我的目标是为我的应用程序创建一个自定义的最大化按钮，我还想在Windows 11上的按钮上触发快照布局菜单。为此，我按照here的指南操作，但它不起作用。
以下是示例代码，出于测试目的，我选择了一个矩形{point（0，0），size（200，200）}，当鼠标位于其上方时，我收到WM_NCHITTEST消息，我按照指南中的说明返回HTMAXBUTTON，但捕捉布局菜单未显示。

#include <stdio.h>

#ifndef UNICODE
#define UNICODE
#endif

#include <windows.h>
#include <windowsx.h>

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

int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)
{
    // Register the window class.
    const wchar_t CLASS_NAME[]  = L"Sample Window Class";

    WNDCLASS wc = { };

    wc.lpfnWndProc   = WindowProc;
    wc.hInstance     = hInstance;
    wc.lpszClassName = CLASS_NAME;

    RegisterClass(&wc);

    // Create the window.

    HWND hwnd = CreateWindowEx(
        0,                              // Optional window styles.
        CLASS_NAME,                     // Window class
        L"Test Window",    // Window text
        WS_OVERLAPPEDWINDOW,            // Window style

        // Size and position
        CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,

        NULL,       // Parent window
        NULL,       // Menu
        hInstance,  // Instance handle
        NULL        // Additional application data
        );

    if (hwnd == NULL)
    {
        return 0;
    }

    ShowWindow(hwnd, nCmdShow);

    // Run the message loop.

    MSG msg = { };
    while (GetMessage(&msg, NULL, 0, 0) > 0)
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0;
}

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;

    case WM_PAINT:
    {
        PAINTSTRUCT ps;
        HDC hdc = BeginPaint(hwnd, &ps);

        // All painting occurs here, between BeginPaint and EndPaint.

        FillRect(hdc, &ps.rcPaint, (HBRUSH) (COLOR_WINDOW+1));

        EndPaint(hwnd, &ps);
    }
    return 0;

    case WM_NCHITTEST:
    {
        // Get the point in screen coordinates.
        // GET_X_LPARAM and GET_Y_LPARAM are defined in windowsx.h
        POINT point = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
        // Map the point to client coordinates.
        ::MapWindowPoints(nullptr, hwnd, &point, 1);
        RECT maximizeRect {0, 0, 200, 200};
        // If the point is in your maximize button then return HTMAXBUTTON
        if (::PtInRect(&maximizeRect, point))
        {
            printf("maxmize button rect %d\n", rand());
            fflush(stdout);
            return HTMAXBUTTON;
        }

        break;
    }

    }
    return DefWindowProc(hwnd, uMsg, wParam, lParam);
}