VC++ 实现程序重启

转载：https://blog.csdn.net/what951006/article/details/72729448

一、创建一个Win32项目

二、窗口处理函数中，Create窗口时创建一个按钮，并在按钮点击事件中处理程序重启

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    int wmId, wmEvent;
    PAINTSTRUCT ps;
    HDC hdc;

    switch (message)
    {
    case WM_CREATE:
    {
                      //创建按钮  
                      CreateWindow(L"Button", L"重启", WS_VISIBLE | WS_CHILD,
                          600, 240, 100, 50, hWnd, (HMENU)IDC_BUTTON_RESTART, (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE), NULL);
    }
        break;

    case WM_COMMAND:
        wmId = LOWORD(wParam);
        wmEvent = HIWORD(wParam);
        // 分析菜单选择: 
        switch (wmId)
        {
        case IDM_ABOUT:
            DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
            break;
        case IDM_EXIT:
            DestroyWindow(hWnd);
            break;
        case IDC_BUTTON_RESTART://重启按钮的响应
        {
                                    //::PostMessage(hWnd, WM_SYSCOMMAND, SC_CLOSE, NULL);
                                    TCHAR szModuleName[MAX_PATH * 2];
                                    ::GetModuleFileName(NULL, szModuleName, _countof(szModuleName) - 2);

                                    STARTUPINFO si;
                                    ZeroMemory(&si, sizeof(si));
                                    si.cb = sizeof(si);
                                    si.dwFlags = STARTF_USESHOWWINDOW;
                                    si.wShowWindow = SW_SHOW;

                                    PROCESS_INFORMATION pi;
                                    ZeroMemory(&pi, sizeof(pi));

                                    if (CreateProcess(NULL, szModuleName, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi))
                                    {
                                        // 既然我们不使用两个句柄，最好是立刻将它们关闭
                                        ::CloseHandle(pi.hThread);
                                        ::CloseHandle(pi.hProcess);
                                    }

                                    ::PostMessage(hWnd, WM_QUIT, 0, 0);
        }
            break;
        default:
            return DefWindowProc(hWnd, message, wParam, lParam);
        }
        break;
    case WM_PAINT:
        hdc = BeginPaint(hWnd, &ps);
        // TODO:  在此添加任意绘图代码...
        EndPaint(hWnd, &ps);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}