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LAnnAutomation::SetPolyFillMode

Summary

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

Syntax

#include "ltwrappr.h"

virtual L_INT LAnnAutomation::SetPolyFillMode(uPolyFillMode=ANNPOLYFILL_WINDING, uFlags=0)

Parameters

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

Reserved for future versions, use 0.

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 LAnnAutomation_AnnSetPolyFillModeExample(LAnnAutomation *pLAutomation) 
{ 
   L_INT nRet; 
   L_UINT PolyFillMode; /* Object's polygonal fill mode */ 
 
   /* Change the fill mode */ 
   PolyFillMode = pLAutomation->GetPolyFillMode(); 
   if (PolyFillMode == ANNPOLYFILL_WINDING) 
   { 
      nRet =pLAutomation->SetPolyFillMode (ANNPOLYFILL_ALTERNATE, 0); 
      if(nRet != SUCCESS) 
         return nRet; 
   } 
   else 
   { 
      nRet = pLAutomation->SetPolyFillMode(ANNPOLYFILL_WINDING, 0); 
      if(nRet != SUCCESS) 
         return nRet; 
   } 
   return SUCCESS; 
}