C / C++ / MFC

typedef BOOL      (CALLBACK* IS40_SourceCloseFn)(const IS_CALLBACK_DATA uUserInfo);

extern "C"<br />
{<br />
  void register_callback(void (*callback) (void)); /* THIS FUNCTION GIVES YOU ACCESS TO A LIBRARY RUTINE SO I CAN'T MODIFY */<br />
}

class MyClass<br />
{<br />
  int m_counter;<br />
public:<br />
  MyClass() : m_counter(0) {}<br />
  void OnEvent() /* NOT STATIC OR CONST */<br />
  {<br />
    m_counter++;<br />
  }<br />
}

elmendavies wrote:

extern "C"
{
void register_callback(void (*callback) (void));
}

extern "C" 
{
  void register_callback(void (*callback)(int), int arg);
}
 
class MyClass
{
  int m_counter;
public:  MyClass() : m_counter(0) {}
  void OnEvent()
  {
    m_counter++;
  }
}
 
void MyClassOnEventThunk(int arg)
{
	MyClass *pInstance = reinterpret_cast<MyClass*>(arg);
	pInstance->OnEvent(pInstance);
}
 
// When registering the callback:
MyClass g_inst; // Somewhere.....
register_callback(&MyClassOnEventThunk, reinterpret_cast<int>(&g_inst)); // To register...

satw14 wrote:

Excepcion no controlada...

satw14 wrote:

m_wndSplitter=new CSplitterWnd();

satw14 wrote:

0xC0000005: Infraccion de acceso al leer la ubicacion Oxfeeefeee.

      int main()<br />
      {<br />
          char* str = new char[30];<br />
          float flt = 2.4567F;<br />
<br />
          sprintf(str, "%.4g", flt ); <br />
<br />
          cout<<str<<endl;<br />
          return 0;<br />
      }

VonHagNDaz wrote:

[Insert Witty Sig Here]

#include <strstream>
#include <iostream>

const double pi = 3.14; //Feel free to a digits at will
std::string piString;

int main(int argc, char * argv[])
{
  std::stringstream stream;
  stream << pi;
  //put any number of formatters here
  stream >> piString;

  std::cout << piString;

  return system("pause"); 
}

saravananmechanical wrote:

char TempBuffer[50];

ramana.g wrote:

Pls give some points, where it may go wrong?