Qt如何实现在光标出现时调用某个函数
qt怎样实现在将鼠标点进lineEdit、textEdit时，即光标出现时调用某个函数。我想在光标出现在lineEdit中时调用一个键盘，实现类似手机发短信时效果(点下后出现键盘)？ Qt 光标
[解决办法]

#include <QtCore>
#include <QtGui>

class MyLineEdit : public QLineEdit {
public:
    MyLineEdit(QWidget *parent = NULL) : QLineEdit(parent) {}
protected:
    virtual void focusInEvent(QFocusEvent *event) {
        qDebug()<<"MyLineEdit";
        QLineEdit::focusInEvent(event);
    }
};

class MyTextEdit : public QTextEdit {
public:
    MyTextEdit(QWidget *parent = NULL) : QTextEdit(parent) {}
protected:
    virtual void focusInEvent(QFocusEvent *event) {
        qDebug()<<"MyTextEdit";
        QTextEdit::focusInEvent(event);
    }
};

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);

    QDialog *dlg = new QDialog();
    QLayout *layout = new QVBoxLayout(dlg);
    QLineEdit *lineEdit = new MyLineEdit(dlg);
    layout->addWidget(lineEdit);
    QTextEdit *textEdit = new MyTextEdit(dlg);
    layout->addWidget(textEdit);
    dlg->setLayout(layout);
    dlg->show();
    
    return app.exec();
}