Fixed prevent shutdown while minimized bug with issue #77

GBM/Forms/frmMain.vb

@@ -1649,7 +1649,8 @@ Public Class frmMain
             ShutdownApp()
         End If
 
-        'Intercept Exit
+        Select Case e.CloseReason
+            Case CloseReason.UserClosing
                 If bShutdown = False Then
                     e.Cancel = True
                     If Not mgrCommon.IsUnix Then
@@ -1659,6 +1660,10 @@ Public Class frmMain
                         Me.ShowInTaskbar = False
                     End If
                 End If
+            Case CloseReason.TaskManagerClosing, CloseReason.WindowsShutDown
+                'Do nothing and let the app close without warning
+        End Select
+
     End Sub
 
     Private Sub AutoRestoreEventProcessor(myObject As Object, ByVal myEventArgs As EventArgs) Handles tmRestoreCheck.Elapsed