线程互斥
浏览数：23 /
时间：2015年06月08日
////////////////////////////////////////////////////////////////
HINSTANCE hInsta=::LoadLibrary("language\\XSelf.dll");
if(hInsta!=NULL) AfxSetResourceHandle(hInsta);
/////////////////////////////////////////////////////////////////////////
char pszExeName[32]="OnXDC XSelf";
::CreateMutex(NULL, TRUE, m_pszExeName);
if (GetLastError()==ERROR_ALREADY_EXISTS)
{
//Find our previous application‘s main window
CWnd *pPrevWnd=CWnd::GetDesktopWindow()->GetWindow(GW_CHILD);
while (pPrevWnd)
{
//Does this window have the previous instance tag set?
if (::GetProp(pPrevWnd->GetSafeHwnd(), m_pszExeName))
{
//found window,now set focus to the window
//first restore window if it is currently iconic
if (pPrevWnd->IsIconic())
pPrevWnd->ShowWindow(SW_RESTORE);
//set focus to main window
pPrevWnd->SetForegroundWindow();
//if window has a pop-up window, set focus to pop-up
pPrevWnd->GetLastActivePopup()->SetForegroundWindow();
return FALSE;
}
//Did not find window,get next window in list
pPrevWnd = pPrevWnd->GetWindow(GW_HWNDNEXT);
}
return FALSE;
}
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