STDAPI DllCanUnloadNow()
{
if (GetCurrentThreadId() != qAxThreadId)
return S_FALSE;
if (qAxLockCount())
return S_FALSE;
if (!qax_ownQApp)
return S_OK;
// check if qApp still runs widgets (in other DLLs)
QWidgetList widgets = qApp->allWidgets();
int count = widgets.count();
for (int w = 0; w < widgets.count(); ++w) {
// remove all Qt generated widgets
QWidget *widget = widgets.at(w);
if (widget->windowType() == Qt::Desktop || widget->objectName() == QLatin1String("Qt internal tablet widget"))
count--;
}
if (count)
return S_FALSE;
// no widgets left - destroy qApp
if (qax_hhook)
UnhookWindowsHookEx(qax_hhook);
delete qApp;
qax_ownQApp = false;
// never allow unloading - safety net for Internet Explorer
return S_FALSE;
}
// Monitors the shutdown event
static DWORD WINAPI MonitorProc(void* pv)
{
while (1) {
WaitForSingleObject(hEventShutdown, INFINITE);
DWORD dwWait=0;
do {
qAxActivity = false;
dwWait = WaitForSingleObject(hEventShutdown, dwTimeOut);
} while (dwWait == WAIT_OBJECT_0);
// timed out
if (!qAxActivity && !qAxLockCount()) // if no activity let's really bail
break;
}
CloseHandle(hEventShutdown);
PostThreadMessage(dwThreadID, WM_QUIT, 0, 0);
PostQuitMessage(0);
return 0;
}
