watchdog ???

Bonjour jc2nantes,
jc2nantes a écrit :

Salut,

Je souhaite faire une petite appli qui, en tache de fond, regarderait si
l'appli principale tourne et qui, dans le cas contraire, serait capable de
la relancer. Le tout en tenant à jour un journal des evenements...??? un
watchdog quoi...

merci bien de vos astuces...

Une piste (très) inspirée de :

http://support.microsoft.com/?kbid9796

Option Explicit

Private Type STARTUPINFO
cb As Long
lpReserved As String
lpDesktop As String
lpTitle As String
dwX As Long
dwY As Long
dwXSize As Long
dwYSize As Long
dwXCountChars As Long
dwYCountChars As Long
dwFillAttribute As Long
dwFlags As Long
wShowWindow As Integer
cbReserved2 As Integer
lpReserved2 As Long
hStdInput As Long
hStdOutput As Long
hStdError As Long
End Type

Private Type PROCESS_INFORMATION
hProcess As Long
hThread As Long
dwProcessID As Long
dwThreadID As Long
End Type

Private Declare Function WaitForSingleObject Lib "kernel32" (ByVal _
hHandle As Long, ByVal dwMilliseconds As Long) As Long

Private Declare Function CreateProcessA Lib "kernel32" (ByVal _
lpApplicationName As String, ByVal lpCommandLine As String, ByVal _
lpProcessAttributes As Long, ByVal lpThreadAttributes As Long, _
ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, _
ByVal lpEnvironment As Long, ByVal lpCurrentDirectory As String, _
lpStartupInfo As STARTUPINFO, lpProcessInformation As _
PROCESS_INFORMATION) As Long

Private Declare Function CloseHandle Lib "kernel32" _
(ByVal hObject As Long) As Long
Private Declare Function GetExitCodeProcess Lib "kernel32" _
(ByVal hProcess As Long, lpExitCode As Long) As Long

Private Const NORMAL_PRIORITY_CLASS = &H20&
Private Const INFINITE = -1&

Public Function ExecCmd(CmdLine As String)
Dim proc As PROCESS_INFORMATION
Dim start As STARTUPINFO
Dim lResult As Long

' Initialisez la structure STARTUPINFO :
start.cb = Len(start)
' Démarrez l'application Shell :
lResult = CreateProcessA(vbNullString, CmdLine, 0&, 0&, 1&, _
NORMAL_PRIORITY_CLASS, 0&, vbNullString, start, proc)

' Attendre la fin de l'application Shell :
lResult = WaitForSingleObject(proc.hProcess, INFINITE)
GetExitCodeProcess proc.hProcess, lResult
CloseHandle proc.hThread
CloseHandle proc.hProcess
ExecCmd = lResult
End Function

Private Sub Command1_Click()
Dim lResult As Long
Dim Rep As Integer

MsgBox "Processus lancé le " & Now
Do
lResult = ExecCmd("notepad.exe")
MsgBox "Processus arrêté le " & Now
Rep = MsgBox("Voulez vouz relancer le processus ?", _
vbQuestion Or vbYesNo)
If Rep = vbNo Then Exit Do
MsgBox "Processus relancé le " & Now
Loop While True
Unload Me
End Sub



--
Cordialement,

Jacques.