[python-win32] Request for comments

[Michel Claveau]

Hi!

For IPC.Mailslot, if you need, you can look my little example-code (below).
Tested for compatibility with Vista.waitfor.exe ;     and tested  XP <=> 
Vista via LAN
(sorry for my bad english)

@-salutations
--
Michel Claveau




# -*- coding: cp1252 -*-

def mailslotserver(duree=999999, systemname='.', mailslotname="waitfor.exe", 
signal="SIGNAL"):
    """Attend (surveille) un mailslot
    Exemple :
       flag,data=mailslot.mailslotserver( duree=600, systemname=".", 
mailslotname="waitfor.exe", signal="SIGNAL" )
    """
    import ctypes, win32file
    myslot = '\\\\'+systemname+'\\mailslot\\'+mailslotname+'\\'+signal
    nbs=ctypes.c_long(duree*1000)
    hReceive = ctypes.windll.kernel32.CreateMailslotA(myslot, 0, nbs, 0)
    if hReceive == -1:
        data="Access error to Mailslot"
        return False,data
    buffer = win32file.AllocateReadBuffer(400)
    try:
        rc, data = win32file.ReadFile(hReceive, buffer)
    except:
        data="out of time"
        return False,data
    return True,data

def mailslotclient( systemname='.', mailslotname="waitfor.exe", 
signal="SIGNAL", data='ABC'):
    """Envoie un message par mailslot
    Exemples :
       mailslotclient( systemname="*", mailslotname="waitfor.exe", 
signal="SIGNAL", data="TESTCLIENT et c'est noël €" )
       mailslotclient( systemname="ServeurCPQ", mailslotname="waitfor.exe", 
signal="SYNCHRO", data="Terminé" )
    """
    import win32file,win32con
    #print  23,'\\\\'+systemname+'\\mailslot\\'+mailslotname+'\\'+signal
    mailslot = 
win32file.CreateFile('\\\\'+systemname+'\\mailslot\\'+mailslotname+'\\'+signal, 
win32file.GENERIC_WRITE, 0, None, win32con.CREATE_NEW, 0, None)
    #print 24,"mailslot",mailslot
    import time
    time.sleep(0.1)
    win32file.WriteFile(mailslot, data)
    mailslot.Close()

if __name__ == '__main__':
    import sys
    if len(sys.argv)>1:
        if sys.argv[1].upper()[:4]=="SERV":
            flag,data=mailslotserver(duree=9, systemname=".", 
mailslotname="waitfor.exe", signal="SIGNAL")
            print "Résultat : ",flag,"  (",data,") "
        else:
            mailslotclient(systemname=".", mailslotname="waitfor.exe", 
signal="SIGNAL", data="TESTCLIENT")