}

class MainWindow : public QMainWindow

{

    Q_OBJECT

    

public:

    explicit MainWindow(QWidget *parent = 0);

    ~MainWindow();

protected:

    bool eventFilter(QObject *obj, QEvent *event);

private:

    Ui::MainWindow *ui;

};
#endif // MAINWINDOW_H





#include "mainwindow.h"

#include "ui_mainwindow.h"

#include "qdebug.h"
MainWindow::MainWindow(QWidget *parent) :

    QMainWindow(parent),

    ui(new Ui::MainWindow)

{

    ui->setupUi(this);

    ui->pushButton->installEventFilter(this);

    ui->comboBox_1->installEventFilter(this);

    ui->comboBox_2->installEventFilter(this);

    ui->lineEdit_1->installEventFilter(this);

    ui->lineEdit_2->installEventFilter(this);

    ui->lineEdit_3->installEventFilter(this);

}
MainWindow::~MainWindow()

{

    delete ui;

}

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

{

    if (event->type() == QEvent::FocusIn)

    {

        if (object == ui->pushButton){qDebug() << "pushButton FocusIn";}

        if (object == ui->comboBox_1){qDebug() << "comboBox_1 FocusIn";}

        if (object == ui->comboBox_2){qDebug() << "comboBox_2 FocusIn";}

        if (object == ui->lineEdit_1){qDebug() << "lineEdit_1 FocusIn";}

        if (object == ui->lineEdit_2){qDebug() << "lineEdit_2 FocusIn";}

        if (object == ui->lineEdit_3){qDebug() << "lineEdit_3 FocusIn";}

    }

    if (event->type() == QEvent::FocusOut)

    {

        if (object == ui->pushButton){qDebug() << "pushButton FocusIn";}

        if (object == ui->comboBox_1){qDebug() << "comboBox_1 FocusOut";}

        if (object == ui->comboBox_2){qDebug() << "comboBox_2 FocusOut";}

        if (object == ui->lineEdit_1){qDebug() << "lineEdit_1 FocusOut";}

        if (object == ui->lineEdit_2){qDebug() << "lineEdit_2 FocusOut";}

        if (object == ui->lineEdit_3){qDebug() << "lineEdit_3 FocusOut";}

    }

    return false;

}




AX