Getting wrong hilighted text

Hello,

I have created a plugin to create a Annotation with sub type Highlight annotation.

Basically I created a custom menu "CreateAnnot" to highlight the text when I select the particular text.

Plugin creates a highlight annotation and displays a message box with the annotated text.

I will put the screenshot so that you will get clear idea.

In above image, while creating highlight annotation, I selected the middle line text and annotation created properly for that line.

However, It returns the highlighted text along-with below and upper line in the messagebox.

That means it returns whole paragraph.

I am not getting why this is happening.

Here is my code for getting the annotated text:

ACCB1 ASBool ACCB2 pdTextSelectEnumTextProc(void* procObj, PDFont font, ASFixed size, PDColorValue color, char* text, ASInt32 textLen)
{
  char stringBuffer[200];
  strcpy(stringBuffer, text);
  ss << stringBuffer;
  return true;
}

if (ASAtomFromString("Highlight") == PDAnnotGetSubtype(annot))
  {
  // Gets the annotation's rect
  PDAnnotGetRect(annot, &boundingRect);
  // Gets the text selection from the annotation's rect
  PDTextSelect textSelect = PDDocCreateTextSelect(pdDoc, pageNum, &boundingRect);
  // create a callback to get the text from highlighted bounding box
  PDTextSelectEnumText(textSelect, ASCallbackCreateProto(PDTextSelectEnumTextProc, &pdTextSelectEnumTextProc), &annBuf);
  MessageBox(NULL, ss.str().c_str(), NULL, NULL);
  }

Please let me know where I am going wrong?

Thanks.