Информация о логических дисках

void OnPaint(HWND hwnd)
{
    PAINTSTRUCT ps;
    DWORD tmp = GetLogicalDriveStrings(0,NULL);
    HANDLE hHeap = GetProcessHeap();
    LPSTR Driv = (LPSTR)HeapAlloc(hHeap,0,tmp);
    //char arr[1024];
    GetLogicalDriveStrings(tmp,Driv);
    char a[100];
    ZeroMemory(&ps,sizeof(ps));
    HDC hdc = BeginPaint(hwnd, &ps);
    wsprintf(a,"DWORD=%s",Driv);
    TextOut(hdc,40,100,a,sizeof(a));
    EndPaint(hwnd,&ps);
    HeapFree(hHeap,0,Driv);
}

void OnPaint(HWND hwnd)
{
    PAINTSTRUCT ps;
    DWORD tmp = GetLogicalDriveStrings(0,NULL);
    HANDLE hHeap = GetProcessHeap();
    LPSTR Driv = (LPSTR)HeapAlloc(hHeap,0,tmp);
    //char arr[1024];
    GetLogicalDriveStrings(sizeof(arr),arrr);
    char a[100];
    ZeroMemory(&ps,sizeof(ps));
    HDC hdc = BeginPaint(hwnd, &ps);
    wsprintf(a,"DWORD=%s",arr);
    TextOut(hdc,40,100,a,sizeof(a));
    EndPaint(hwnd,&ps);
    //HeapFree(hHeap,0,Driv);
}

void OnPaint(HWND hwnd)
{
    PAINTSTRUCT ps;
    char arr[1024], *b;
    GetLogicalDriveStrings(sizeof(arr),arr);
    b = arr;
    int y =100;
    ZeroMemory(&ps,sizeof(ps));
    HDC hdc = BeginPaint(hwnd, &ps);
    SetBkMode(hdc,0);
    while( *b != 0 )
    {
        TextOut(hdc,40,y+=20,b,strlen(b));
        b=b+4;
    }
    EndPaint(hwnd,&ps);
}