Gets the current unit of measurement values set by the LAnnPolyRuler::SetUnit function.


#include "ltwrappr.h"

virtual L_UINT LAnnPolyRuler::GetUnit(pUnitAbbrev, puUnivAbbrevLen, puPrecision)


L_TCHAR * pUnitAbbrev

Character string to be updated with the unit abbreviation string to be displayed after the distance.

L_SIZE_T * puUnivAbbrevLen

Address of the variable to be updated with the length of the unit abbreviation string.

L_UINT * puPrecision

Pointer to a variable to be updated with the number of digits to be displayed after the decimal place.


Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.


The following annotation objects utilize one or more rulers as part of the annotation:

In addition, the Polyruler object (ANNOBJECT_POLYRULER) stores default ruler settings along with the other object default settings.

To determine the unit of measure for each ruler as well as its precision, call the LAnnPolyRuler::GetUnit function. The default unit of measure for Ruler, Polyruler, and Crossproduct objects is Smart English. With the smart units, the unit changes with the length. For example, if the length is 11 inches (assuming the default precision of 2 is being used), "11.00 in" displays whereas if the length is 15 inches, "1 ft 3.00 in" displays. Call the LAnnPolyRuler::SetUnit function to set the unit of measurement and its precision for the ruler. The precision indicates how many digits to display to the right of the decimal point in the length.

Required DLLs and Libraries


Win32, x64.

See Also




// This example get unit in Polyruler object

L_INT LAnnPolyRuler_GetUnitExample()  
   LAnnPolyRuler annPolyRuler; 
   L_TCHAR UnitAbbrev[256]; 
   L_SIZE_T uUnivAbbrevLen; 
   L_UINT uPrecision; 
   L_INT nUnit; 
   nUnit = annPolyRuler.GetUnit(UnitAbbrev, &uUnivAbbrevLen, &uPrecision); 
   return SUCCESS; 

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