Qt之简易截图工具

最新推荐文章于 2025-03-16 08:47:05 发布

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最新推荐文章于 2025-03-16 08:47:05 发布

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本文链接：https://blog.youkuaiyun.com/fukangwei_lite/article/details/117585070

版权

widget.h如下：

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include "QPixmap.h"
#include "QTimer.h"

namespace Ui {
    class Widget;
}

class Widget : public QWidget {
    Q_OBJECT
public:
    explicit Widget ( QWidget *parent = 0 );
    ~Widget();
private slots:
    void on_cut_screen_clicked();
    void changeValue();
private:
    Ui::Widget *ui;
    QPixmap pixmap;
    QTimer *timer;
};

#endif // WIDGET_H

widget.cpp如下：

#include "widget.h"
#include "ui_widget.h"
#include "QDesktopWidget.h"
#include "QPixmap.h"
#include "QFileDialog.h"
#include "QDesktopServices.h"
#include "QClipboard.h"

Widget::Widget ( QWidget *parent ) : QWidget ( parent ), ui ( new Ui::Widget ) {
    ui->setupUi ( this );
    timer = new QTimer();
    timer->setInterval ( 1000 ); /* 设置超时时间为1秒 */
    connect ( timer, SIGNAL ( timeout() ), this, SLOT ( changeValue() ) );
}

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

void Widget::on_cut_screen_clicked() {
    timer->start();
    this->hide(); /* 将当前窗口进行隐藏 */
    pixmap = QPixmap::grabWindow ( QApplication::desktop()->winId() );
    ui->label->setPixmap ( pixmap.scaled ( ui->label->size() ) );
    QString fileName = QFileDialog::getSaveFileName (
        this, "save file",
        QDesktopServices::storageLocation ( QDesktopServices::PicturesLocation ) );
    pixmap.save ( fileName );
    QClipboard *clipboard = QApplication::clipboard();
    clipboard->setPixmap ( pixmap );
}

void Widget::changeValue() {
    this->show(); /* 显示主窗口 */
    timer->stop();
}