#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnSetProtractorOptions(hObject, bAcute, uUnit, pszAbbrev, uPrecision, dArcRadius, uFlags)


handle to the annotation object

L_BOOL bAcute;

flag that indicates which angle to set

L_UINT uUnit;

flag that indicates the units of the angle

L_TCHAR *pszAbbrev;

address of the character string containing the unit abbreviation string

L_UINT uPrecision;

number of digits

L_DOUBLE dArcRadius;

 length of the arc radius 

L_UINT uFlags;

flag that determine which objects to process

Sets various options for a Protractor object.

Parameter Description
hObject Handle to the annotation object.
bAcute Flag that indicates whether to draw the inside (acute or <180 degrees) angle or the outside (obtuse or >180 degrees) angle of the protractor. Possible values are:
  Value Meaning
  TRUE Draw the inside (acute) angle of the protractor.
  FALSE Draw the outside (obtuse) angle of the protractor.
uUnit Flag that indicates the units of the angle. Possible values are:
  Value Meaning
  ANNANGLE_DEGREES Measure the angle in degrees. The default abbreviation for this unit is the degree sign.
  ANNANGLE_RADIANS Measure the angle in radians. The default abbreviation for this unit is "rad".
pszAbbrev Character string that contains the abbreviation to be put after the angle. Use NULL to set the default abbreviation for the specified unit.
uPrecision The number of digits after the decimal. ( "." ) Valid values are 0 200.
dArcRadius The arc radius.
uFlags Flags that determine which objects to process. Most of the flags apply only to container objects. You can combine values when appropriate by using a bitwise OR ( | ). The following are valid values:
  Value Meaning
  0 Process only the specified object.
  ANNFLAG_SELECTED [0x0001] Process only objects that have the selected property set to TRUE. For getting and setting the selected property, use the L_AnnGetSelected and L_AnnSetSelected functions.
  ANNFLAG_NOTTHIS [0x0004] Process only one level of objects within the specified container, not the container itself. If there are containers within the container, they are modified, but the objects within them are not.
  ANNFLAG_RECURSE [0x0008] Process objects within a container, and within any subcontainers, down to any level.
  ANNFLAG_NOTCONTAINER [0x0002] (Used with ANNFLAG_RECURSE) Process objects within containers, not the containers themselves.
  ANNFLAG_NOINVALIDATE [0x0010] Do not invalidate the affected rectangle in the window. Use this to avoid generating unwanted paint messages.



The function was successful.

< 1

An error occurred. Refer to Return Codes.


Note: This function can be called for Container objects, allowing you to change Protractor objects within the container. The objects to change are determined by the settings in uFlags.

Required DLLs and Libraries


For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.


Win32, x64.

See Also


L_AnnGetProtractorOptions, L_AnnGetAngle


Annotation Functions: Object Properties


Annotation Objects - Default Values


Annotation Objects - Automated Features


Implementing an Automated Annotation Program


Implementing a Non-automated Annotation Program


Altering Annotation Object Settings


L_INT EXT_CALLBACK ProtractorOptionsAnnEnumCallback(HANNOBJECT   hObject, 
                                   L_VOID*       pUserData) 
   L_UINT   Type, Unit; 
   L_BOOL   Acute; 
   L_DOUBLE Radius; 
   L_AnnGetType(hObject, &Type); 
      L_AnnGetProtractorOptions(hObject, &Acute, &Unit, NULL, NULL, NULL, &Radius); 
      if (Acute == TRUE) 
         Acute = FALSE; 
         Acute = TRUE; 
      if (Unit == ANNANGLE_DEGREES) 
         Unit = ANNANGLE_RADIANS; 
         Unit = ANNANGLE_DEGREES; 
      if (Radius >= 25) 
         Radius = 10; 
         Radius = 25; 
      L_AnnSetProtractorOptions(hObject, Acute, Unit, NULL, 2, Radius, 0); 
      MessageBox(NULL, TEXT("This object is not a protractor."), TEXT("Notice"), MB_OK); 
   return SUCCESS; 
L_INT AnnSetProtractorOptionsExample(HANNOBJECT hContainer) 
   L_INT nRet; 
   nRet = L_AnnEnumerate(hContainer, (ANNENUMCALLBACK) ProtractorOptionsAnnEnumCallback, NULL, ANNFLAG_RECURSE|ANNFLAG_SELECTED, NULL); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
Help Version 20.0.2019.3.12
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Raster Imaging C API Help