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Код

// подключаем стандартные контролы
#include <windows.h>
#include <mmsystem.h>        // Подключаем системную библеотеку 
#pragma comment (lib,"Winmm.lib")
//#include <stdlib.h>
//#include <stdio.h>
#include <time.h>
#include <math.h>

#include "resource.h"

HINSTANCE hInst;
HWND hMainDlg;
HANDLE hThread;

#define NUM_SYMB 3

#define START_SYMBOL 'a'
#define FILE_NAME_Symbol "_Symbol.txt"
unsigned char Symbol[NUM_SYMB];

#define ASC(a) a<0?-a:a
void GenerateSymbol(void)
{
    int i;
    for(i=0;i<NUM_SYMB;i++){
        Symbol[i]=START_SYMBOL+i;
    }
}

void Save2DMassive(char* pzFileName, unsigned char * pMas, int y, int x, int SizeOf)
{
    int i,j,k;
    DWORD retFile;
    if(pzFileName!=NULL&&pMas!=NULL){
        //FILE* file;
        //file = fopen(pzFileName,"w");
        HANDLE m_file=CreateFile(pzFileName,GENERIC_WRITE,FILE_SHARE_READ | FILE_SHARE_WRITE,
                        NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
        for(j=0;j<y;j++){
            for(i=0;i<x;i++){
                //for(k=0;k<SizeOf;k++){
                    //putc(*(pMas+(j*x+i)*SizeOf+k),file);
                //}
                WriteFile(m_file,(pMas+(j*x+i)*SizeOf),SizeOf,&retFile,NULL);
            }
            //putc('\n',file);
            WriteFile(m_file,"\r\n",2,&retFile,NULL);
        }
        //fclose(file);
        CloseHandle(m_file);
    }
}

void Load2DMassive(char* pzFileName, unsigned char * pMas, const int y, const int x, int SizeOf)
{
    int i,j,k;
    char buf[2];
    DWORD retFile;
    if(pzFileName!=NULL&&pMas!=NULL){
        //FILE* pFile;
        //pFile = fopen(pzFileName,"r");
        HANDLE m_file=CreateFile(pzFileName,GENERIC_READ,FILE_SHARE_READ | FILE_SHARE_WRITE,
                        NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
        for(j=0;j<y;j++){
            for(i=0;i<x;i++){
                //for(k=0;k<SizeOf;k++){
                    //*(pMas+(j*x+i)*SizeOf+k) = getc(pFile);
                //}
                ReadFile(m_file,(pMas+(j*x+i)*SizeOf),SizeOf,&retFile,NULL);
            }
            ReadFile(m_file,buf,2,&retFile,NULL);
        }
        //fclose(pFile);
        CloseHandle(m_file);
    }
}

DWORD WINAPI ThreadFunc( LPVOID lpParam ) 
{
    GenerateSymbol();
    Save2DMassive(FILE_NAME_Symbol,(unsigned char *)Symbol,1,NUM_SYMB,sizeof(unsigned char));
    Load2DMassive(FILE_NAME_Symbol,(unsigned char *)Symbol,1,NUM_SYMB,sizeof(unsigned char));

    return 0;
} 


BOOL  CALLBACK DlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    int wmId, wmEvent;
    switch (message) 
    {
    case WM_INITDIALOG:
        hMainDlg  = hDlg;
        hThread = CreateThread(NULL, 0, ThreadFunc, 0, 0, 0);
        break;
    case WM_COMMAND:
        wmId    = LOWORD(wParam); 
        wmEvent = HIWORD(wParam); 
        // Parse the menu selections:
        switch (wmId)
        {
        case IDOK:
            break;
        case IDCANCEL:
            DestroyWindow(hDlg);
            break;
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default: 
        return FALSE; 
    }
return TRUE;
}

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
    hInst = hInstance;
    DialogBox(hInst,MAKEINTRESOURCE(IDD_DIALOG1),0,DlgProc);
    return 0;
}