控件–GroupBox

使用WindowsAPI，创建GroupBox：

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

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

#define ID_GROUPBOX 101
#define ID_BUTTON 102

LRESULT CALLBACK WindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
    switch (message) {
    case WM_CREATE: {
        // 创建组框控件
        HWND hwndGroupBox = CreateWindowEx(0, L"BUTTON", L"Group Box",
            WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
            10, 10, 200, 100, // x, y, width, height
            hwnd, (HMENU)ID_GROUPBOX, NULL, NULL);

        // 创建按钮控件
        HWND hwndButton = CreateWindowEx(0, L"BUTTON", L"Click Me",
            WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
            20, 40, 150, 30, // x, y, width, height
            hwndGroupBox, (HMENU)ID_BUTTON, NULL, NULL);

        break;
    }
    case WM_COMMAND: {
        if (LOWORD(wParam) == ID_BUTTON) {
            MessageBox(hwnd, L"You clicked the button!", L"Notification", MB_OK);
        }
        break;
    }
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd, message, wParam, lParam);
    }
    return 0;
}

int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR, int nCmdShow) {
    // 初始化 Common Controls
    INITCOMMONCONTROLSEX icex;
    icex.dwSize = sizeof(icex);
    icex.dwICC = ICC_STANDARD_CLASSES; // 初始化标准控件类
    InitCommonControlsEx(&icex);

    // 创建窗口类
    WNDCLASS wc = {};
    wc.lpfnWndProc = WindowProc;
    wc.hInstance = hInstance;
    wc.lpszClassName = L"GroupBoxExample";
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);

    RegisterClass(&wc);

    // 创建窗口
    HWND hwnd = CreateWindowEx(
        0, L"GroupBoxExample", L"GroupBox Control Example",
        WS_OVERLAPPEDWINDOW | WS_VISIBLE,
        CW_USEDEFAULT, CW_USEDEFAULT, 300, 200,
        NULL, NULL, hInstance, NULL);

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

    return 0;
}

效果图：