Option Explicit
DefInt A-Z

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

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 Long, 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 Long, lpStartupInfo As STARTUPINFO, lpProcessInformation As PROCESS_INFORMATION) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

Dim Path As String
Private Sub ExecCmd(CmdLine As String)
 Dim proc As PROCESS_INFORMATION
 Dim start As STARTUPINFO
 Dim ret&

 '
 ' Initialize the STARTUPINFO structure:
 '
 start.cb = Len(start)
 
 '
 ' Start the shelled application:
 '
 ret& = CreateProcessA(0&, CmdLine, 0&, 0&, 1&, NORMAL_PRIORITY_CLASS, 0&, 0&, start, proc)
 
 '
 ' Wait for the shelled application to finish:
 '
 ret& = WaitForSingleObject(proc.hProcess, INFINITE)
 ret& = CloseHandle(proc.hProcess)
 
 MsgBox "process has finished"
End Sub
Private Sub cmdStart_Click()

    Me.Hide
    Dim program_name As String
    program_name = App.Path & "\7za e data.zip -y"
    ExecCmd program_name
    Kill App.Path & "\Data.zip"
    Me.Show
End Sub
Private Sub Form_Load()
 Path = App.Path

 If Right$(Path, 1) <> "\" Then Path = Path & "\"

 Me.Show
End Sub