QLineEdit no longer accepts input after dis- and reenable QMainWindow on Mac/4.8.5
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Steps to reproduce:
QLineEdit widget in QMainWindow
window()->setEnabled(false); // disable whole window/menu for device communication, no abort
window()->setEnabled(true); // enable it again
QLineEdit no longer reacts to keyboard input
I can reproduce this on Mac 10.8.5 with Qt 4.8.5. Works on Win/4.8.5
Is this a bug or do I something wrong?
What else than disabling the mainwindow would you suggest to prevent user input while communicating to a device? The user should not be able to do anything (quit, click widgets, select menu items,...). Switching apps, moving windows is ok.MainWindow.cpp
@#include "MainWindow.hpp"MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
mEdit = new QLineEdit("after clicking the button, you no longer can edit this text", this);
mButton = new QPushButton("Disable window for 1 second", this);
mTimer = new QTimer(this);QWidget *centralwidget = new QWidget(this);
QVBoxLayout *layout = new QVBoxLayout(centralwidget);
layout->addWidget(mEdit);
layout->addWidget(mButton);setCentralWidget(centralwidget);
resize(500, 70);connect(mButton, SIGNAL(clicked()), this, SLOT(buttonClicked()));
connect(mTimer, SIGNAL(timeout()), this, SLOT(reenable()));
}MainWindow::~MainWindow()
{
}void MainWindow::buttonClicked()
{
// disable whole window/menu for device communication, no abort
window()->setEnabled(false);
mTimer->start(1000); // reenable after a second
}void MainWindow::reenable()
{
window()->setEnabled(true);
}@MainWindow.hpp
@#ifndef MAINWINDOW_HPP
#define MAINWINDOW_HPP#include <QtGui>
class MainWindow : public QMainWindow
{
Q_OBJECT
QLineEdit *mEdit;
QPushButton *mButton;
QTimer *mTimer;public:
MainWindow(QWidget *parent = 0);
~MainWindow();public Q_SLOTS:
void buttonClicked();
void reenable();
};#endif // MAINWINDOW_HPP@
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Hi,
You might be experiencing the same problem described "here":http://qt-project.org/forums/viewthread/34090/
You can try the patch attached to the bug report
