使用Qt实现网页自动刷新工具 示例demo

#include "widget.h" #include "ui_widget.h" #include "Windows.h" #include <QDebug> #include <QThread> #include <QTimer> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); myTimer = new QTimer(this); //刷新按钮 信号槽 connect(ui->beginButton,&QPushButton::clicked,this,&Widget::beginRefresh); //停止按钮 信号槽 connect(ui->stopButton,&QPushButton::clicked,this,&Widget::stopRefresh); } void Widget::beginRefresh(){ QString winTitle = ui->htmlWinTitle->text(); qDebug() << winTitle; char* ch = winTitle.toUtf8().data(); //刷新网页窗口的标题：【无欲则刚】30岁回农村 - CSDN博客 - 2345加速浏览器 9.5 qDebug() << ch; //这里必须转换！不转换会报错: cannot convert 'char*' to 'LPCWSTR {aka const wchar_t*}' for argument '2' to 'HWND__* FindWindowW(LPCWSTR, LPCWSTR)' LPCWSTR str = (LPCWSTR)ch; //需要Windows.h头文件 HWND win = ::FindWindow(NULL, str); if(win != NULL){ qDebug() << "找到窗口："+winTitle; }else{ qDebug() << "没有找到窗口!!!"; return; } if(myTimer->timerId()!=-1){ //定时器在运行，先关掉 myTimer->stop(); } refresh(win); //设置定时器 connect(myTimer,&QTimer::timeout,[=](){ refresh(win); }); //每3秒刷新一次网页 myTimer->start(3000); } void Widget::stopRefresh(){ myTimer->stop(); } void Widget::refresh(HWND win){ //将指定的窗口设置到最前面并处于激活状态，不然当没有在最前面是不会刷新的。 SetForegroundWindow(win); PostMessage(win, WM_KEYDOWN, VK_F5,1); Sleep(50); PostMessage(win, WM_KEYUP, VK_F5,1); } Widget::~Widget() { delete ui; }