C / C++ / MFC

int foo(int number); 
int foo(int number1, int number = 0);

DWORD dwProcessID = 0;
::GetWindowThreadProcessId(hWnd, &dwProcessID);
HANDLE hProcess = ::OpenProcess(PROCESS_QUERY_INFORMATION,
                                FALSE,
                                dwProcessID);
if(NULL != hProcess)
{
   // enjoy of hProcess;
   // ...
   ::CloseHandle(hProcess);
}
else
{
   // ... oups, error!
   DWORD dwError = ::GetLastError();
   // ...
}

• First
  Check if m_bitmap has already a bitmap attached:
  

  if(NULL == m_bitmap.GetSafeHandle())
  {
     m_bitmap.LoadBitmap (IDB_MJ_SOFTWARE);
  }

  
  
• Second
  DO NOT delete a GDI object which is currently selected in a device context.
  Set it free by a call of dc.SelectObject(oldbrush) BEFORE calling mybrush.DeleteObject().
  

if (m_bitmap.m_hObject==NULL) <br />
m_bitmap.LoadBitmap ( IDB_MJ_SOFTWARE ) ;

<br />
TCHAR GetDriveLetter(LPCTSTR lpDevicePath)<br />
{<br />
    TCHAR d = _T('A');<br />
    while(d < = _T('Z'))<br />
    {<br />
        TCHAR szDeviceName[3] = {d,_T(':'),_T('\0')};<br />
        TCHAR szTarget[512] = {0};<br />
        if(QueryDosDevice(szDeviceName, szTarget, 511) != 0)<br />
            if(_tcscmp(lpDevicePath, szTarget) == 0)<br />
                return d;<br />
        d++;<br />
    }<br />
    return NULL;<br />
}<br />