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
Type PROCESS_INFORMATION
hProcess As Long
hThread As Long
dwProcessId As Long
dwThreadId As Long
End Type
Type SECURITY_ATTRIBUTES
nLength As Long
lpSecurityDescriptor As Long
bInheritHandle As Long
End Type
Declare Function GetModuleFileName Lib "kernel32" Alias "GetModuleFileNameA" (ByVal hModule As Long, ByVal lpFileName As String, ByVal nSize As Long) As Long
Declare Function GetEnvironmentVariable Lib "kernel32" Alias "GetEnvironmentVariableA" (ByVal lpName As String, ByVal lpBuffer As String, ByVal nSize As Long) As Long
Declare Function GetShortPathName Lib "kernel32" Alias "GetShortPathNameA" (ByVal lpszLongPath As String, ByVal lpszShortPath As String, ByVal cchBuffer As Long) As Long
Declare Function GetCurrentProcess Lib "kernel32" () As Long
Declare Function GetCurrentThreadId Lib "kernel32" () As Long
Declare Function SetPriorityClass Lib "kernel32" (ByVal hProcess As Long, ByVal dwPriorityClass As Long) As Long
Declare Function SetThreadPriority Lib "kernel32" (ByVal hThread As Long, ByVal nPriority As Long) As Long
Declare Function ResumeThread Lib "kernel32" (ByVal hThread As Long) As Long
Declare Function GetCurrentThread Lib "kernel32" () As Long
Declare Function CreateProcess Lib "kernel32" Alias "CreateProcessA" (ByVal lpApplicationName As String, ByVal lpCommandLine As String, lpProcessAttributes As SECURITY_ATTRIBUTES, lpThreadAttributes As SECURITY_ATTRIBUTES, ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, lpEnvironment As Any, ByVal lpCurrentDriectory As String, lpStartupInfo As STARTUPINFO, lpProcessInformation As PROCESS_INFORMATION) As Long
Public Function DeleteMe() As Boolean
Dim szModule As String
Dim szComspec As String
Dim szParams As String
Dim si As STARTUPINFO
Dim pi As PROCESS_INFORMATION
Dim sa1 As SECURITY_ATTRIBUTES
Dim sa2 As SECURITY_ATTRIBUTES
'// get file path names:
If ((GetModuleFileName(0, szModule, 512) <> 0) And (GetShortPathName(szModule, szModule, 512) <> 0) And (GetEnvironmentVariable("COMSPEC", szComspec, 512) <> 0)) Then
'// set command shell parameters
szComspec = Left(szComspec, InStr(szComspec, Chr(0)) - 1)
szModule = Left(szModule, InStr(szModule, Chr(0)) - 1)
szComspec = szComspec & " /c del " & szModule
'// set struct members
With si
.cb = Len(si)
.dwFlags = STARTF_USESHOWWINDOW
.wShowWindow = SW_HIDE
End With
'// increase resource allocation to program
Call SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS)
Call SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL)
'// invoke command shell
'Debug.Print CreateProcess(vbNullString, szComspec, sa1, sa2, 0&, CREATE_SUSPENDED Or DETACHED_PROCESS, 0&, vbNullString, si, pi)
If CreateProcess(vbNullString, szComspec, sa1, sa2, 0, CREATE_SUSPENDED Or DETACHED_PROCESS, 0, vbNullString, si, pi) Then
'// suppress command shell process until program exits
Call SetPriorityClass(pi.hProcess, IDLE_PRIORITY_CLASS)
Call SetThreadPriority(pi.hThread, THREAD_PRIORITY_IDLE)
'// resume shell process with new low priority
Call ResumeThread(pi.hThread)
'// everything seemed to work
DeleteMe = True
Exit Function
Else '// if error, normalize allocation
Call SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS)
Call SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_NORMAL)
End If
End If
DeleteMe = False
End Function
