#include "form8.h" #include "ui_form8.h" Form8::Form8(QWidget *parent) : QWidget(parent), ui(new Ui::Form8) { ui->setupUi(this); ui->Form8label->setWordWrap(true); // ui->Form8label->setMinimumWidth(400); // ui->Form8label->setMaximumWidth(400); } Form8::~Form8() { delete ui; } bool Form8::event(QEvent *evt) { qDebug()<<"事件分发"<type(); if(evt->type() == QEvent::KeyPress){ QKeyEvent *keyEvent = static_cast(evt); if(keyEvent->key() == Qt::Key_Return){ // ui->Form8label->setText(tr("按下 %1 键").arg(keyEvent->text())); qDebug()<text()); } // return false; // 不分发此事件 } return QWidget::event(evt); } void Form8::keyPressEvent(QKeyEvent *event) { QString s = ui->Form8label->text(); // 如果按下的是换行 if(event->key() == Qt::Key_Enter){ s+="\r\n"; }else if(event->key() == Qt::Key_Space){ s.clear(); }else if(event->key() == Qt::Key_Backspace){ // s.remove(s.size()-1,1); s.chop(1); } else{ s += event->text(); } ui->Form8label->setText(s); }