C / C++ / MFC

void CChildFrame::ActivateFrame(int nCmdShow)
{
	// TODO: Modify this function to change how the frame is activated.

	<code>nCmdShow = SW_SHOWMAXIMIZED;</code>
	CMDIChildWnd::ActivateFrame(nCmdShow);
}

    // On WinXP switching maximized windows does a horrible flash as it does
    // a MDIRestore then Maximize. You see the Frame of the Restore MDI Windows
    // before they get painted over. The following code turns off Redraw
    // then Redraws again after we've Activated the new Window. 13 Nov 2001
    // See also: <A HREF=".\ChildFrm.cpp#^CChildFrame::ActivateFrame">
CWnd* pMDIClient = NULL;
BOOL bMaximized;
pMF->MDIGetActive( &bMaximized );   // pMDIChild->IsZoomed() doesn't work here.
if ( bMaximized )
{       // Only needed if we are maximized.
    pMDIClient = pMDIChild->GetParent();
    // pMDIClient = pMF->GetMDIClient();   // rem: Same as pMDIChild->GetParent()
    pMDIClient->SetRedraw( FALSE );
}

pMF->MDIActivate( pMDIChild );  // This isn't strictly needed for NM_CLICK but doesn't seem to hurt.

         // Minimized windows can be hidden behind something (Output Window)
         // so Restore to normal size. This can happen when ED is started and their are minimzed windows.
    if ( bRestoreMinimized and pMDIChild->IsIconic() )    // added bRestoreMinimized. See CMDIClient::OnMDINext(). 27 Sep 2001
        pMDIChild->MDIRestore();

if ( bMaximized )
{       // Ok time to redraw all MDI Windows.
    pMDIClient->SetRedraw( TRUE );
    pMDIClient->RedrawWindow( NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ERASE | RDW_ALLCHILDREN  );
}

<br />
if(m_pScanThread && m_pScanThread->m_hThread != NULL)<br />
{<br />
    m_pScanThread->PostThreadMessage(UWM_TIMERON,0,0);<br />
}<br />
else<br />
{<br />
    m_pScanThread = AfxBeginThread((AFX_THREADPROC)fnScanProc,NULL);<br />
    if(m_pScanThread && m_pScanThread->m_hThread != NULL)<br />
	m_pScanThread->PostThreadMessage(UWM_TIMERON,0,0);<br />
}<br />

<br />
CoInitializeEx(NULL,COINIT_MULTITHREADED );<br />
try<br />
{<br />
//Do some Initialize<br />
DWORD dwRet;<br />
MSG msg;<br />
while(dwRet = GetMessage(&msg,NULL,0,0) != 0)<br />
{<br />
    if(dwRet == -1)<br />
    {<br />
        continue;<br />
    }<br />
    else<br />
    {<br />
	if(msg.message == UWM_TIMERON)<br />
             Scan(...);<br />
	else<br />
	     DispatchMessage(&msg);<br />
     }<br />
  }<br />
}<br />
catch(...)<br />
{<br />
   return -1;///Here! if return then the m_pScanThread's( member of the main<br />
             ///thread)member m_hThread is 0xfeeefeee<br />
             ///and at this time i want to re - AfxBeginThread... <br />
   ::CoUninitialize();<br />
}<br />
::CoUninitialize();<br />
return 0;

m_pScanThread = AfxBeginThread((AFX_THREADPROC)fnScanProc,NULL);
if(m_pScanThread && m_pScanThread->m_hThread != NULL)
    m_pScanThread->PostThreadMessage(UWM_TIMERON,0,0);

TypeA myType;
myType = WIN;

XYZ<MyClass, myType> zyx;

// A.h
class A
{
  typedef A* (creator *)();
  typedef map<int,creator> creators_map;
  static creators_map m;
protected:
  static void register(int n,creator c)
  {
    m[n]=c;
  }
public:
  A* create(int n)
  {
    creators_map::iterator it=m.find(n);
    if(it==m.end())return 0;
    return it->second();
  }
  //virtual member functions go here
};
// A1.h
class A1: public A
{
  static A* create(){return new A1;}
public:
  static void register() //this has to be explicity called somewhere
  {
    A::register(1,create);
  }
  ...
};