windows vs2022 MFC使用webview2嵌入网页

Microsoft Edge WebView2 控件允许在本机应用中嵌入 web 技术(HTML、CSS 以及 JavaScript)。 WebView2 控件使用 Microsoft Edge 作为绘制引擎，以在本机应用中显示 web 内容。

一、通过菜单“项目”-“管理NuGet程序包”，下载相关包

二、安装 Microsoft.Web.WebView2

   在“浏览”分页的左上角的搜索栏中，键入 Microsoft.Web.WebView2，选择对应的版本，然后点击按钮安装

三、安装Microsoft.Windows.ImplementationLibrary

在“浏览”分页的左上角的搜索栏中，键入 Microsoft.Windows.ImplementationLibrary，选择对应的版本，然后点击按钮安装

四、添加界面消息映射

在对话框界面右击，选择“类向导”

添加WM_CREATE和WM_SIZE消息：

五、添加代码

在MFCApplication1Dlg.h头文件中添加：

#include <iostream>
#include <wrl.h>
#include <wil/com.h>
#include "WebView2.h"

#include <string>
#include <vector>
using namespace std;
using namespace Microsoft::WRL;

// Pointer to WebViewController
static wil::com_ptr<ICoreWebView2Controller> webviewController = nullptr;

// Pointer to WebView window
static wil::com_ptr<ICoreWebView2> webview = nullptr;

在构造函数中添加：

CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);

在析构函数中添加：

CoUninitialize();

在OnSize函数中添加：

if (webviewController != nullptr) {
    RECT bounds;
    GetClientRect(&bounds);
    webviewController->put_Bounds(bounds);
};

在OnCreate函数中添加：

HWND hWnd = this->m_hWnd;

    // TODO:  在此添加您专用的创建代码
    // <-- WebView2 sample code starts here -->
    // Step 3 - Create a single WebView within the parent window
    // Locate the browser and set up the environment for WebView
    CreateCoreWebView2EnvironmentWithOptions(nullptr, nullptr, nullptr,
        Callback<ICoreWebView2CreateCoreWebView2EnvironmentCompletedHandler>(
            [hWnd](HRESULT result, ICoreWebView2Environment* env) -> HRESULT {

        // Create a CoreWebView2Controller and get the associated CoreWebView2 whose parent is the main window hWnd
        env->CreateCoreWebView2Controller(hWnd, Callback<ICoreWebView2CreateCoreWebView2ControllerCompletedHandler>(
            [hWnd](HRESULT result, ICoreWebView2Controller* controller) -> HRESULT {
            if (controller != nullptr) {
                webviewController = controller;
                webviewController->get_CoreWebView2(&webview);
            }

            // Add a few settings for the webview
            // The demo step is redundant since the values are the default settings
            wil::com_ptr<ICoreWebView2Settings> settings;
            webview->get_Settings(&settings);
            settings->put_IsScriptEnabled(TRUE);
            settings->put_AreDefaultScriptDialogsEnabled(TRUE);
            settings->put_IsWebMessageEnabled(TRUE);

            // Resize WebView to fit the bounds of the parent window
            RECT bounds;
            ::GetClientRect(hWnd, &bounds);
            webviewController->put_Bounds(bounds);

            // Schedule an async task to navigate to Bing
            webview->Navigate(L"https://www.bing.com/");

            // <NavigationEvents>
            // Step 4 - Navigation events
            // register an ICoreWebView2NavigationStartingEventHandler to cancel any non-https navigation
            EventRegistrationToken token;
            webview->add_NavigationStarting(Callback<ICoreWebView2NavigationStartingEventHandler>(
                [](ICoreWebView2* webview, ICoreWebView2NavigationStartingEventArgs* args) -> HRESULT {
                wil::unique_cotaskmem_string uri;
                args->get_Uri(&uri);
                std::wstring source(uri.get());
                if (source.substr(0, 5) != L"https") {
                    args->put_Cancel(true);
                }
                return S_OK;
            }).Get(), &token);
            // </NavigationEvents>

            // <Scripting>
            // Step 5 - Scripting
            // Schedule an async task to add initialization script that freezes the Object object
            webview->AddScriptToExecuteOnDocumentCreated(L"Object.freeze(Object);", nullptr);
            // Schedule an async task to get the document URL
            webview->ExecuteScript(L"window.document.URL;", Callback<ICoreWebView2ExecuteScriptCompletedHandler>(
                [](HRESULT errorCode, LPCWSTR resultObjectAsJson) -> HRESULT {
                LPCWSTR URL = resultObjectAsJson;
                //doSomethingWithURL(URL);
                return S_OK;
            }).Get());
            // </Scripting>

            // <CommunicationHostWeb>
            // Step 6 - Communication between host and web content
            // Set an event handler for the host to return received message back to the web content
            webview->add_WebMessageReceived(Callback<ICoreWebView2WebMessageReceivedEventHandler>(
                [](ICoreWebView2* webview, ICoreWebView2WebMessageReceivedEventArgs* args) -> HRESULT {
                wil::unique_cotaskmem_string message;
                args->TryGetWebMessageAsString(&message);
                // processMessage(&message);
                webview->PostWebMessageAsString(message.get());
                return S_OK;
            }).Get(), &token);

            // Schedule an async task to add initialization script that
            // 1) Add an listener to print message from the host
            // 2) Post document URL to the host
            webview->AddScriptToExecuteOnDocumentCreated(
                L"window.chrome.webview.addEventListener(\'message\', event => alert(event.data));" \
                L"window.chrome.webview.postMessage(window.document.URL);",
                nullptr);
            // </CommunicationHostWeb>

            return S_OK;
        }).Get());
        return S_OK;
    }).Get());