#include "main.h"
#include "windows.h"
//#include "Psapi.h"
#include "shlwapi.h"
//#define MAX_VALUE_LEN 16384
//#define MAX_PATH_SIZE 260
//#define MAX_COUNT 1000

//MSG Msg;//Структура Msg типа MSG для получения сообщений Windows
//-------------------------------------------------------------------------------------
/*Главная функция WinMaln*/
 HINSTANCE hInstance;

 const int iHeightEdit=20;
 TCHAR szFileName[260];
 OPENFILENAME ofn;
 //BOOL flag;
 
 HWND hWndMain;
 HWND hButExit,hButClear;
 HWND hListBox,hListBoxErr;
 HWND hButOpen,hButCreateMap;
 HWND hEditData;
 
 TCHAR lpProcName[256]=TEXT("");
 wchar_t pszStrPID[256],szBufErr[256];
 //HANDLE hFile;
 HANDLE s_hFileMap = NULL;
 PVOID pView;
 
 
int WINAPI WinMain(HINSTANCE hInst,HINSTANCE hPrev,LPSTR lpCmd, int nShow)
{
//-------------------------------------------------------------------------------------
  hInstance=hInst;
  WNDCLASSEX  wc;//Структура we типа WNDCLASS для задания характеристик окна
  static LPCTSTR szClassName = TEXT("MainLab5Window");//Произвольное имя класса главного окна
  static LPCTSTR szTitle = TEXT("Лабораторная работа №6 - Межпроцессное и межпоточное взаимодействие");//заголовок окна
   /*Зарегистрируем класс главного окна*/
  ZeroMemory(&wc,sizeof(wc));//Обнуление всех членов структуры wс
  wc.cbSize = sizeof(wc); // Set structure size
  wc.style = CS_HREDRAW | CS_VREDRAW;
  wc.lpfnWndProc=WndProc; // Определяем оконную процедуру для главного окна
  wc.hInstance=hInst;//Дескриптор приложения
  wc.hIcon = LoadIcon(0, IDI_APPLICATION);//Стандартная пиктограмма
  wc.hCursor=LoadCursor(NULL,IDC_ARROW);//Стандартный курсор мыши
  char ID_MAINMENU[10] = "menu? o_0";
  wc.hbrBackground=CreateSolidBrush(GetSysColor(COLOR_BTNFACE));// системный цвет рабочий области окна
  wc.lpszMenuName=(LPCWSTR)ID_MAINMENU; 
  wc.lpszClassName=szClassName;//Имя класса окна

  RegisterClassEx(&wc);//Вызов функции Windows регистрации класса окна
  //Создадим главное окно по центру экрана и сделаем его видимым
  
  hWndMain=CreateWindow(szClassName, szTitle, WS_OVERLAPPEDWINDOW & ~WS_MAXIMIZEBOX & ~WS_THICKFRAME,0,0,800,735,HWND_DESKTOP,NULL,hInst,NULL);//Родитель, меню, другие параметры
  RECT rc,rcMain;
  HWND hwndDesktop = GetDesktopWindow();  
  GetWindowRect(hwndDesktop, &rc); 
  GetWindowRect(hWndMain, &rcMain);   
  SetWindowPos(hWndMain, HWND_TOP, (rc.right-rc.left-rcMain.right)/2, (rc.bottom-rc.top-rcMain.bottom)/2, 0, 0, SWP_NOSIZE); 
  ShowWindow(hWndMain,SW_SHOWNORMAL);//Вызов функции Windows показа окна 
	
  /*Организуем цикл обнаружения сообщений*/
  while(GetMessage(&Msg,NULL,0,0)) {// Если есть сообщение, передать его нам
    TranslateMessage(&Msg);
	  DispatchMessage(&Msg);}//и вызвать оконную процедуру WndProc

  return 0;//После выхода из цикла вернуться в Windows
}//Конец функции WinMain

LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam){
  switch(msg){
	HANDLE_MSG (hwnd, WM_CREATE, OnCreate);
	HANDLE_MSG (hwnd, WM_COMMAND, OnCommand);
	//HANDLE_MSG(hwnd,WM_PAINT,OnPaint);
    //HANDLE_MSG (hwnd, WM_DESTROY, OnDestroy);
	//HANDLE_MSG (hwnd, WM_NOTIFY, OnNotify);
    default:  //B случае всех остальных сообщений Windows обработка
      return(DefWindowProc(hwnd,msg,wParam,lParam)) ; //их по умолчанию
  }//Конец оператора switch
}//Конец функции WndProc

bool OnCreate (HWND hwnd, LPCREATESTRUCT){
//-------------------------------------------------------------------------------------
  TCHAR ButExit[]=TEXT(" Exit ");
    
  RECT Rect;
  GetClientRect(hwnd,&Rect);

  hButExit=CreateWindow(TEXT("BUTTON"),NULL,WS_CHILD|WS_VISIBLE|SS_CENTER,Rect.right- Rect.left-105,Rect.top+655+iHeightEdit,(int)(1,5*iHeightEdit),iHeightEdit ,hwnd,NULL,hInstance,NULL);
  SendMessage(hButExit,WM_SETTEXT, 0, (LPARAM)(LPCSTR)ButExit);
  hButClear=CreateWindow(TEXT("BUTTON"),NULL,WS_CHILD|WS_VISIBLE|SS_CENTER,Rect.right- Rect.left-235,Rect.top+655+iHeightEdit,(int)(1,5*iHeightEdit),iHeightEdit ,hwnd,NULL,hInstance,NULL);
  SendMessage(hButClear,WM_SETTEXT, 0, (LPARAM)(LPCSTR)TEXT("Clear"));

  hButOpen=CreateWindow(TEXT("BUTTON"),NULL,WS_CHILD|WS_VISIBLE|SS_CENTER,Rect.right- Rect.left-780,Rect.top+5+iHeightEdit,(int)(6*iHeightEdit),iHeightEdit ,hwnd,NULL,hInstance,NULL);
  SendMessage(hButOpen,WM_SETTEXT, 0, (LPARAM)(LPCSTR)TEXT("Open"));

  hButCreateMap=CreateWindow(TEXT("BUTTON"),NULL,WS_CHILD|WS_VISIBLE|SS_CENTER,Rect.right- Rect.left-780,Rect.top+30+iHeightEdit,(int)(6*iHeightEdit),iHeightEdit ,hwnd,NULL,hInstance,NULL);
  SendMessage(hButCreateMap,WM_SETTEXT, 0, (LPARAM)(LPCSTR)TEXT("Create Mapping Of Data"));

  hEditData=CreateWindow(TEXT("EDIT"),NULL,WS_CHILD|WS_VISIBLE|SS_LEFT ,(int)(Rect.left+70),(int)(Rect.top+100),(int)(Rect.right- Rect.left-600),20,hwnd,NULL,hInstance,NULL);	
    
  //HWND hTotalOfBytes=CreateWindow(TEXT("STATIC"),NULL,WS_CHILD|WS_VISIBLE|SS_LEFT ,(int)(Rect.left+15),(int)(Rect.top+345),(int)(Rect.right- Rect.left-670),20,hwnd,NULL,hInstance,NULL);	
  //SendMessage(hTotalOfBytes,WM_SETTEXT, 0, (LPARAM)(LPCSTR)TEXT("TotalOfBytes:"));

  HWND hAuthor=CreateWindow(TEXT("STATIC"),NULL,WS_CHILD|WS_VISIBLE|SS_LEFT ,(int)(Rect.left+250),(int)(Rect.top+680),(int)(Rect.right- Rect.left-550),20,hwnd,NULL,hInstance,NULL);
  SendMessage(hAuthor,WM_SETTEXT, 0, (LPARAM)(LPCSTR)TEXT("(c) Косоногова М.А., гр. ИТ-31, 2008"));

  hListBox= CreateWindow(
  TEXT("LISTBOX"), NULL, WS_CHILD | /*LBS_STANDARD |*/ WS_VSCROLL | LBS_DISABLENOSCROLL | WS_VISIBLE/* & (~LBS_SORT)*/,
  340,30, 455, 250, hwnd, NULL, hInstance, NULL);

  hListBoxErr= CreateWindow(
  TEXT("LISTBOX"), NULL, WS_CHILD | /*LBS_STANDARD |*/ WS_VSCROLL | LBS_DISABLENOSCROLL | WS_VISIBLE/* & (~LBS_SORT)*/,
  340,315, 455, 270, hwnd, NULL, hInstance, NULL);

  return TRUE;
}

void OnCommand (HWND hwnd, int id, HWND hw, UINT){
//-------------------------------------------------------------------------------------
		if (hw==hButExit) OnClickButExit();
		if (hw==hButClear) OnClickButClear(hWndMain);
		if (hw==hButOpen) OnClickButOpen(hWndMain);
		if (hw==hButCreateMap) OnClickButCreateMap(hWndMain);
}

void OnClickButExit()
{
	PostQuitMessage(0);		
}

void OnClickButClear(HWND hwnd)
{
	RECT Rect;
	GetClientRect(hwnd,&Rect);

	hListBox= CreateWindow(
	TEXT("LISTBOX"), NULL, WS_CHILD | /*LBS_STANDARD |*/ WS_VSCROLL | LBS_DISABLENOSCROLL | WS_VISIBLE/* & (~LBS_SORT)*/,
	340,30, 455, 250, hwnd, NULL, hInstance, NULL);

	hListBoxErr= CreateWindow(
    TEXT("LISTBOX"), NULL, WS_CHILD | /*LBS_STANDARD |*/ WS_VSCROLL | LBS_DISABLENOSCROLL | WS_VISIBLE/* & (~LBS_SORT)*/,
    340,315, 455, 270, hwnd, NULL, hInstance, NULL);
}

void OnClickButOpen(HWND hwnd)
{
  /*LPCWSTR lpFilter=TEXT("Text\0*.TXT\0");
  ZeroMemory(&ofn,sizeof(OPENFILENAME));
  ofn.lStructSize=sizeof(OPENFILENAME) ;
  ofn.hwndOwner=hWndMain;
  ofn.hInstance=NULL;
  ofn.lpstrFile = szFileName;
  ofn.lpstrFile[0] = '\0';
  ofn.nMaxFile = sizeof(szFileName);
  ofn.lpstrFilter = lpFilter;
  ofn.nFilterIndex = 1;
  ofn.lpstrFileTitle = NULL;
  ofn.nMaxFileTitle = 0;
  ofn.lpstrInitialDir = NULL;
  ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
	if (!GetOpenFileName(&ofn))
	{
		MessageBox(hwnd,TEXT("Error by open file"),TEXT("Error"),MB_ICONERROR);
		wsprintf(szBufErr,L"Error by open file");
		SendMessage(hListBoxErr,LB_ADDSTRING, 0, (LPARAM)(LPCSTR)szBufErr);
	}
	else
	{
		hFile=CreateFile(szFileName,GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,NULL,NULL);	
		if (hFile==INVALID_HANDLE_VALUE)
		{
			MessageBox(hwnd,TEXT("File isn't opened or created"),TEXT("Error"),MB_ICONERROR);
			wsprintf(szBufErr,L"File isn't opened");
			SendMessage(hListBoxErr,LB_ADDSTRING, 0, (LPARAM)(LPCSTR)szBufErr);
		}
		else
		{
			wsprintf(szBufErr,L"File was opened successfully");
			SendMessage(hListBoxErr,LB_ADDSTRING, 0, (LPARAM)(LPCSTR)szBufErr);

		}
	}*/
}

void OnClickButCreateMap(HWND hwnd)
{
	s_hFileMap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, 
            PAGE_READWRITE, 0, 4 * 1024, TEXT("MMFSharedData"));

         if (s_hFileMap != NULL) {

            if (GetLastError() == ERROR_ALREADY_EXISTS) {
				wsprintf(szBufErr,L"Mapping already exists - not created.");
				SendMessage(hListBoxErr,LB_ADDSTRING, 0, (LPARAM)(LPCSTR)szBufErr);
				CloseHandle(s_hFileMap);

            } else {
               // File mapping created successfully.
               // Map a view of the file into the address space.
				  pView = MapViewOfFile(s_hFileMap,
                  FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);

               if (pView != NULL) {
                  // Put edit text into the MMF.
                  Edit_GetText(hEditData,(PTSTR) pView, 4 * 1024);
                  // Protect the MMF storage by unmapping it.
                  UnmapViewOfFile(pView);
                  // The user can't create another file right now.
                  //Button_Enable(hwndCtl, FALSE);
                  // The user closed the file.
                  //Button_Enable(GetDlgItem(hwnd, IDC_CLOSEFILE), TRUE);
               } else {
				   wsprintf(szBufErr,L"Can't map view of file.");
				   SendMessage(hListBoxErr,LB_ADDSTRING, 0, (LPARAM)(LPCSTR)szBufErr);
               }
            }

         } else {
			 wsprintf(szBufErr,L"Can't create file mapping.");
			 SendMessage(hListBoxErr,LB_ADDSTRING, 0, (LPARAM)(LPCSTR)szBufErr);
         }		
}