단순 CEF 프로젝트가 페이지를 표시하지 않음

C ++에서 CEF를 사용해보십시오. 간단한 프로젝트 만들기 :

#include <Windows.h>

#include <include/cef_app.h>
#include <include/cef_client.h>
#include <include/wrapper/cef_helpers.h>

class Handler : public CefClient {
public:

private:
    IMPLEMENT_REFCOUNTING(Handler);
};

class App : public CefApp, public CefBrowserProcessHandler {
public:
    CefRefPtr<CefBrowserProcessHandler> GetBrowserProcessHandler() override {
        return this;
    }

    void OnContextInitialized() override {
        CEF_REQUIRE_UI_THREAD();

        CefRefPtr<Handler> handler(new Handler);

        CefWindowInfo wndInfo;
        wndInfo.SetAsPopup(0, "Hello world");

        CefBrowserSettings settings;

        std::string url{ "https://stackoverflow.com" };
        CefBrowserHost::CreateBrowser(wndInfo, handler, url, settings, nullptr, nullptr);
    }

private:
    IMPLEMENT_REFCOUNTING(App);
};

int APIENTRY wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) {
    CefEnableHighDPISupport();

    CefMainArgs args(hInstance);
    int ec = CefExecuteProcess(args, nullptr, nullptr);
    if (ec >= 0) {
        return ec;
    }

    CefSettings settings;

    CefRefPtr<App> app(new App);

    CefInitialize(args, settings, app, nullptr);

    CefRunMessageLoop();

    CefShutdown();

    return 0;
}

프로젝트 폴더에는 cefclient의 모든 파일이 포함됩니다 (공식 cef 예제)

08.04.2020  12:21         2 133 001 cef.pak
08.04.2020  12:21           654 037 cef_100_percent.pak
08.04.2020  12:21           808 292 cef_200_percent.pak
08.04.2020  12:21         1 772 827 cef_extensions.pak
08.04.2020  12:21         1 110 016 chrome_elf.dll
08.04.2020  12:21         4 346 120 d3dcompiler_47.dll
08.04.2020  12:21         7 015 266 devtools_resources.pak
08.04.2020  12:21        10 505 952 icudtl.dat
08.04.2020  12:21       158 316 032 libcef.dll
08.04.2020  12:21           391 168 libEGL.dll
08.04.2020  12:21        10 552 832 libGLESv2.dll
08.04.2020  12:44    <DIR>          locales
09.04.2020  18:14           613 247 main.obj
09.04.2020  18:14         3 948 032 Project1.exe
08.04.2020  12:21           606 640 snapshot_blob.bin
08.04.2020  12:49    <DIR>          swiftshader
08.04.2020  12:21           923 968 v8_context_snapshot.bin
09.04.2020  18:14           519 168 vc142.idb
09.04.2020  18:14           847 872 vc142.pdb

빈 페이지가 표시되는 이유는 무엇입니까?