/////////////////////////////////////////////////////////////////
//                                                             //
//  frame.cpp  -  small windows demo that creates a console    //
//                window from a Win32 Application              //
//                                                             //
//  Jim Fawcett, CSE691 - SW Modeling & Analysis, 20 Sep 2000  //
//  Ref:  Simply added a console to minwin.cpp.  Made a few    //
//        other cosmetic modifications.                        //
/////////////////////////////////////////////////////////////////

#include <windows.h>
#include <cstring>

HWND  hWnd;     // handle to window created in InitInstance
HANDLE hInst;   // handle to current module
HANDLE stdin;
HANDLE stdout;

//----< process windows messages >-----------------------------

LRESULT CALLBACK WinProc(HWND hWnd, UINT message, 
                              WPARAM wParam, LPARAM lParam) {

  HDC hDC;          // device context
  RECT rect;        // will hold dimensions of client area
  PAINTSTRUCT ps;   // used by Windows to hold painting information
  DWORD word;

  const char *msg1 = "CSE681 - SW Modeling & Analysis";
  const char *msg2 = "Hello World";
  const char *msg = "";
  static int mcount = 0;
  static int pcount = 0;
  static char text[100];

  switch(message) {
  case WM_PAINT:
    hDC = BeginPaint(hWnd,&ps);
    msg = "\n  paint message";
    GetClientRect(hWnd,&rect);
    TextOut(hDC,30,30,msg1,strlen(msg1));
    MoveToEx(hDC,25,50,NULL);
    LineTo(hDC,260,50);
    EndPaint(hWnd, &ps);
    wsprintf(text,"\n  Paint Count: %d",++pcount);
    msg = text;
    break;
  case WM_LBUTTONDOWN:
    msg = "\n  left button message";
    break;
  case WM_RBUTTONDOWN:
    msg = "\n  right button message";
    break;
  case WM_MOUSEMOVE:
    wsprintf(text,"\n  Mouse Count: %d",++mcount);
    msg = text;
    break;
  case WM_SIZE:
    msg = "\n  window size message";
    GetClientRect(hWnd,&rect);
    break;
  case WM_DESTROY:
    msg = "\n  destroy message";
    PostQuitMessage(0);
    break;
  default :
    return(DefWindowProc(hWnd,message, wParam, lParam));
  }
  WriteFile(stdout,msg,strlen(msg),&word,0);
  return (NULL);
}

//

//----< define and register window "class" >-------------------

BOOL InitApplication(HINSTANCE hInstance) {

// define window data in WNDCLASS struct and register
  WNDCLASS wc;
  wc.style = NULL;                  // default style
  wc.lpfnWndProc = WinProc;         // name of function handling messages
  wc.cbClsExtra  = 0;               // no per-class user-defined data
  wc.cbWndExtra  = 0;               // no per-window user-defined data
  wc.hInstance   = hInstance;       // application attached to this class
  wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
  wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
  wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
  wc.lpszMenuName  = NULL;          // menu name
  wc.lpszClassName = "BasicWindow"; // name of this "class"
  return (RegisterClass(&wc));
}

//----< create and display window >----------------------------

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) {
 
  hInst = hInstance;
  hWnd = CreateWindow(
    "BasicWindow",                  // "class" to use when creating
    "CSE681 - Main Window",         // window title
    WS_OVERLAPPEDWINDOW,            // window style
    CW_USEDEFAULT,                  // default horizontal position
    CW_USEDEFAULT,                  // default vertical position
    400,                            // 200 pixels wide
    300,                            // 150 pixels high
    NULL,                           // no parent window
    NULL,                           // use window class menu
    hInstance,                      // owner of window
    NULL);

  if(!hWnd) return FALSE;
  ShowWindow(hWnd, nCmdShow);
  UpdateWindow(hWnd);
  return (TRUE);
}

//

//----< collect and dispatch windows messages >----------------

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                   LPSTR lpCmdLine, int nCmdShow) {

  MSG msg;
  if(!InitApplication(hInstance))
      return (FALSE);                 // can't initialize window
  if(!InitInstance(hInstance, nCmdShow))
    return (FALSE);
 
  if(!AllocConsole())
    return (FALSE);
  stdin  = GetStdHandle(STD_INPUT_HANDLE);
  stdout = GetStdHandle(STD_OUTPUT_HANDLE);
  SetConsoleTitle("Console window created in Win32 Application");

  while(GetMessage(&msg, NULL, NULL, NULL)) {
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  }
  return (msg.wParam);
}