#include <windows.h>
#include <commctrl.h>
#include <time.h>
#include "resource.h"

unsigned int i=0;
unsigned int timer=30;
HANDLE hThread;
HWND hMainDlg, hDlgButton;

void thread()
{
    for(UINT timer = 30; timer >= 0; timer--)
    {
        SetDlgItemInt(hMainDlg, ID_TTIMER, timer, FALSE);
        Sleep(1000);
    }
    EnableWindow(hDlgButton, FALSE);
}

BOOL CALLBACK DlgProc(HWND hwnd,UINT Message,WPARAM wParam,LPARAM lParam)
{
     switch(Message)
     {
        case WM_INITDIALOG:
            hMainDlg = hwnd;
            hDlgButton = GetDlgItem(hMainDlg, ID_BTCLICK);
            hThread = CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)thread, NULL, NULL, NULL);
            break;
                    case WM_CLOSE:
                         if( hThread )
                              CloseHandle(hThread);
                         EndDialog(hwnd,0);
                         break;
                         case WM_COMMAND:
                              switch(LOWORD(wParam))
                              {
                                                    case ID_BTABOUT:
                                                         DialogBox(NULL,MAKEINTRESOURCE(IDD_ABOUT),NULL,DlgProc);
                                                         break;
                                                         case ID_ABOUTEXIT:
                                                              EndDialog(hwnd,0);
                                                              break;
                                                         case ID_BTRESET:
                                                              {
                                                                         timer=30;
                                                                         i=0;
                                                                         SetDlgItemInt(hwnd,ID_TTIMER,timer,FALSE);
                                                                         SetDlgItemInt(hwnd,ID_TCOUNT,i,FALSE);
                                                                         if( hThread )
                                                                            CloseHandle(hThread);
                                                                         hThread = CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)thread, NULL, NULL, NULL);
                                                                         }
                                                                         break;
                                                case ID_BTCLICK:
                                                                   i++;
                                                                    SetDlgItemInt(hwnd,ID_TCOUNT,i,FALSE);
                                                                    break;
                                                         }
                                                         break;
                         case WM_DESTROY:
                              EndDialog(hwnd,0);
                              break;
                              default:
                                      return FALSE;
                                      }
                                      return TRUE;
                                      }
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow)
{
    InitCommonControls();
    return DialogBox(hInstance,MAKEINTRESOURCE(IDD_MAIN),NULL,DlgProc);
}