C / C++ / MFC

HANDLE hSemaphore = NULL;
LPCTSTR pGlobalName = _T("Global\\MyInstance_938759");

hSemaphore = OpenSemaphore(SEMAPHORE_ALL_ACCESS, FALSE, pGlobalName);
if (!hSemaphore) {
  // it doesn't exists, so create it, to inform another instances
  hSemaphore = CreateSemaphore(NULL, 0, 2, pGlobalName);
} else {
  // another instance already exists; quit!
  return 0;
}

abrakadbra wrote:

i have dll file and header for dll but i ont hev .lib file for that how to get that .can anybody help me out

norm wrote:

No you don't actually put in the buttons yourself... It's created for you by default

CWnd *pWnd = GetDlgItem(ID_HELP);
pWnd->EnableWindow(FALSE);
pWnd->MoveWindow(-100, -100, 0, 0, FALSE);
pWnd->ModifyStyle(WS_TABSTOP, 0);

<br />
BOOL ClsXXXSettingsSheet::OnInitDialog() <br />
{<br />
	BOOL rc = CPropertySheet::OnInitDialog();<br />
	<br />
	...<br />
<br />
	CWnd * pbtnHelp = GetDlgItem(ID_HELP);<br />
<br />
	pbtnHelp->ShowWindow(FALSE); <-- Crashed here<br />
<br />
	...<br />
<br />
	return rc;<br />
}<br />
<br />
<br />
<br />
BOOL CWnd::ShowWindow(int nCmdShow)<br />
{<br />
	ASSERT(::IsWindow(m_hWnd));  <-- Crashed here<br />
<br />
	if (m_pCtrlSite == NULL)<br />
		return ::ShowWindow(m_hWnd, nCmdShow);<br />
	else<br />
		return m_pCtrlSite->ShowWindow(nCmdShow);<br />
}