如何在C++的WebBrowser中显示HTML文件

#include <windows.h>
#include <mshtml.h>
#include <exdisp.h>

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg)
    {
        case WM_CREATE:
        {
            // 创建WebBrowser控件
            IWebBrowser2* pWebBrowser = nullptr;
            CoCreateInstance(CLSID_WebBrowser, nullptr, CLSCTX_ALL, IID_IWebBrowser2, (void**)&pWebBrowser);

            // 设置WebBrowser控件的父窗口
            IOleObject* pOleObject = nullptr;
            pWebBrowser->QueryInterface(IID_IOleObject, (void**)&pOleObject);
            pOleObject->DoVerb(OLEIVERB_SHOW, nullptr, nullptr, 0, hwnd, nullptr);

            // 加载HTML文件
            VARIANT url;
            url.vt = VT_BSTR;
            url.bstrVal = SysAllocString(L"file:///C:/path/to/your/html/file.html");
            pWebBrowser->Navigate2(&url, nullptr, nullptr, nullptr, nullptr);

            // 释放资源
            SysFreeString(url.bstrVal);
            pOleObject->Release();
            pWebBrowser->Release();
            break;
        }
        case WM_DESTROY:
        {
            PostQuitMessage(0);
            break;
        }
        default:
            return DefWindowProc(hwnd, uMsg, wParam, lParam);
    }
    return 0;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    // 创建窗口
    const wchar_t CLASS_NAME[] = L"WebBrowserWindowClass";
    WNDCLASS wc = {};
    wc.lpfnWndProc = WindowProc;
    wc.hInstance = hInstance;
    wc.lpszClassName = CLASS_NAME;
    RegisterClass(&wc);
    HWND hwnd = CreateWindowEx(0, CLASS_NAME, L"WebBrowser Window", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, nullptr, nullptr, hInstance, nullptr);
    if (hwnd == nullptr)
    {
        return 0;
    }

    // 显示窗口
    ShowWindow(hwnd, nCmdShow);

    // 消息循环
    MSG msg = {};
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0;
}