回帖：[0603] 代码修改
Editor::Editor(QWidget *parent) : QTextEdit(parent)
{
action = new QAction(this);
action->setCheckable(true);
//Qt4
connect(action, SIGNAL(triggered()), this, SLOT(show()));
//Qt5
//connect(action, &QAction::triggered, this, &Editor::show);
connect(action, SIGNAL(triggered()), this, SLOT(setFocus()));

isUntitled = true;

//Qt4
connect(document(), SIGNAL(contentsChanged()), this, SLOT(documentWasModified()));
//Qt5
//connect(document(), &QTextDocument::contentsChanged, this, &Editor::documentWasModified);

setWindowIcon(QPixmap(":/images/document.png"));
setWindowTitle("[*]");
setAttribute(Qt::WA_DeleteOnClose);
}