Rysunek Techniczny: Linia odniesienia

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This page is a translated version of the page TechDraw LeaderLine and the translation is 5% complete.
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TechDraw LeaderLine.svg TechDraw LeaderLine

Menu location
TechDraw → Add Lines → Add Leaderline to View
Default shortcut
Introduced in version
See also
TechDraw Rich Text Annotation, TechDraw Welding Symbol, TechDraw Line Group


The LeaderLine tool adds a line to a View. Other annotation objects (such as Rich Text Annotations) can be connected to the leaderline to form complex annotations.

TechDraw LeaderLine sample.png

Leaderline added to View001


  1. Select a view.
  2. Press the TechDraw LeaderLine.svg Add Leaderline to View button. A dialog will open allowing to draw the leaderline and assigning end symbols to the line.
  3. Click on Pick points and then click into the page to define the starting point of the line.
  4. Move the mouse and click on another point to create a line. Hold Ctrl to snap to multiples of 22.5° angles.
  5. Now you can either
    1. finish the line drawing by double-clicking or pressing Save Points.
    2. add further points to define more line segments.
  6. To finish the creation, press OK to close the dialog.

Note: If you did not define any points when creating the leaderline, a short line will be placed at the center of the view.


  1. Select the Leaderline in the document tree and double-click on it.
  2. A dialog will open where you can change the appearance.
  3. To edit the points, click on Edit points and the line points become visible in the drawing.
  4. Drag the points to a place you like and finish the change by clicking on Save changes.


  • DANEX,Y: The point at which the leaderline is connected to the View.
  • DANELeader Parent: The View to which the leader is attached.
  • DANEStart Symbol: The symbol at the start: Arrownone.svg None, Arrowfilled.svg Filled Arrow, Arrowopen.svg Open Arrow, Arrowtick.svg Tick, Arrowdot.svg Dot, Arrowopendot.svg Open Circle, Arrowfork.svg Fork, Arrowpyramid.svg Filled Triangle
  • DANEEnd Symbol: The symbol at the end.
  • DANEWayPoints: Nodes on the leaderline.
  • DANEScalable: Leader scales with Leader Parent.
  • DANEAuto Horizontal: Forces last leaderline segment to be horizontal.
  • WIDOKColor: Pen colour for the leaderline.
  • WIDOKLine Style: 0 NoLine, 1 Continuous-line.svg Continuous, 2 Dash-line.svg Dash, 3 Dot-line.svg Dot, 4 DashDot-line.svg DashDot, 5 DashDotDot-line.svg DashDotDot
  • WIDOKLine Width: Width of leaderline.


See also: TechDraw API and FreeCAD Scripting Basics.

The LeaderLine tool can be used in macros and from the Python console by using the following functions:

myPage = FreeCAD.ActiveDocument().Page
myBase = FreeCAD.ActiveDocument().View
leaderObj = FreeCAD.ActiveDocument.addObject('TechDraw::DrawLeaderLine','DrawLeaderLine')
FreeCAD.activeDocument().leaderObj.LeaderParent = myBase
#first waypoint is always (0,0,0)  
#rest of waypoints are positions relative to (0,0,0)
leaderObj.WayPoints = [p0,p1,p2]
leaderObj.X = 5
leaderObj.Y = 5


  • You can edit a Leaderline by double clicking on it in the tree view. Double clicking in the graphics area is not yet supported. The line segment(s) can be edited by pressing Edit points. To exit the point editing, press Save changes or Discard changes.
  • If you did not define any points when creating the leaderline, a short line will be placed at the center of the view. You can later not add further points.
  • By default the preferences option Leader Line Auto Horizontal is activated. Therefore the last line segment will be horizontal. So if you only have one segment, you get a horizontal line, no matter where you picked the second point.
  • You can turn off the auto horizontal feature for existing Leaderlines changing the DANEAuto Horizontal property.