HRESULT DVDUnlockSupport()
{
VARIANT_BOOL vb;
IltmmSupportManager* pSupportMgr;
// try to create the support manager interface
HRESULT hr = CoCreateInstance(CLSID_ltmmSupportManager, NULL, CLSCTX_INPROC_SERVER, IID_IltmmSupportManager, (void**)&pSupportMgr);
if (hr != S_OK)
return -1;
// check if support is locked
pSupportMgr->IsSupportLocked(L_SUPPORT_CONVERTFROMDVD, &vb);
if (vb == VARIANT_TRUE)
{
// use your unlock key here
static TCHAR L_KEY_CONVERTFROMDVD[] = L"DVDKey";
USES_CONVERSION;
// try to unlock support
hr = pSupportMgr->UnlockSupport(L_SUPPORT_CONVERTFROMDVD, T2OLE(L_KEY_CONVERTFROMDVD));
if (hr != S_OK)
{
// release the support manager object
pSupportMgr->Release();
return hr;
}
// check again to see if it is unlocked now
pSupportMgr->IsSupportLocked(L_SUPPORT_CONVERTFROMDVD, &vb);
if (vb != VARIANT_FALSE)
{
// release the support manager object
pSupportMgr->Release();
return E_FAIL;
}
}
// release the support manager object
pSupportMgr->Release();
return S_OK;
}
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Medical Web Viewer .NET
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