C / C++ / MFC

komalwaseem wrote:

...how can I open a new dialog box on clicking a button...

wchar_t szHandle[] = L"123456";
LPCWSTR p = szHandle;
HWND h = (HWND)(HANDLE)(DWORD)_wtol(p);

<br />
CString s;<br />
s.Format("%Xh", hwnd);<br />

kk_mfc wrote:

Is there any book or any site which gives some case studies on class designing?

class contr_salary_calc
{
public:

 int operator()( employee& E )
 {
   //do contractor salary calc for E
 }

};

class perm_salary_calc
{
public:

 int operator()( employee& E )
 {
   //do perm salary calc for E
 }

};

class employee
{

public:

 employee()
 {
  m_bPermanent = false;//assuming default to contractor over permanent
 }

 void calculate()
 {
   if( m_bPermanent )
   {
    m_PermCalc()(*this);
   }
   else
   {
    m_ContrCalc()(*this);
   }
 }

 void MakePermanent()
 {
   m_bPermanent = true;
 }

private:

 bool m_bPermanent
 contr_salary_calc m_ContrCalc;
 perm_salary_calc m_PermCalc;

};