/////////////////////////////////////////////////////////////////////
// Win32FrameWin.cpp - Illustrates Message Handling and Painting   //
//                                                                 //
// Jim Fawcett, CSE775 - Distributed Objects, Spring 2005          //
/////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Win32FrameWin.h"
#include "Win32FrameWin.h"
#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;                        // current instance
TCHAR szTitle[MAX_LOADSTRING];          // title bar text
TCHAR szWindowClass[MAX_LOADSTRING];    // main window class name

//----< entry point >--------------------------------------------

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
  MSG msg;
  HACCEL hAccelTable;

  // Initialize global strings
  LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
  LoadString(hInstance, IDC_WIN32FRAMEWIN, szWindowClass, MAX_LOADSTRING);
  MyRegisterClass(hInstance);

  // Perform application initialization:
  if (!InitInstance (hInstance, nCmdShow)) 
  {
    return FALSE;
  }

  hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_WIN32FRAMEWIN);

  // Main message loop:
  while (GetMessage(&msg, NULL, 0, 0)) 
  {
    if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) 
    {
      TranslateMessage(&msg);
      DispatchMessage(&msg);
    }
  }
  return (int) msg.wParam;
}
//
//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage are only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
  WNDCLASSEX wcex;

  wcex.cbSize = sizeof(WNDCLASSEX); 

  wcex.style      = CS_HREDRAW | CS_VREDRAW;
  wcex.lpfnWndProc  = (WNDPROC)WndProc;
  wcex.cbClsExtra   = 0;
  wcex.cbWndExtra   = 0;
  wcex.hInstance    = hInstance;
  wcex.hIcon      = LoadIcon(hInstance, (LPCTSTR)IDI_WIN32FRAMEWIN);
  wcex.hCursor    = LoadCursor(NULL, IDC_ARROW);
  wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
  wcex.lpszMenuName = (LPCTSTR)IDC_WIN32FRAMEWIN;
  wcex.lpszClassName  = szWindowClass;
  wcex.hIconSm    = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);

  return RegisterClassEx(&wcex);
}
//
/////////////////////////////////////////////////////////////////
//
//   FUNCTION: InitInstance(HANDLE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}
//
/////////////////////////////////////////////////////////////////
//
//  FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND  - process the application menu
//  WM_PAINT  - Paint the main window
//  WM_DESTROY  - post a quit message and return
//
//
LRESULT CALLBACK WndProc(
  HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam
)
{
  int wmId, wmEvent;
  PAINTSTRUCT ps;
  HDC hdc;

  switch (message) 
  {
  case WM_COMMAND:
    wmId    = LOWORD(wParam); 
    wmEvent = HIWORD(wParam); 
    // Parse the menu selections:
    switch (wmId)
    {
    case IDM_ABOUT:
      DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
      break;
    case IDM_EXIT:
      DestroyWindow(hWnd);
      break;
    default:
      return DefWindowProc(hWnd, message, wParam, lParam);
    }
    break;
  case WM_PAINT:
    hdc = BeginPaint(hWnd, &ps);
    doMyPaint(hWnd,hdc,ps);
    EndPaint(hWnd, &ps);
    break;
  case WM_LBUTTONDOWN:
    doMyLeftButtonDown(hWnd);
    break;
  case WM_DESTROY:
    PostQuitMessage(0);
    break;
  default:
    return DefWindowProc(hWnd, message, wParam, lParam);
  }
  return 0;
}
//
/////////////////////////////////////////////////////////////////
// my message handlers

//----< Message handler paint >----------------------------------

void CALLBACK doMyPaint(HWND hWnd, HDC &hdc, PAINTSTRUCT &ps)
{
  RECT rect;        // will hold dimensions of client area

  const char *msg1 = "CSE775 - Distributed Objects";
  const char *msg2 = "Hello World";
  const char *msg;

  msg = "\n  paint message";
  GetClientRect(hWnd,&rect);
  TextOut(hdc,30,30,msg1,static_cast<int>(strlen(msg1)));
  MoveToEx(hdc,25,50,NULL);
  LineTo(hdc,260,50);
}
//----< Message handler for Left Button Press >------------------

void CALLBACK doMyLeftButtonDown(HWND hWnd)
{
  ::MessageBox(hWnd,"Left Button Pressed","Event Handler",MB_OK);
}

/////////////////////////////////////////////////////////////////
// message handler provided by Project Wizard

//----< Message handler for about box >--------------------------

LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
  switch (message)
  {
  case WM_INITDIALOG:
    return TRUE;

  case WM_COMMAND:
    if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) 
    {
      EndDialog(hDlg, LOWORD(wParam));
      return TRUE;
    }
    break;
  }
  return FALSE;
}