Events

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Events

Im unten gezeigten Codefragment (aus dem Beispiel AutomateAuthenticDesktop) wird der Code für zwei Event Handler aufgelistet. Das Beispiel AutomateAuthenticDesktop (siehe Datei form1.cs) befindet sich im Ordner C# des Ordners API Examples:

 

Windows 7, Windows 8, Windows 10

C:\Benutzer\<Benutzername>\Dokumente\
Altova\Authentic2019\AuthenticExamples\API\

 

Sie können das Projekt von Visual Studio 2010/2012/2013/2015/2017 aus kompilieren und ausführen.

 

      delegate void addListBoxItem_delegate(string sText);

      // Called from the UI thread

      private void addListBoxItem(string sText)

       {

           listBoxMessages.Items.Add(sText);

       }

      // Wrapper method to call UI control methods from a worker thread

      void syncWithUIthread(Control ctrl, addListBoxItem_delegate methodToInvoke, String sText)

       {

          // Control.Invoke: Executes on the UI thread, but calling thread waits for completion before continuing.

          // Control.BeginInvoke: Executes on the UI thread, and calling thread doesn't wait for completion.

          if (ctrl.InvokeRequired)

               ctrl.BeginInvoke(methodToInvoke, new Object[] { sText });

       }

 

  // Event handler for OnDocumentOpened event

      private void handleOnDocumentOpened(XMLSpyLib.Document i_ipDocument)

       {

          String sText = "";

 

          if (i_ipDocument.Name.Length > 0)

               sText = "Document " + i_ipDocument.Name + " was opened!";

          else

               sText = "An empty document was created.";

 

          // Synchronize the calling thread with the UI thread because

          // COM events are triggered from a working thread

          addListBoxItem_delegate methodToInvoke = new addListBoxItem_delegate(addListBoxItem);

          // Call syncWithUIthread with the following arguments:

          // 1 - listBoxMessages - list box control to display messages from COM events

          // 2 - methodToInvoke  - a C# delegate which points to the method which will be called from the UI thread

          // 3 - sText           - the text to be displayed in the list box

           syncWithUIthread(listBoxMessages, methodToInvoke, sText);

       }

 

 

      private void checkBoxEventOnOff_CheckedChanged(object sender, EventArgs e)

       {

          if (AuthenticDesktop != null)

           {

              if (checkBoxEventOnOff.Checked)

                   AuthenticDesktop.OnDocumentOpened += new XMLSpyLib._IApplicationEvents_OnDocumentOpenedEventHandler(handleOnDocumentOpened);

              else

                   AuthenticDesktop.OnDocumentOpened -= new XMLSpyLib._IApplicationEvents_OnDocumentOpenedEventHandler(handleOnDocumentOpened);

           }

       }

 


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