public Autodesk.Revit.UI.Result Execute(
Autodesk.Revit.UI.ExternalCommandData commandData,
ref string message, Autodesk.Revit.DB.ElementSet elementSet)
{
UIApplication uiApp = new UIApplication(commandData.Application.Application);
bool error = false;
try
{
// if the browser window/process is already open, activate it instead of opening a new process
if (MessageHandler.library_pid != 0)
{
// the following line could be enough, but rather activate the window thru the process
//SetForegroundWindow(MessageHandler.browser_hwnd);
// try to activate the existing instance
Process[] processes = Process.GetProcesses();
foreach (Process p in processes)
{
if (p.Id == MessageHandler.library_pid)
{
IntPtr windowHandle = p.MainWindowHandle;
SetForegroundWindow(windowHandle);
return(Result.Succeeded);
}
}
}
// execute the library window process
Process process = new Process();
process.StartInfo.FileName = AssemblyDirectory + "\\Part_Library_App.exe ";
process.StartInfo.Arguments = App.messagehandler.Handle.ToString(); // pass the MessageHandler's window handle the the process as a command line argument
process.Start();
MessageHandler.library_pid = process.Id; // grab the PID so we can kill the process if required;
ExternalEventPL.RunExternal();
return(Result.Succeeded);
}
catch (Exception e)
{
// if revit threw an exception, try to catch it
TaskDialog.Show("Error", e.Message);
error = true;
return(Autodesk.Revit.UI.Result.Failed);
}
finally
{
// if revit threw an exception, display error and return failed
if (error)
{
TaskDialog.Show("Error", "Part Library failed.");
}
}
}
public static void RunExternal()
{
// A new handler to handle request posting by the dialog
m_ExHandler = new ExternalEventPL();
// External Event for the dialog to use (to post requests)
m_ExEvent = ExternalEvent.Create(m_ExHandler);
Thread _thread = new Thread(CheckForChanges);
_thread.Start();
return;
}