update

bibtalk/bib-talk/MainWindow.xaml

@@ -104,7 +104,7 @@
                         <EllipseGeometry Center="40,40" RadiusX="40" RadiusY="40"/>
                     </Image.Clip>
                 </Image>
-                <Button Content="⋮" HorizontalAlignment="Left" Margin="638,8,0,0" VerticalAlignment="Top" Width="19" Height="70" Background="{x:Null}" BorderBrush="{x:Null}" Foreground="White" FontSize="58"/>
+                <Button Content="⋮" HorizontalAlignment="Left" Margin="638,8,0,0" VerticalAlignment="Top" Width="19" Height="70" Background="{x:Null}" BorderBrush="{x:Null}" Foreground="White" FontSize="58" Click="ChatFenster_Click"/>
             </Grid>
             <Grid Margin="76,17,454,176">
 

bibtalk/bib-talk/MainWindow.xaml.cs

@@ -189,9 +189,46 @@ namespace bib_talk
             public string IsOnline { get; set; }
         }
 
-        private void onlineUsersListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        private void ChatFenster_Click(object sender, RoutedEventArgs e)
         {
+            if (popup.IsOpen = true)
+            {
+                popup.Focus();
+            }
+            else
+            {
+                popup.IsOpen = true;
+            }
+
+        }
+        private void Button1_Click(object sender, RoutedEventArgs e)
+        {
+            MessageBox.Show("Button 1 wurde geklickt!");
+            ClosePopup();
+        }
+
+        private void Button2_Click(object sender, RoutedEventArgs e)
+        {
+            MessageBox.Show("Button 2 wurde geklickt!");
+            ClosePopup();
+        }
+
+        private void Button3_Click(object sender, RoutedEventArgs e)
+        {
+            MessageBox.Show("Button 3 wurde geklickt!");
+            ClosePopup();
+        }
+
+        private void Popup_LostFocus(object sender, RoutedEventArgs e)
+        {
+
+            ClosePopup();
+        }
+
+        private void ClosePopup()
+        {
+            popup.IsOpen = false;
+        }
 
     }
 }
-}