如何在工具栏外部使用Win32工具栏标准位图？

#include <windows.h>
#include <commctrl.h>

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    // 注册窗口类
    WNDCLASSEX wc = {0};
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.lpfnWndProc = WindowProc;
    wc.hInstance = hInstance;
    wc.lpszClassName = TEXT("ToolboxWindowClass");
    RegisterClassEx(&wc);

    // 创建窗口
    HWND hwnd = CreateWindowEx(
        0,
        TEXT("ToolboxWindowClass"),
        TEXT("Win32 Toolbox Example"),
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, 500, 400,
        NULL, NULL, hInstance, NULL);

    // 创建工具栏
    HWND hwndToolbar = CreateWindowEx(
        0, TOOLBARCLASSNAME, NULL,
        WS_CHILD | WS_VISIBLE | TBSTYLE_WRAPABLE, 0, 0, 0, 0,
        hwnd, NULL, hInstance, NULL);

    // 加载标准位图
    SendMessage(hwndToolbar, TB_BUTTONSTRUCTSIZE, sizeof(TBBUTTON), 0);
    SendMessage(hwndToolbar, TB_SETBITMAPSIZE, 0, MAKELONG(16, 16));
    SendMessage(hwndToolbar, TB_ADDBITMAP, 0, (LPARAM)HINST_COMMCTRL);

    // 添加按钮
    TBBUTTON tbButtons[3] = {0};
    tbButtons[0].iBitmap = STD_FILENEW;
    tbButtons[0].idCommand = IDM_FILE_NEW;
    tbButtons[0].fsState = TBSTATE_ENABLED;
    tbButtons[0].fsStyle = TBSTYLE_BUTTON;
    
    tbButtons[1].iBitmap = STD_FILEOPEN;
    tbButtons[1].idCommand = IDM_FILE_OPEN;
    tbButtons[1].fsState = TBSTATE_ENABLED;
    tbButtons[1].fsStyle = TBSTYLE_BUTTON;
    
    tbButtons[2].iBitmap = STD_FILESAVE;
    tbButtons[2].idCommand = IDM_FILE_SAVE;
    tbButtons[2].fsState = TBSTATE_ENABLED;
    tbButtons[2].fsStyle = TBSTYLE_BUTTON;

    SendMessage(hwndToolbar, TB_ADDBUTTONS, sizeof(tbButtons) / sizeof(TBBUTTON), (LPARAM)&tbButtons);

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

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

    return (int)msg.wParam;
}

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg)
    {
    case WM_COMMAND:
        // 处理按钮点击事件
        if (HIWORD(wParam) == 0 && LOWORD(wParam) == IDM_FILE_NEW)
        {
            // 点击了新建按钮
            MessageBox(hwnd, TEXT("New button clicked!"), TEXT("Button Clicked"), MB_OK);
        }
        else if (HIWORD(wParam) == 0 && LOWORD(wParam) == IDM_FILE_OPEN)
        {
            // 点击了打开按钮
            MessageBox(hwnd, TEXT("Open button clicked!"), TEXT("Button Clicked"), MB_OK);
        }
        else if (HIWORD(wParam) == 0 && LOWORD(wParam) == IDM_FILE_SAVE)
        {
            // 点击了保存按钮
            MessageBox(hwnd, TEXT("Save button clicked!"), TEXT("Button Clicked"), MB_OK);
        }
        break;

    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    
    default:
        return DefWindowProc(hwnd, uMsg, wParam, lParam);
    }

    return 0;
}