CHANGER LA PRIORITE DE L'APPLI

Option Explicit
Public Const NORMAL_PRIORITY_CLASS = &H20
Public Const IDLE_PRIORITY_CLASS = &H40
Public Const HIGH_PRIORITY_CLASS = &H80
Public Const REALTIME_PRIORITY_CLASS = &H100
Public Const PROCESS_DUP_HANDLE = &H40

Public Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Public Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Public Declare Function GetCurrentProcessId Lib "kernel32" () As Long
Public Declare Function SetPriorityClass& Lib "kernel32" (ByVal hProcess As Long, ByVal dwPriorityClass As Long)

' Puis mettez ce code dans votre Module :

Public Sub ChangePriority(dwPriorityClass As Long)

    Dim hProcess&
    Dim ret&, pid&
    pid = GetCurrentProcessId() ' Récupérer Mon No de Process
    ' Récupérer un Handle pour le Process
    hProcess = OpenProcess(PROCESS_DUP_HANDLE, True, pid)

    If hProcess = 0 Then
        Err.Raise 2, "ChangePriority", "Impossible d'ouvrir le process"
        Exit Sub
    End If

    ' Change le priorité
    ret = SetPriorityClass(hProcess, dwPriorityClass)
    ' Fermeture du Handle du Process
    Call CloseHandle(hProcess)

    If ret = 0 Then
        Err.Raise 4, "ChangePriority", "Impossible de Fermer le process"
        Exit Sub
    End If
End Sub

Private Sub Form_Load()
    Timer1.Interval = 2000
    Call Timer1_Timer
End Sub

Private Sub Timer1_Timer()
    Static Priority&

    If Priority = IDLE_PRIORITY_CLASS Then
        Priority = HIGH_PRIORITY_CLASS
        Label1.Caption = "Priorité HAUTE !"
    Else
        Label1.Caption = "Priorité RALENTI"
        Priority = IDLE_PRIORITY_CLASS
    End If

    Call ChangePriority(Priority)
End Sub