IltmmSupportManager* m_pSprtMngr;
HRESULT CConvertDlg::DVDUnlockSupport() { VARIANT_BOOL vb; HRESULT hr = CoCreateInstance(CLSID_ltmmSupportManager, NULL, CLSCTX_INPROC_SERVER, IID_IltmmSupportManager, (void**)&m_pSprtMngr); if (hr != S_OK) return -1; m_pSprtMngr->IsSupportLocked(L_SUPPORT_CONVERTFROMDVD, &vb); if (vb == VARIANT_TRUE) { static TCHAR L_KEY_CONVERTFROMDVD[] = "DVDKey"; USES_CONVERSION; hr = m_pSprtMngr->UnlockSupport(L_SUPPORT_CONVERTFROMDVD, T2OLE(L_KEY_CONVERTFROMDVD)); if (hr != S_OK) { m_pSprtMngr->Release(); return hr; } m_pSprtMngr->IsSupportLocked(L_SUPPORT_CONVERTFROMDVD, &vb); if (vb != VARIANT_FALSE) return E_FAIL; return S_OK; } return S_OK; }