Messenger Flackern, DBL Buffer

VERAG_PROG_ALLGEMEIN/cProgramFunktions.vb

@@ -1,6 +1,7 @@
 Imports System.Drawing
 Imports System.IO
 Imports System.Net.Mail
+Imports System.Reflection
 Imports System.Text
 Imports System.Windows.Forms
 Imports ClosedXML.Excel
@@ -94,7 +95,11 @@ Public Class cProgramFunctions
 
     End Function
 
+    Public Shared Sub SetDoubleBuffered([Control] As Control)
+        [Control].GetType().InvokeMember("DoubleBuffered", BindingFlags.SetProperty Or
+BindingFlags.Instance Or BindingFlags.NonPublic, Nothing, [Control], New Object() {True})
 
+    End Sub
     Public Shared Function fktEuroKurs(varVonWährung As Object, Rechnungsdatum As Date) As Object 'Funktioniert nciht mit datum!!!!!!!!!!!!!!!!!!!
         '(FixeTaxe, "ATS", RECHNUNG.Währungscode)
         'Dim varVonWährung As Object