WindowsXP-SP1/shell/lib/shco.c

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2001-01-01 00:00:00 +01:00
#include "stock.h"
#pragma hdrstop
// Need to put into separate file because for some reason the /Gy compiler
// option doesn't work.
//
// COM Initialization is weird due to multithreaded apartments.
//
// If this thread has not called CoInitialize yet, but some other thread
// in the process has called CoInitialize with the COINIT_MULTITHREADED,
// then that infects our thread with the multithreaded virus, and a
// COINIT_APARTMENTTHREADED will fail.
//
// In this case, we must turn around and re-init ourselves as
// COINIT_MULTITHREADED to increment the COM refcount on our thread.
// If we didn't do that, and that other thread decided to do a
// CoUninitialize, that >secretly< uninitializes COM on our own thread
// and we fall over and die.
//
STDAPI SHCoInitialize(void)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
if (FAILED(hr))
{
hr = CoInitializeEx(NULL, COINIT_MULTITHREADED | COINIT_DISABLE_OLE1DDE);
}
return hr;
}