#include <windows.h>
#include <tchar.h>
#define IDC_SECOND_SCREEN 1500


LRESULT CALLBACK fnOutputScreen_WndProc(HWND hwnd, unsigned int msg, WPARAM wParam, LPARAM lParam)
{
 return (DefWindowProc(hwnd, msg, wParam, lParam));
}


LRESULT CALLBACK fnWndProc(HWND hwnd, unsigned int msg, WPARAM wParam, LPARAM lParam)
{
 switch(msg)
 {
  case WM_CREATE:
    {
       WNDCLASSEX wc;
       HINSTANCE hIns      = ((LPCREATESTRUCT)lParam)->hInstance;
       HWND hWnd           = CreateWindow(_T("button"),_T("Show Output Screen"),WS_CHILD|WS_VISIBLE,95,40,150,25,hwnd,(HMENU)IDC_SECOND_SCREEN,hIns,0);
       TCHAR szClassName[] = _T("OutputScreen");
       wc.lpszClassName    = szClassName;
       wc.lpfnWndProc      = fnOutputScreen_WndProc;
       wc.cbSize           = sizeof(WNDCLASSEX);
       wc.style            = 0;
       wc.hIcon            = LoadIcon(NULL,IDI_APPLICATION);
       wc.hInstance        = hIns;
       wc.hIconSm          = 0;
       wc.hCursor          = LoadCursor(NULL,IDC_ARROW);
       wc.hbrBackground    = (HBRUSH)GetStockObject(WHITE_BRUSH);
       wc.cbWndExtra       = 0;
       wc.lpszMenuName     = NULL;
       wc.cbClsExtra       = 0;
       RegisterClassEx(&wc);
       return 0;
    }
  case WM_COMMAND:
    switch(LOWORD(wParam))
    {
      case IDC_SECOND_SCREEN:
        HWND hWnd=CreateWindowEx(0,_T("OutputScreen"),_T("Output Screen"),WS_OVERLAPPEDWINDOW,350,450,450,450,HWND_DESKTOP,0,GetModuleHandle(NULL),0);
        ShowWindow(hWnd,SW_SHOWNORMAL);
        break;
    }
    return 0;
  case WM_DESTROY:
    {
       PostQuitMessage(0);
       return 0;
    }
 }

 return (DefWindowProc(hwnd, msg, wParam, lParam));
}


int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int iShow)
{
 TCHAR szClassName[]=_T("Form1");
 WNDCLASSEX wc;
 MSG messages;
 HWND hWnd;

 wc.lpszClassName=szClassName,                wc.lpfnWndProc=fnWndProc;
 wc.cbSize=sizeof (WNDCLASSEX),               wc.style=0;
 wc.hIcon=LoadIcon(NULL,IDI_APPLICATION),     wc.hInstance=hInstance;
 wc.hIconSm=LoadIcon(NULL, IDI_APPLICATION),  wc.hCursor=LoadCursor(NULL,IDC_ARROW);
 wc.hbrBackground=(HBRUSH)COLOR_BTNSHADOW,    wc.cbWndExtra=0;
 wc.lpszMenuName=NULL,                        wc.cbClsExtra=0;
 RegisterClassEx(&wc),
 hWnd=CreateWindowEx(0,szClassName,szClassName,WS_OVERLAPPEDWINDOW,150,150,350,150,HWND_DESKTOP,0,hInstance,0);
 ShowWindow(hWnd,iShow);
 while(GetMessage(&messages,NULL,0,0))
 {
    TranslateMessage(&messages);
    DispatchMessage(&messages);
 }

 return messages.wParam;
}