Qt-Qt之剪切板、热键应用(QClipboard、RegisterHotKey)

 

.pro

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    main.cpp \
    mainwindow.cpp

HEADERS += \
    mainwindow.h

FORMS += \
    mainwindow.ui

LIBS += \
    -lUser32

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

 main.cpp

#include "mainwindow.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}

 mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <windows.h>

#include <QMainWindow>
#include <QClipboard>
#include <QMimeData>
#include <QDebug>
#include <QTimer>

// 热键id
#define HOT_KEY_CTRL_2 0
#define HOT_KEY_CTRL_3 1

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

    bool nativeEvent(const QByteArray &eventType, void *message, long *result);
private slots:
    void on_pushButton_clicked();

    void on_pushButton_2_clicked();

    void on_pushButton_3_clicked();

    void on_pushButton_6_clicked();

    void on_pushButton_4_clicked();

private:
    void on_ClipboardChanged();
    void on_ClipboardAdd();
private:
    Ui::MainWindow *ui;
    QClipboard *m_pClipboard = NULL;
    bool m_bSwitch = false;
    bool m_bReadFinish = false;
    QString m_Txt = "";
    QTimer *m_pTimer = NULL;
};
#endif // MAINWINDOW_H

 mainwindow.cpp

// 开启监听Alt + 2
// 关闭监听Alt + 3
// 开启后可以复制、粘贴时，把\号改为/号。

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    setWindowTitle(QStringLiteral("Qt之剪切板、热键应用"));

    QClipboard *m_pClipboard = QApplication::clipboard();   //获取系统剪贴板指针
    connect(m_pClipboard, &QClipboard::changed, this, &MainWindow::on_ClipboardChanged);

    if (!RegisterHotKey(HWND(winId()), HOT_KEY_CTRL_2, MOD_ALT, 0x32))// MOD_ALT | MOD_CONTROL
        qDebug() << "注册热键 ALT + 2";
    if (!RegisterHotKey(HWND(winId()), HOT_KEY_CTRL_3, MOD_ALT, 0x33))
        qDebug() << "注册热键 ALT + 3";
    //
    m_pTimer = new QTimer(this);
    m_pTimer->setSingleShot(false);
    connect(m_pTimer, &QTimer::timeout, this, &MainWindow::on_ClipboardAdd);
    m_pTimer->start(10);
}

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

bool MainWindow::nativeEvent(const QByteArray &eventType, void *message, long *result)
{
    Q_UNUSED(eventType);
    Q_UNUSED(result);
    MSG* msg = static_cast<MSG*>(message);
    if (msg->message == WM_HOTKEY)
    {
        switch (msg->wParam) {
        case HOT_KEY_CTRL_2:
            qDebug() << "触发了： ALT + 2";
            m_bSwitch = true;
        break;
        case HOT_KEY_CTRL_3:
            qDebug() << "触发了： ALT + 3";
            m_bSwitch = false;
        break;
        default:
            qDebug() << "被注入了其他热键.";
        }
        return true;
    }
    return false;
}

void MainWindow::on_ClipboardChanged()
{
    const QMimeData *mimeData = m_pClipboard->mimeData();
    if (mimeData->hasImage())
    {
        /* 获取剪切板图像数据。 */
        QPixmap pixmap = qvariant_cast<QPixmap>(mimeData->imageData());
        //
    }
    else if (mimeData->hasHtml())
    {
        /* 获取剪切板html数据。 */
        QString html = mimeData->html();
        //
    }
    else if (mimeData->hasText()) {
        /* 获取剪切板纯文本数据。 */
        QString text = mimeData->text();
        //
        if (m_bSwitch)
        {
            text = text.replace("\\", "/");
            ui->textEdit->setText(text);
            m_bReadFinish = true;
            m_Txt = text;
        }
    }
    else {
        qDebug() << "Cannot display data";
    }
}

void MainWindow::on_ClipboardAdd()
{
    if (m_bReadFinish && m_Txt != "")
    {
        m_bReadFinish = false;
        m_pClipboard->setText(m_Txt);
    }
}

void MainWindow::on_pushButton_clicked()
{
    m_bSwitch = true;
}

void MainWindow::on_pushButton_2_clicked()
{
    m_bSwitch = false;
}

void MainWindow::on_pushButton_3_clicked()
{
    m_pClipboard->setText("AAA");
}

void MainWindow::on_pushButton_6_clicked()
{
    ui->textEdit->setText(m_pClipboard->text());
}

void MainWindow::on_pushButton_4_clicked()
{
    QMimeData mimeData;
    mimeData.setImageData(QPixmap("hello.png")); // 图像数据
    // mimeData.setHtml("<h1>Heool world.</h1>"); // Html数据
    // mimeData.setText("Hello world."); // 纯文本数据
    m_pClipboard->setMimeData(&mimeData);
}

 mainwindow.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>859</width>
    <height>372</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <widget class="QPushButton" name="pushButton">
    <property name="geometry">
     <rect>
      <x>640</x>
      <y>10</y>
      <width>80</width>
      <height>20</height>
     </rect>
    </property>
    <property name="text">
     <string>开启监听</string>
    </property>
   </widget>
   <widget class="QPushButton" name="pushButton_2">
    <property name="geometry">
     <rect>
      <x>640</x>
      <y>30</y>
      <width>80</width>
      <height>20</height>
     </rect>
    </property>
    <property name="text">
     <string>关闭监听</string>
    </property>
   </widget>
   <widget class="QTextEdit" name="textEdit">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>10</y>
      <width>601</width>
      <height>241</height>
     </rect>
    </property>
   </widget>
   <widget class="QPushButton" name="pushButton_3">
    <property name="geometry">
     <rect>
      <x>640</x>
      <y>200</y>
      <width>120</width>
      <height>20</height>
     </rect>
    </property>
    <property name="text">
     <string>向剪切板写入TXT</string>
    </property>
   </widget>
   <widget class="QPushButton" name="pushButton_4">
    <property name="geometry">
     <rect>
      <x>640</x>
      <y>150</y>
      <width>120</width>
      <height>20</height>
     </rect>
    </property>
    <property name="text">
     <string>向剪切板写入图片</string>
    </property>
   </widget>
   <widget class="QPushButton" name="pushButton_6">
    <property name="geometry">
     <rect>
      <x>640</x>
      <y>220</y>
      <width>120</width>
      <height>20</height>
     </rect>
    </property>
    <property name="text">
     <string>读取剪切板TXT内容</string>
    </property>
   </widget>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>

  

翻译

搜索

复制