C / C++ / MFC

Vaclav_Sal wrote:

I think I got the basics, but would like to know how compiler applies stuff like “dependencies” , settings – preprocessor “additional includes” and “Options – directories”.

Vaclav_Sal wrote:

It seems that one of the major obstacles in developing a real application is lack of understanding of   one of the fundamental language features – in this case C preprocessor.

Vaclav_Sal wrote:

I am sure this can be applied to any C derivative - C++, C# and other languages.

Vaclav_Sal wrote:

I think I got the basics, but would like to know how compiler applies stuff like “dependencies” , settings – preprocessor “additional includes” and “Options – directories”.

Vaclav_Sal wrote:

I am currently using it to stop   the compiler when there are too many initial error.

Vaclav_Sal wrote:

I am not confusing anything with C# since I don't use it.

Vaclav_Sal wrote:

And don't tell me not to use #error - it does what I want, so what if it is not
"cool".

Vaclav_Sal wrote:

lack of understanding of   one of the fundamental language features – in this case C preprocessor

Vaclav_Sal wrote:

I think I got the basics

const int MAX=256;

template <class T>
T max(const T& value1, const T& value3) {
   return (value1 < value2) ? value2 : value1; 
}

Vaclav_Sal wrote:

I think stating   that #include just adds the file text is rather simplistic.

yogeshs wrote:

Any IDeas ?

CWindowDC dc(NULL);  // screen DC--I won't actually draw on it
         CRect rcText(0,0,0,0);
         CFont* pOldFont = dc.SelectObject(GetMenuFont());
         dc.DrawText(pmd->text, rcText, DT_MYSTANDARD|DT_CALCRECT);
         CSize size = dc.GetTextExtent(pmd->text);
         dc.SelectObject(pOldFont);

         // height of item is just height of a standard menu item
         lpms->itemHeight= max(GetSystemMetrics(SM_CYMENU), rcText.Height()+1);

         // width is width of text plus a bunch of stuff
         int cx = rcText.Width();   // text width
         cx += CXTEXTMARGIN<<1;     // L/R margin for readability
         cx += CXGAP;               // space between button and menu text
         cx += m_szButton.cx<<1;    // button width (L=button; R=empty margin)

         // whatever value I return in lpms->itemWidth, Windows will add the
         // width of a menu checkmark, so I must subtract to defeat Windows. Argh.
         //
         cx -= GetSystemMetrics(SM_CXMENUCHECK)-1;
         lpms->itemWidth = cx;      // done deal

yogeshs wrote:

Now, Any Ideas.

class CStudentInfo
{
public:
enum EVal
{
 erollnumEVal,
 emark1EVal,
 emark2EVal
};

int GetValue( EVal eVal )
{
  int iRetVal = 0;

  switch( eVal )
  {
    case erollnumEVal:
      iRetVal = rollnum;
      break; 

    case emark1EVal:
      iRetVal = mark1;
      break; 

    case emark2EVal:
      iRetVal = mark2;
      break; 

    default:
      ASSERT( FALSE );
      break; 
  }

 return iRetVal;
}

private:
 int rollnum;
 int mark1;
 int mark2;
} 

class CStudentInfo
{
public:

int Getrollnum()
{
  return rollnum;
}

int Getmark1()
{
  return mark1;
}

int Getmark2()
{
  return mark2;
}

private:
 int rollnum;
 int mark1;
 int mark2;
}