國立暨南國際大學 99 學年度第二學期小考試卷

(考試時間: 16:30-16:45)

1. (10%) Please down load the project QUIZ 12 at http://ipv6.ncnu.org/Course/C_Programming.992/quiz-12.zip.  Uncompress and build it. Try to change the pen width.  What problem do you observe, and how should you correct it?

   CRect CElement::GetBoundRect(void)
   {
   	CRect boundingRect(m_EnclosingRect);	// Object to store bounding rectangle
   
   	// Increase the rectangle by the pen width and return it
   	int Offset = (m_PenWidth == 0) ? 1 : m_PenWidth;
   	// Width must be at least 1
   	boundingRect.InflateRect(Offset, Offset);
   	return boundingRect;
   }
   
   CLine::CLine(const CPoint& start, const CPoint& end, COLORREF aColor, int penWidth)
   {
   	m_StartPoint = start;
   	m_EndPoint = end;
   	m_Color = aColor;
   	m_PenWidth = penWidth;		// Set pen width  
   
   	// Define the enclosing rectangle
   	m_EnclosingRect = CRect(start, end);
   	m_EnclosingRect.NormalizeRect();
   }
   
   void CSketcherDoc::OnPenWidth()
   {
   	// Create a local dialog object
   	CPenDialog aDlg;
   
   	// Set the pen width in the dialog to that stored in the document
   	aDlg.m_PenWidth = m_PenWidth;
   
   	// Display the dialog as modal
   	if (aDlg.DoModal() == IDOK)
   		aDlg.DoModal();
   }