Visual C++ and MFC Programming 2nd Edition

Chapter 9 Strings Visual C++ and MFC Fundamentals

The MM_HIMETRIC mapping mode uses the same axes orientation as the above three

modes. Its units are gotten by multiplying each of the given units by 0.01 millimeter.

Here is an example:

void CExoView::OnDraw(CDC* pDC)

{

CExoDoc* pDoc = GetDocument();

ASSERT_VALID(pDoc);

pDC->SetMapMode(MM_HIMETRIC);

pDC->SetViewportOrg(220, 150);

... No Change

pDC->SelectObject(pOld);

}

The MM_TWIPS map mode divides each logical unit by 20. Actually a twip is

equivalent to 1/1440 inch. Besides this unit conversion, the axes are oriented so the

horizontal axis moves from the origin (0, 0) to the right while the vertical axis moves

from the origin (0, 0) up. Here is an example:

void CExoView::OnDraw(CDC* pDC)

{

CExoDoc* pDoc = GetDocument();

ASSERT_VALID(pDoc);

pDC->SetMapMode(MM_TWIPS);

pDC->SetViewportOrg(220, 150);

... No Change

pDC->SelectObject(pOld);

}