【提问】请教一下ＱＴ中的ＱＭＵＬＴＩＬＩＮＥＥＤＩＴ中ＴＡＰ键禁用～～！！ [复制链接]

#include <QApplication>
#include <QTextEdit>
#include <QKeyEvent>
#include <QLineEdit>
#include <QMainWindow>
#include <QPushButton>
#include <QGridLayout>
class MyTextEdit:public QTextEdit
{
public:
     MyTextEdit(QWidget *parent = 0);
     ~MyTextEdit();
private:
     void keyPressEvent(QKeyEvent *event);
     void keyReleaseEvent(QKeyEvent *event);
};
MyTextEdit::MyTextEdit(QWidget *parent)
     :QTextEdit(parent)
{
}
MyTextEdit::~MyTextEdit()
{
}
void MyTextEdit::keyPressEvent(QKeyEvent *event)
{
     if (event->key() == Qt::Key_Tab)
     {
           event->ignore();
     }
     else
     {
           QTextEdit::keyPressEvent(event);
     }
}
void MyTextEdit::keyReleaseEvent(QKeyEvent *event)
{
     if (event->key() == Qt::Key_Tab)
     {
           event->ignore();
     }
     else
     {
           QTextEdit::keyReleaseEvent(event);
     }
}
class MyWidget: public QMainWindow
{
public:
     MyWidget(QWidget *parent = 0);
     ~MyWidget();
private:
     MyTextEdit *myTextEdit;
     QLineEdit *lineEdit;
     QPushButton *pushButton;
};
MyWidget::MyWidget(QWidget *parent)
     : QMainWindow(parent)
{
  resize(QSize(400, 300).expandedTo(minimumSizeHint()));
  pushButton = new QPushButton(this);
  pushButton->setGeometry(QRect(9, 268, 382, 23));
  lineEdit = new QLineEdit(this);
  lineEdit->setGeometry(QRect(9, 244, 382, 18));
  myTextEdit = new MyTextEdit(this);
  myTextEdit->setGeometry(QRect(9, 9, 382, 229));
}
MyWidget::~MyWidget()
{
}
int main(int argc, char **argv)
{
     QApplication app(argc, argv);
     MyWidget mywidget;
     mywidget.show();
     return app.exec();
}

#include <QApplication>
#include <QTextEdit>
#include <QKeyEvent>
class MyTextEdit:public QTextEdit
{
public:
     MyTextEdit(QWidget *parent = 0);
     ~MyTextEdit();
private:
     void keyPressEvent(QKeyEvent *event);
     void keyReleaseEvent(QKeyEvent *event);
};
MyTextEdit::MyTextEdit(QWidget *parent)
     :QTextEdit(parent)
{
}
MyTextEdit::~MyTextEdit()
{
}
void MyTextEdit::keyPressEvent(QKeyEvent *event)
{
     if (event->key() == Qt::Key_Tab)
     {
           event->ignore();
     }
     else
     {
           QTextEdit::keyPressEvent(event);
     }
}
void MyTextEdit::keyReleaseEvent(QKeyEvent *event)
{
     if (event->key() == Qt::Key_Tab)
     {
           event->ignore();
     }
     else
     {
           QTextEdit::keyReleaseEvent(event);
     }
}
int main(int argc, char **argv)
{
     QApplication app(argc, argv);
     MyTextEdit textedit;
     textedit.resize(600, 400);
     textedit.show();
     return app.exec();
}