title: How to run batch file(.bat) or batch code in C++ program?
body: <p>I am creating a college project in C++ language using Dev C++ SDK, with the help of Windows API (windows.h header).</p>
  
  <p>I have to create a Window Interface which consist of a button and I want to use that button to open a batch file (.bat) or run batch code stored in the program.</p>
  
  <p>I have created a Window with a button by using your Windows API tutorials found on Zetcode blog.</p>
  
  <p>But I am not able to use that button to open a batch file (.bat) or run batch code stored in the program. 
  Please tell me the code to implement this in my project. I am adding my program code and screenshot image of my program.</p>
  
  <pre><code>#include &lt;windows.h&gt;
  
  /* This is where all the input to the window goes to */
  LRESULT CALLBACK WndProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam) {
  switch(Message) {
  
      case WM_CREATE:
  
          CreateWindow(TEXT("button"), TEXT("Disable USB"),
              WS_VISIBLE | WS_CHILD,
              10, 10, 100, 25,
              hwnd, (HMENU) 1, NULL, NULL
  
          );
  
          CreateWindow(TEXT("button"), TEXT("Enable Firewall"),
              WS_VISIBLE | WS_CHILD,
              120, 10, 120, 25,
              hwnd, (HMENU) 2, NULL, NULL
  
          );
  
          break;
  
      case WM_COMMAND:
  
          // I need code which i can write here to execute batch code or run a bat file (.bat).
  
          break;
  
      /* Upon destruction, tell the main thread to stop */
      case WM_DESTROY: {
          PostQuitMessage(0);
          break;
      }
  
      /* All other messages (a lot of them) are processed using default procedures */
      default:
          return DefWindowProc(hwnd, Message, wParam, lParam);
  }
  return 0;
  }
  
  /* The 'main' function of Win32 GUI programs: this is where execution starts */
  int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
  WNDCLASSEX wc; /* A properties struct of our window */
  HWND hwnd; /* A 'HANDLE', hence the H, or a pointer to our window */
  MSG msg; /* A temporary location for all messages */
  
  /* zero out the struct and set the stuff we want to modify */
  memset(&amp;wc,0,sizeof(wc));
  wc.cbSize        = sizeof(WNDCLASSEX);
  wc.lpfnWndProc   = WndProc; /* This is where we will send messages to */
  wc.hInstance     = hInstance;
  wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
  
  /* White, COLOR_WINDOW is just a #define for a system color, try Ctrl+Clicking it */
  wc.hbrBackground = (GetSysColorBrush(COLOR_3DFACE));
  wc.lpszClassName = "WindowClass";
  wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION); /* Load a standard icon */
  wc.hIconSm       = LoadIcon(NULL, IDI_APPLICATION); /* use the name "A" to use the project icon */
  
  if(!RegisterClassEx(&amp;wc)) {
      MessageBox(NULL, "Window Registration Failed!","Error!",MB_ICONEXCLAMATION|MB_OK);
      return 0;
  }
  
  hwnd = CreateWindowEx(WS_EX_CLIENTEDGE,"WindowClass","System Hardening Tool",WS_VISIBLE|WS_SYSMENU|WS_MINIMIZEBOX|WS_MAXIMIZEBOX,
      CW_USEDEFAULT, /* x */
      CW_USEDEFAULT, /* y */
      640, /* width */
      480, /* height */
      NULL,NULL,hInstance,NULL);
  
  if(hwnd == NULL) {
      MessageBox(NULL, "Window Creation Failed!","Error!",MB_ICONEXCLAMATION|MB_OK);
      return 0;
  }
  
  /*
      This is the heart of our program where all input is processed and 
      sent to WndProc. Note that GetMessage blocks code flow until it receives something, so
      this loop will not produce unreasonably high CPU usage
  */
  while(GetMessage(&amp;msg, NULL, 0, 0) &gt; 0) { /* If no error is received... */
      TranslateMessage(&amp;msg); /* Translate key codes to chars if present */
      DispatchMessage(&amp;msg); /* Send it to WndProc */
  }
  return msg.wParam;
  }
  </code></pre>
  
  <p>Screenshots: </p>
  
  <p>My Project Window with diaglog box and buttons</p>
  
  <p><a href="https://i.stack.imgur.com/igI2U.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/igI2U.jpg" alt="enter image description here"></a></p>
  
  <p>Program code</p>
  
  <p><a href="https://i.stack.imgur.com/mbdAd.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mbdAd.jpg" alt="enter image description here"></a></p>