控件–SysStatusBar

使用WindowsAPI，创建SysStatusBar控件：

#include <windows.h>
#include <commctrl.h>
#pragma comment(lib, "comctl32.lib")

HINSTANCE hInst;
HWND hwndStatusBar;

void InitializeStatusBar(HWND hwndParent) 
{
    hwndStatusBar = CreateWindowEx(
        0, STATUSCLASSNAME, NULL,
        WS_CHILD | WS_VISIBLE | SBARS_SIZEGRIP,
        0, 0, 0, 0,  // 初始位置和尺寸，将在 WM_SIZE 中调整
        hwndParent, (HMENU)1, hInst, NULL);

    int parts[] = { 150, 300, -1 };  // 修改部分宽度，使其更适合文本
    SendMessage(hwndStatusBar, SB_SETPARTS, (WPARAM)3, (LPARAM)parts);

    // 设置每一部分的文本，并尝试居中
    SendMessage(hwndStatusBar, SB_SETTEXT, 0, (LPARAM)L"Part 1");
    SendMessage(hwndStatusBar, SB_SETTEXT, 1, (LPARAM)L"Part 2");
    SendMessage(hwndStatusBar, SB_SETTEXT, 2 | SBT_NOBORDERS, (LPARAM)L"Part 3");
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) 
{
    switch (message) {
    case WM_CREATE:
        InitializeStatusBar(hwnd);
        break;
    case WM_SIZE:
    {
        // 在窗口大小改变时调整状态栏的大小和位置
        RECT rc;
        GetClientRect(hwnd, &rc);
        MoveWindow(hwndStatusBar, 0, rc.bottom - 20, rc.right, 20, TRUE); // 设置状态栏位置为窗口底部
    }
        break;

    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd, message, wParam, lParam);
    }
    return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR szCmdLine, int iCmdShow) 
{
    INITCOMMONCONTROLSEX icex;
    icex.dwSize = sizeof(INITCOMMONCONTROLSEX);
    icex.dwICC = ICC_BAR_CLASSES;  // 状态栏类
    InitCommonControlsEx(&icex);

    hInst = hInstance;
    WNDCLASS wc = {};
    wc.lpfnWndProc = WndProc;
    wc.hInstance = hInstance;
    wc.lpszClassName = L"StatusBar";
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_3DFACE + 1);

    if (!RegisterClass(&wc)) 
    {
        MessageBox(NULL, L"Window registration failed!", L"Error", MB_ICONEXCLAMATION | MB_OK);
        return 0;
    }

    HWND hwnd = CreateWindowEx(
        0, L"StatusBar", L"StatusBar Example",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, 400, 300,
        NULL, NULL, hInstance, NULL);

    if (hwnd == NULL) 
    {
        MessageBox(NULL, L"Window creation failed!", L"Error", MB_ICONEXCLAMATION | MB_OK);
        return 0;
    }

    ShowWindow(hwnd, SW_SHOW);
    UpdateWindow(hwnd);

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

    return static_cast<int>(msg.wParam);
}

效果图：