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L_AnnSetPolyFillMode

Summary

Sets the value that determines how a polygonal annotation with crossing lines is filled.

Syntax

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnSetPolyFillMode(hObject, uPolyFillMode, uFlags)

Parameters

HANNOBJECT hObject

Handle to the annotation object.

L_UINT uPolyFillMode

The constant that specifies the polygon fill mode. Possible polygon fill mode values are:

Value	Meaning
ANNPOLYFILL_WINDING	[0] All pixels that are inside the resulting exterior lines are filled.
ANNPOLYFILL_ALTERNATE	[1] The filled area includes the area between odd-numbered and even-numbered polygon sides on each scan line.

$image\winding.gif$

L_UINT 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

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

Comments

This function affects only polygon objects. For descriptions of the various types of objects and their properties, refer to Types of Annotations.

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.

Example

L_INT AnnSetPolyFillModeExample(HANNOBJECT hAnnObject) 
{ 
   L_INT nRet; 
   L_UINT   PolyFillMode; /* Object's polygonal fill mode */ 
 
   /* Change the fill mode */ 
   nRet = L_AnnGetPolyFillMode(hAnnObject, &PolyFillMode); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   if (PolyFillMode == ANNPOLYFILL_WINDING) 
   { 
      nRet = L_AnnSetPolyFillMode(hAnnObject, ANNPOLYFILL_ALTERNATE, 0); 
      if (nRet != SUCCESS) 
         return nRet; 
   } 
   else 
   { 
      nRet = L_AnnSetPolyFillMode(hAnnObject, ANNPOLYFILL_WINDING, 0); 
      if (nRet != SUCCESS) 
         return nRet; 
   } 
 
   return SUCCESS; 
}