title: Draw line while picking line's points in Revit 2014
body: <p>I'm trying to figure out if there is a way to programmatically allow the user to draw a line in Revit 2014 or to call the model-line command (using the line option, not rectangle, circle, etc). I need that the user call my command, this command shows a form that have an option that is "Draw the path", if the user clicks that option the form should hide/close and the user should be able to draw a model line directly inside the project. When the user ends to draw the line the form should be re-shown and it should have a reference to the drawn line. </p>
  
  <p>I've searched all the day for a solution but found nothing, I've also search how to lunch a standard Revit command (such as model line) but the only way seems to call the <code>PostCommand</code> that will add the command to the queue and thus the command will be lunched after my command terminates. I've searched also how to draw a line having only the start point and positioning the endpoint under the mouse but it seems that the <code>MouseMove</code> event is not available on a Revit document..</p>
  
  <p>Really there is no way to ask the user to draw a line??</p>