键盘最大化

/* */

#ifndef WIDGET_H
#define WIDGET_H

#include

QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
Q_OBJECT

public:
Widget(QWidget *parent = nullptr);
~Widget();

private:
Ui::Widget ui;
protected:
void keyPressEvent(QKeyEvent event);
void keyReleaseEvent(QKeyEvent* event);

};
#endif // WIDGET_H

//

#include “widget.h”
#include “ui_widget.h”
#include

Widget::Widget(QWidget *parent)

QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
}

Widget::~Widget()
{
delete ui;
}

void Widget::keyPressEvent(QKeyEvent* event)
{
if(event ->modifiers() == Qt::ControlModifier)
{
if(event->key() == Qt::Key_M)
setWindowState(Qt::WindowMaximized);
}
else
setWindowState(Qt::WindowMaximized);
}