C / C++ / MFC

Windows has triggered a breakpoint in myprog.exe.

This may be due to a corruption of the heap, which indicates a bug in myprog.exe or any of the DLLs it has loaded.

// create Thread:
CWinThread* cmythr= AfxBeginThread(controlfunc,params, THREAD_PRIORITY_HIGHEST, 0,CREATE_SUSPENDED,0);
if(NULL != cmythr)
{
	cmythr->ResumeThread();
}

// first -- check for simple worker thread
DWORD nResult = 0;
if (pThread->m_pfnThreadProc != NULL)
{
	nResult = (*pThread->m_pfnThreadProc)(pThread->m_pThreadParams);
	ASSERT_VALID(pThread);
}

void CPNGButton::OnLButtonDown(UINT nFlags, CPoint point)
{
	SetCapture();
	SetPNG2Button(m_strMouseDownImagePath);
	CStatic::OnLButtonDown(nFlags, point);
}

void CPNGButton::OnLButtonUp(UINT nFlags, CPoint point)
{
	SetPNG2Button(m_strMouseMoveImagePath);
	CStatic::OnLButtonUp(nFlags, point);
}

void CPNGButton::OnMouseMove(UINT nFlags, CPoint point)
{
	SetCapture();
	CRect rc;
	GetClientRect(rc);
	if (rc.PtInRect(point))
	{
		if (!m_isPointInWnd)
		{
			OnMouseEnter();
			m_isPointInWnd = TRUE;
		}
	}
	else
	{
		SetPNG2Button(m_strMouseAwayImagePath);
		ReleaseCapture();
		m_isPointInWnd = FALSE;
	}
	CStatic::OnMouseMove(nFlags, point);
}

void CPNGButton::OnMouseEnter()
{
	SetPNG2Button(m_strMouseMoveImagePath);
}

BOOL CMainFrame::Login()
{
	this->ShowWindow(SW_MINIMIZE);

   	CLoginForm  loginForm();
   	if (loginForm.DoModal() != IDOK)  
 	{
 		this->PostMessage(WM_CLOSE);
 		return FALSE;
 	}
	...

	this->ShowWindow(SW_SHOWNORMAL);
	return TRUE;
}

void CLoginForm::OnClickedMinimize()
{
	ShowWindow(SW_MINIMIZE);
}

char name[15];