4. Overview Lines and Arrows¶

The attributes of line and arrow objects are set and get with the OBJ Functions. See Overview Drawing Objects

	Create and Destroy
LBCreate	LBCreate creates a line or arrow drawing object.
LBDestroy	The LBDestroy function destroys the given line object and frees any memory that the line object occupies.

	Get
LBGetArrowLength	LBGetArrowLength returns the length of the arrow tip of a line drawing object.
LBGetArrowWidth	LBGetArrowWidth returns the width of the arrow tip of a line drawing object.
LBGetP1P2	LBGetP1P2 returns the coordinates of the start and end point of a line drawing object.
LBGetProps	LBGetProps gets the text box properties.
LBIsEndArrow	LBIsEndArrow checks if the end of the line object has an arrow tip.
LBIsStartArrow	LBIsStartArrow checks if the start of the line object has an arrow tip.

	Set
LBSetArrowLength	LBSetArrowLength sets the arrow tip length of a line drawing object.
LBSetArrowWidth	LBSetArrowWidth sets the arrow tip width of a line drawing object.
LBSetEndArrow	LBSetEndArrow shows or hides the arrow tip of a line drawing object.
LBSetP1P2	LBSetP1P2
LBSetProps	LBSetProps sets the text box properties.
LBSetStartArrow	LBSetStartArrow shows or hides the arrow tip of a line drawing object.