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LAnnProtractor::GetPoints

#include "ltwrappr.h"

virtual L_INT LAnnProtractor::GetPoints(pPoints)

pointer to an array

Fills the specified array of ANNPOINT structures with the endpoints of the ruler object.

Parameter	Description
pPoints	Pointer to the array to be filled with the vertices of the protractor object.

Returns

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

Comments

The ANNPOINT structure is like a Windows POINT structure, except that it uses double-precision floating point values.

Coordinates of an object's points are relative to its container object. The coordinates are interpreted using the container's scaling factors and offsets, which are described in Low-Level Coordinate System for Annotations.

The order of the vertices in the array is shown below:

$image\ProPoint.gif$

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 LAnnProtractor_GetPointsExample() 
{ 
   LBitmap MyBitmap; 
   LAnnProtractor MyAnnProtractor; 
 
   ANNPOINT MyPts[3] = { 40,40, 
                         140,40, 
                         140,140 
                       }; 
 
   pANNPOINT pMyPts = MyPts; 
   MyAnnProtractor.SetPoints(pMyPts, 3); 
 
   L_UINT uPointCount = MyAnnProtractor.GetPointCount(); 
   HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, sizeof(ANNPOINT) * uPointCount); 
   pANNPOINT pAnnPoint = (pANNPOINT)GlobalLock(hGlobal); 
 
   MyAnnProtractor.GetPoints(pAnnPoint); 
 
   for (unsigned int i=0; i<uPointCount; i++) 
   { 
      L_TCHAR szTemp[100]; 
 
      wsprintf(szTemp, TEXT("[%d]Point(%d, %d)"), i, (int)pAnnPoint[i].x, (int)pAnnPoint[i].y); 
      AfxMessageBox(szTemp); 
   } 
 
   GlobalFree(hGlobal); 
 
   return SUCCESS; 
}

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Summary of Features

Functions:	Class Members
Topics:	Annotation Functions: Getting and Setting Geometric Properties
	Annotation Functions: Using Window Coordinates to Define an Object
	Key Annotation Features
	Calibrating Annotation Ruler Objects