LAnnotation::GetArea

#include "ltwrappr.h"

virtual L_INT LAnnotation::GetArea(puCount)

L_SIZE_T * puCount;

address of a variable to be updated

Gets the pixel count of the specified annotation object.

Parameter

Description

puCount

Address of the variable to be updated with the pixel count.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

The pixel count is the number of pixels contained in a region extracted from the annotation object, without resizing. It is equivalent to calling LAnnotation::GetRgnHandle with pRgnXForm set to NULL and then getting a pixel count of the resulting region.

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:

LAnnotation::GetRgnHandle

Topics:

Annotation Functions: Object Information

 

Implementing Annotations

 

Automated User Interface for Annotations

Example

L_INT LAnnotation_GetAreaExample() 
{ 
   LBitmap MyBitmap; 
   ANNRECT annRect; 
   L_SIZE_T uCount; 
 
   LAnnRectangle MyAnnRectangle; 
   annRect.left = 50; 
   annRect.top = 50; 
   annRect.right = 150; 
   annRect.bottom = 150; 
   MyAnnRectangle.SetRect(&annRect); 
 
   //Area = 101 x 101 
   MyAnnRectangle.GetArea(&uCount); 
 
   HRGN hRgn; 
   RECT rect; 
 
   //Bounding rectangle is (50,50,151,151) 
   MyAnnRectangle.GetRgnHandle(&hRgn); 
   GetRgnBox(hRgn, &rect); 
 
   DeleteObject(hRgn);  
 
   return SUCCESS; 
} 
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