我写了一个小程序，创建一个与编辑框关联的UpDown控件。
我用一个资源脚本进行了测试，问题是一样的：向上箭头减少数字，向下箭头增加数字。我不知道我的错误在哪里。
我用Visual Studio 2022在Windows 11机器上编写了这个程序。
下面是我的代码：

#include <Windows.h>
#include <CommCtrl.h>
#include "resource.h"

#pragma comment(lib, "comctl32.lib")

static HWND et1, ud1;
static HINSTANCE hinstancia;

LRESULT OnDestroy(HWND hwnd, WPARAM wp, LPARAM lp)
{
    PostQuitMessage(0);
    return 0;
}
/////////////////////////////////////////////////////////////////////
LRESULT OnCreate(HWND hwnd, WPARAM wp, LPARAM lp)
{
    et1 = CreateWindowEx(0, L"edit", L"", WS_CHILD | WS_VISIBLE, 10, 10, 40, 16, hwnd, NULL, hinstancia, NULL);
    if (!et1)
    {
        MessageBox(NULL, L"I was unable to create the input control", L"Error", MB_OK);
        exit(0);
    }
    ud1 = CreateWindowEx(0, L"MSCTLS_UPDOWN32", L"", WS_CHILD | WS_VISIBLE | UDS_ALIGNRIGHT | UDS_ARROWKEYS | UDS_AUTOBUDDY | UDS_SETBUDDYINT, 50, 10, 12, 16, hwnd, NULL, hinstancia, NULL);
    if (!ud1)
    {
        MessageBox(NULL, L"I was unable to create the up down control", L"Error", MB_OK);
        exit(0);
    }
    return 0;
}
/////////////////////////////////////////////////////////////////////
LRESULT CALLBACK wndproc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
{
    switch (msg)
    {
    case WM_DESTROY: return OnDestroy(hwnd, wp, lp);
    case WM_CREATE: return OnCreate(hwnd, wp, lp);
    default: return DefWindowProc(hwnd, msg, wp, lp);
    }
    
}
////////////////////////////////////////////////////////////////////////////////////////////////
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
    INITCOMMONCONTROLSEX ice;
    WNDCLASSEX wc;
    HWND hwnd;
    MSG msg;
    hinstancia = hInstance;
    ice.dwSize = sizeof(INITCOMMONCONTROLSEX);
    ice.dwICC = ICC_UPDOWN_CLASS;
    InitCommonControlsEx(&ice);
    ZeroMemory(&wc, sizeof(WNDCLASSEX));
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.hInstance = hInstance;
    wc.lpszClassName = L"Test1";
    wc.hbrBackground = (HBRUSH) GetStockObject(GRAY_BRUSH);
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
    wc.lpfnWndProc = wndproc;
    wc.style = CS_HREDRAW | CS_VREDRAW;
    if (!RegisterClassEx(&wc))
    {
        MessageBox(NULL, L"Window class was not registered", L"Error", MB_OK);
        return 0;
    }
    hwnd = CreateWindowEx(WS_EX_APPWINDOW, L"Test1", L"Sample", WS_CAPTION | WS_SYSMENU | WS_VISIBLE,
        CW_USEDEFAULT, CW_USEDEFAULT, 400, 300, NULL, NULL, hInstance, NULL);
    if (!hwnd)
    {
        MessageBox(NULL, L"Window was not createed", L"Error", MB_OK);
        return 0;
    }
    ShowWindow(hwnd, nShowCmd);
    UpdateWindow(hwnd);
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);  
    }
    return (int)msg.wParam;
}

有人能告诉我我做错了什么吗？
我希望用向上箭头递增数字，用向下箭头递减数字。