Handling SIGINT signal for a server program

I have created a small server program that encrypts text using a named pipe:

#define UNICODE
#define WIN32_WINNT 0x0500
#include <stdio.h>
#include <windows.h>
#include <signal.h>



HANDLE hPipe;
DWORD WINAPI ServerProc(LPVOID lpVoid)
{


    hPipe = CreateNamedPipe(L"\\\\.\\pipe\\testpipe", PIPE_ACCESS_DUPLEX, PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |PIPE_WAIT, 1, 256, 256, 0, NULL);
    if(!hPipe)
        return wprintf(L"ERROR : Cannot create pipe.\n");

    while(ConnectNamedPipe(hPipe, NULL))
    {
        WCHAR szText[80] = {0};
        DWORD dwSize;
        INT i;

        ReadFile(hPipe, szText, 158, &dwSize, NULL);

        for(i = 0; i < dwSize; i++)
            szText[i] ^= '#';

        WriteFile(hPipe, szText, 158, &dwSize, NULL);
        FlushFileBuffers(hPipe);
            DisconnectNamedPipe(hPipe);
    }

    CloseHandle(hPipe);

    return 0;
}

void SignalHandler(int signal)
{
    DisconnectNamedPipe(hPipe);
    CloseHandle(hPipe);
    printf("Application closing...\n");
    exit(0);
}


int wmain(void)
{
    HANDLE hThread;

    signal(SIGINT, SignalHandler);  

    hThread = CreateThread(NULL, 0, ServerProc, NULL, 0, NULL);

    WaitForSingleObject(hThread, INFINITE);

    CloseHandle(hThread);
}

In this code I have created a hPipe handle as global because my program thread and the signal handler both need the handle.

Is this a correct way to handle signals?