QT5 通过 webview2 加载网页

官方文档参考：https://learn.microsoft.com/zh-cn/microsoft-edge/webview2/get-started/win32

Webview2依赖的头文件和库

头文件主要为：WebView2和WixLibrary，存储在include/external

库主要为：WebView2LoaderStatic.lib和WebView2Loader.dll，存储在lib/external

初始化项目加载webview2

CMakeLists文件

#工程名project(uXXXXSoftware)#cmake最低版本cmake_minimum_required(VERSION 3.17)#设定cmake模块的路径set(CMAKE_MODULE_PATH${PROJECT_SOURCE_DIR}/cmake # 项目cmake${PROJECT_SOURCE_DIR}/cmake/base # 通用cmake${CMAKE_MODULE_PATH})#加载配置项include(set_env)#加载项目配置include(init_project)#加载编译配置include(set_compile_arg)

base/set_env.cmake

message(STATUS "====================set_env.cmake===================")# 处理编译字符集问题add_compile_options("$<$:/utf-8>")add_compile_options("$<$:/utf-8>")#C++标准set(CMAKE_CXX_STANDARD 11)# 开启QT用于预处理的组件set(CMAKE_AUTOMOC ON)set(CMAKE_AUTORCC ON)set(CMAKE_AUTOUIC ON)#设置全局系统变量set(PROJECT_EXTERNAL_DIR "D:/MyCPP")set(PROJECT_EXTERNAL_INCLUDE_DIR "${PROJECT_EXTERNAL_DIR}/include/external")set(PROJECT_EXTERNAL_LIB_DIR "${PROJECT_EXTERNAL_DIR}/lib/external")message(STATUS "PROJECT_EXTERNAL_INCLUDE_DIR is ${PROJECT_EXTERNAL_INCLUDE_DIR}")message(STATUS "PROJECT_EXTERNAL_LIB_DIR is ${PROJECT_EXTERNAL_LIB_DIR}")#配置QT位置message(STATUS "CMAKE_SYSTEM_NAME is ${CMAKE_SYSTEM_NAME}")if (CMAKE_SYSTEM_NAME MATCHES "Windows")#下面是Windows下Qt的默认前缀set(CMAKE_PREFIX_PATH "D:/Library/Qt5.14.2/5.14.2/msvc2017_64/lib/cmake")elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64" AND CMAKE_SYSTEM_NAME MATCHES "Linux")#下面是aarch64 Linux下Qt的默认前缀set(CMAKE_PREFIX_PATH /opt/Qt5.14.2_aarch64/)elseif (CMAKE_SYSTEM_NAME MATCHES "Linux")#下面是Linux x64下Qt的默认前缀set(CMAKE_PREFIX_PATH /opt/Qt5.14.2/5.14.2/gcc_64)endif ()message(STATUS "CMAKE_PREFIX_PATH is ${CMAKE_PREFIX_PATH}")message(STATUS "====================set_env.cmake end===================")

init_project.cmake

message(STATUS "====================init_project.cmake===================")# 查找QT的模块find_package(Qt5 COMPONENTSCoreGuiWidgetsREQUIRED)#外部头文件的路径include_directories(SYSTEM${PROJECT_EXTERNAL_INCLUDE_DIR})#外部库文件的路径link_directories(${PROJECT_EXTERNAL_LIB_DIR})# 把目录Packages/MainFrame/src下面的所有文件作为变量存储aux_source_directory(Packages/MainFrame/src SOURCES)# 添加源文件add_executable(uXXXXSoftware ${SOURCES})# 添加模块target_link_libraries(uXXXXSoftware Qt5::CoreQt5::GuiQt5::WidgetsWebView2LoaderStatic)message(STATUS "====================init_project.cmake end===================")

base/set_compile_arg.cmake

message(STATUS "====================set_compile_arg.cmake===================")# 默认的编译配置（可选）if (WIN32 AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)set(DEBUG_SUFFIX)if (MSVC AND CMAKE_BUILD_TYPE MATCHES "Debug")set(DEBUG_SUFFIX "d")endif ()set(QT_INSTALL_PATH "${CMAKE_PREFIX_PATH}")if (NOT EXISTS "${QT_INSTALL_PATH}/bin")set(QT_INSTALL_PATH "${QT_INSTALL_PATH}/..")if (NOT EXISTS "${QT_INSTALL_PATH}/bin")set(QT_INSTALL_PATH "${QT_INSTALL_PATH}/..")endif ()endif ()if (EXISTS "${QT_INSTALL_PATH}/plugins/platforms/qwindows${DEBUG_SUFFIX}.dll")add_custom_command(TARGET ${PROJECT_NAME} POST_BUILDCOMMAND ${CMAKE_COMMAND} -E make_directory"$/plugins/platforms/")add_custom_command(TARGET ${PROJECT_NAME} POST_BUILDCOMMAND ${CMAKE_COMMAND} -E copy"${QT_INSTALL_PATH}/plugins/platforms/qwindows${DEBUG_SUFFIX}.dll""$/plugins/platforms/")endif ()foreach (QT_LIB Core Gui Widgets)add_custom_command(TARGET ${PROJECT_NAME} POST_BUILDCOMMAND ${CMAKE_COMMAND} -E copy"${QT_INSTALL_PATH}/bin/Qt5${QT_LIB}${DEBUG_SUFFIX}.dll""$")endforeach (QT_LIB)endif ()message(STATUS "====================set_compile_arg.cmake end===================")

main函数

#pragma execution_character_set("utf-8")#include #include #include "main_windows.h"int main(int argc, char *argv[]) {QApplication a(argc, argv);//设置字体QFont font;font.setFamily("Microsoft Yahei UI");font.setPixelSize(13);a.setFont(font);MainWindow mainWindow;mainWindow.show();return QApplication::exec();}

MainWindow函数

#include "main_windows.h"#include "main_windows_layout.h"#include "web_display_widget.h"MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) {this->setWindowTitle("XXXX");this->resize(1024, 960);QWidget* centralWidget = new QWidget(this);auto webview2Widget = new WebDisplayWidget(centralWidget);webview2Widget->resize(1024, 960);this->setCentralWidget(centralWidget);}

WebDisplayWidget，显示web的widget核心函数
web_display_widge.h

#pragma execution_character_set("utf-8")#include #include #include "WixLibrary/wil/com.h"#include "WebView2/WebView2.h"class WebDisplayWidget : public QWidget {public:WebDisplayWidget(QWidget *parent = nullptr);~WebDisplayWidget() override;public:HRESULT OnEnvironmentCompleted(HRESULT result, ICoreWebView2Environment *env);HRESULT OnControllerCompleted(HRESULT result, ICoreWebView2Controller *controller);HRESULT OnNavigationStarting(ICoreWebView2 *sender, ICoreWebView2NavigationStartingEventArgs *args);HRESULT OnNavigationCompleted(ICoreWebView2 *sender, ICoreWebView2NavigationCompletedEventArgs *args);HRESULT OnWebResourceRequested(ICoreWebView2 *sender, ICoreWebView2WebResourceRequestedEventArgs *args);private:void InitWebView2();private:wil::com_ptr m_webViewController;wil::com_ptr m_webView;EventRegistrationToken m_navigationStartingToken;EventRegistrationToken m_navigationCompletedToken;EventRegistrationToken m_webResourceRequestedToken;};

web_display_widget.cpp

#include "web_display_widget.h"WebDisplayWidget::WebDisplayWidget(QWidget *parent) : QWidget(parent) {InitWebView2();}WebDisplayWidget::~WebDisplayWidget() {}void WebDisplayWidget::InitWebView2() {CreateCoreWebView2EnvironmentWithOptions(nullptr, nullptr, nullptr, Microsoft::WRL::Callback( [this](HRESULT result, ICoreWebView2Environment *env) -> HRESULT { return OnEnvironmentCompleted(result, env); } ).Get());}HRESULT WebDisplayWidget::OnEnvironmentCompleted(HRESULT result, ICoreWebView2Environment *env) {env->CreateCoreWebView2Controller(reinterpret_cast(this->winId()),Microsoft::WRL::Callback([this](HRESULT result, ICoreWebView2Controller *controller) -> HRESULT {return OnControllerCompleted(result, controller);}).Get());return S_OK;}HRESULT WebDisplayWidget::OnControllerCompleted(HRESULT result, ICoreWebView2Controller *controller) {if (controller == nullptr) {return S_FALSE;}//初始化webview2的依赖对象m_webViewController = controller;m_webViewController->get_CoreWebView2(&m_webView);//定义窗口RECT rect = {0, 0, this->width(), this->height()};m_webViewController->put_Bounds(rect);//导航地址m_webView->Navigate(L"https://www.baidu.com");//开始m_webView->add_NavigationStarting(Microsoft::WRL::Callback([this](ICoreWebView2 *webview, ICoreWebView2NavigationStartingEventArgs *args) -> HRESULT {return OnNavigationStarting(webview, args);}).Get(), &m_navigationStartingToken);//完成m_webView->add_NavigationCompleted(Microsoft::WRL::Callback([this](ICoreWebView2 *webview, ICoreWebView2NavigationCompletedEventArgs *args) -> HRESULT {return OnNavigationCompleted(webview, args);}).Get(), &m_navigationCompletedToken);m_webView->add_WebResourceRequested(Microsoft::WRL::Callback([this](ICoreWebView2 *webview, ICoreWebView2WebResourceRequestedEventArgs *args) -> HRESULT {return OnWebResourceRequested(webview, args);}).Get(), &m_webResourceRequestedToken);return 0;}HRESULT WebDisplayWidget::OnNavigationStarting(ICoreWebView2 *sender, ICoreWebView2NavigationStartingEventArgs *args) {return S_OK;}HRESULTWebDisplayWidget::OnNavigationCompleted(ICoreWebView2 *sender, ICoreWebView2NavigationCompletedEventArgs *args) {return S_OK;}HRESULTWebDisplayWidget::OnWebResourceRequested(ICoreWebView2 *sender, ICoreWebView2WebResourceRequestedEventArgs *args) {return S_OK;}