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);
   return SUCCESS;
}