L_AnnSetProtractorOptions

#include "l_bitmap.h"

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

HANNOBJECT hObject;	/* 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.

Returns

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

Comments

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

LTANN

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

Platforms

Win32, x64.

See Also

Functions:	L_AnnGetProtractorOptions, L_AnnGetAngle
Topics:	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

Example

L_INT EXT_CALLBACK ProtractorOptionsAnnEnumCallback(HANNOBJECT   hObject,
                                   L_VOID*       pUserData)
{
   UNREFERENCED_PARAMETER(pUserData);
   L_UINT   Type, Unit;
   L_BOOL   Acute;
   L_DOUBLE Radius;

   L_AnnGetType(hObject, &Type);
   switch(Type)
   {
   case ANNOBJECT_PROTRACTOR:
      L_AnnGetProtractorOptions(hObject, &Acute, &Unit, NULL, NULL, NULL, &Radius);
      if (Acute == TRUE)
         Acute = FALSE;
      else
         Acute = TRUE;
      if (Unit == ANNANGLE_DEGREES)
         Unit = ANNANGLE_RADIANS;
      else
         Unit = ANNANGLE_DEGREES;
      if (Radius >= 25)
         Radius = 10;
      else
         Radius = 25;
      L_AnnSetProtractorOptions(hObject, Acute, Unit, NULL, 2, Radius, 0);
      break;

   default:
      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;
}