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'Непонятно про что было сказанно ">этой самой запущенной программы", но тем не менее: 'Держи, выдрал из своей про-ги. Меняет приоритет для приложения по полному пути к EXE_шнику... 'в модуль: Option Explicit Public Const TH32CS_SNAPPROCESS As Long = 2&
Public Const MAX_PATH As Integer = 260
Public Type PROCESSENTRY32
dwSize As Long
cntUsage As Long
th32ProcessID As Long
th32DefaultHeapID As Long
th32ModuleID As Long
cntThreads As Long
th32ParentProcessID As Long
pcPriClassBase As Long
dwFlags As Long
szExeFile As String * MAX_PATH
End Type Public Declare Function CreateToolhelpSnapshot Lib "kernel32" Alias "CreateToolhelp32Snapshot" (ByVal lFlags As Long, ByVal lProcessID As Long) As Long
Public Declare Function SetPriorityClass Lib "kernel32" (ByVal hProcess As Long, ByVal dwPriorityClass As Long) As Long
Public Const IDLE_PRIORITY_CLASS = &H40
Public Const NORMAL_PRIORITY_CLASS = &H20
Public Const HIGH_PRIORITY_CLASS = &H80
Public Const REALTIME_PRIORITY_CLASS = &H100
Public Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Public Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Public Declare Function ProcessFirst Lib "kernel32" Alias "Process32First" (ByVal hSnapshot As Long, uProcess As PROCESSENTRY32) As Long
Public Declare Function ProcessNext Lib "kernel32" Alias "Process32Next" (ByVal hSnapshot As Long, uProcess As PROCESSENTRY32) As Long
Public Function PriorityApp(myName As String, mySPrior As Long) As Boolean
Const PROCESS_ALL_ACCESS = 0
Dim uProcess As PROCESSENTRY32
Dim rProcessFound As Long
Dim hSnapshot As Long
Dim szExename As String
Dim exitCode As Long
Dim myProcess As Long
Dim AppSet As Boolean
Dim appCount As Integer
Dim i As Integer
appCount = 0
uProcess.dwSize = Len(uProcess)
hSnapshot = CreateToolhelpSnapshot(TH32CS_SNAPPROCESS, 0&
rProcessFound = ProcessFirst(hSnapshot, uProcess)
Do While rProcessFound
i = InStr(1, uProcess.szExeFile, Chr(0))
szExename = LCase$(Left$(uProcess.szExeFile, i - 1))
If Right$(szExename, Len(myName)) = LCase$(myName) Then
AppSet = True
appCount = appCount + 1
myProcess = OpenProcess(PROCESS_ALL_ACCESS, False, uProcess.th32ProcessID)
AppSet = SetPriorityClass(myProcess, mySPrior)
Exit Function
End If
rProcessFound = ProcessNext(hSnapshot, uProcess)
Loop
Call CloseHandle(hSnapshot)
End Function 'в форму или куда хошь...
'ставит калькулятору реал-тайм (самый высокий) приоритет. Private Sub Command1_Click()
Call PriorityApp("C:\Windows\calc.exe", REALTIME_PRIORITY_CLASS)
End Sub 
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