Критическая секция

DWORD WINAPI FunctionThread(PVOID pvParam)
{ char str[55];
char buf[150];
 
THRFUNCPARAM *ThrParam = (THRFUNCPARAM *)pvParam;
wsprintf(str, "Вторичный поток создан");
HDC hDC = GetDC(ThrParam->hWnd);
int stri = strlen(str);
RECT rc;
GetClientRect(ThrParam->hWnd, &rc);
rc.top = ThrParam->YPos;
rc.left = ThrParam->XPos;
rc.right -= ThrParam->XPos;
int N = strlen(str)+20;
while(TRUE)
{
if (bSynchro)
{
EnterCriticalSection(&cs);
for(int i=0; i<N; i++)
{
for(int bufi=148; bufi>0; bufi--)
buf[bufi]=buf[bufi-1];
buf[0]=str[stri];
if(stri==0)
stri=strlen(str);
stepCount[ThrParam->Number]+=1;
 
GetClientRect(ThrParam->hWnd, &rc);
rc.top = ThrParam->YPos;
rc.left = ThrParam->XPos;
rc.right -= ThrParam->XPos;
DrawText(hDC, buf, -1, &rc, DT_LEFT | DT_SINGLELINE);
stri--;
Sleep(200);
}
LeaveCriticalSection(&cs);
}
else
for(int i=0; i<N; i++)
{
for(int bufi=148; bufi>0; bufi--)
buf[bufi]=buf[bufi-1];
buf[0]=str[stri];
if(stri==0)
stri=strlen(str);
stepCount[ThrParam->Number]+=1;
 
GetClientRect(ThrParam->hWnd, &rc);
rc.top = ThrParam->YPos;
rc.left = ThrParam->XPos;
rc.right -= ThrParam->XPos;
DrawText(hDC, buf, -1, &rc, DT_LEFT | DT_SINGLELINE);
stri--;
Sleep (200);
}
num[50]=NULL;
}
return 0;
}