Visual Basic Programming Code Examples

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Show the 'System Settings Changed, Restart Computer' dialog

Show the 'System Settings Changed, Restart Computer' dialog

Often at the end of a setup process the user will be prompted if they want to restart the computer. The following function uses an unsupported MS API to display this dialog. If the user clicks yes to this dialog the machine will restart.

Option Explicit

Private Declare Function SHRestartSystemMB Lib "shell32" Alias "#59" (ByVal hOwner As Long, ByVal sExtraPrompt As String, ByVal uFlags As Long) As Long
Private Declare Function GetActiveWindow Lib "user32" () As Long            'Use Me.hwnd in VB
Public Const EWX_LOGOFF = 0, EWX_SHUTDOWN = 1
Public Const EWX_REBOOT = 2, EWX_FORCE = 4, EWX_POWEROFF = 8

'Purpose     :  Gives the user the option to restarts the local machine
'               showing the message box "System Settings Change", "You must
'               restart your computer before the new settings will take effect."
'Inputs      :  [sExtraMessage]     Any additional text you wish to show in the dialog
'               [lMode]             One of the EWX_ constants (See declarations)
'Outputs     :  Returns 7 is the user clicks No, else returns 0.
'Notes       :  If the User Clicks "Yes" the computer will restart.


Function SystemUpdatedRestart(Optional ByVal sExtraMessage As String = vbNullString, Optional lMode As Long = EWX_REBOOT) As Long

    On Error Resume Next
    If Len(sExtraMessage) Then
        'Format and convert extra message
        If Right$(sExtraMessage, 2) <> vbNewLine Then
            sExtraMessage = sExtraMessage & vbNewLine & vbNewLine
        End If
        sExtraMessage = StrConv(sExtraMessage, vbUnicode)
    End If
    SystemUpdatedRestart = SHRestartSystemMB(GetActiveWindow, sExtraMessage, EWX_FORCE)
    On Error GoTo 0
End Function