C++ IVideoWindow::HideCursor方法代码示例

void Video::play( char *fileName, DWORD )
{
	WCHAR wPath[100];
	HRESULT hr;
	IMediaControl *pMC;

	if(!init_success)
		return;

	MultiByteToWideChar( CP_ACP, 0, fileName, -1, wPath, 100 );

	if( (hr = pGraph->RenderFile(wPath, NULL)) == 0)
	{

		// use full screen video interface
		// try to change display mode
		IVideoWindow *iVideoWindow = NULL;
		if( (hr = pGraph->QueryInterface(IID_IVideoWindow, (void **) &iVideoWindow)) == 0)
		{
#ifdef CREATE_DUMMY_WINDOW
			if(hwnd)
			{
				HRESULT hr2 = iVideoWindow->put_MessageDrain((OAHWND) hwnd);
				hr2 = 0;
			}
#endif

#ifdef FULL_SCREEN_VIDEO
			IFilter *iFilter;
			if( pGraph->FindFilterByName(L"Video Renderer", &iFilter) == 0)
			{
				IBasicVideo *iBasicVideo;
				if( iFilter->QueryInterface(IID_IBasicVideo, (void **)&iBasicVideo) == 0)
				{
					IFullScreenVideo *iFullScreenVideo;
					IDirectDrawVideo *iDirectDrawVideo;
					if( iFilter->QueryInterface(IID_IFullScreenVideo, (void **)&iFullScreenVideo) == 0)
					{
						iFullScreenVideo->Release();
					}
					else if( iFilter->QueryInterface(IID_IDirectDrawVideo, (void **)&iDirectDrawVideo) == 0)
					{
						HRESULT hr2;
						hr2 = iDirectDrawVideo->UseWhenFullScreen(OATRUE);
						iDirectDrawVideo->Release();
					}

					iBasicVideo->Release();
				}
				iFilter->Release();
			}
			hr=iVideoWindow->put_FullScreenMode(OATRUE);
#endif

			/* // code to find all filter in the filter graph
			{
				IEnumFilters *iEnumFilters;
				pGraph->EnumFilters(&iEnumFilters);

				ULONG filterCount = 16;
				IFilter *iFilters[16];
				iEnumFilters->Next(filterCount, iFilters, &filterCount);

				for( ULONG j = 0; j < filterCount; ++j )
				{
					FILTER_INFO filterInfo;
					iFilters[j]->QueryFilterInfo(&filterInfo);
					filterInfo.pGraph->Release();
					iFilters[j]->Release();
				}

				iEnumFilters->Release();
			}*/

			iVideoWindow->HideCursor(OATRUE);
			iVideoWindow->put_Visible( OAFALSE );
			iVideoWindow->put_AutoShow( OAFALSE );
			LONG windowStyle;
			iVideoWindow->get_WindowStyle( &windowStyle);
			windowStyle &= ~WS_BORDER & ~WS_CAPTION & ~WS_SIZEBOX & ~WS_THICKFRAME &
				~WS_HSCROLL & ~WS_VSCROLL & ~WS_VISIBLE;
			iVideoWindow->put_WindowStyle( windowStyle);
		}
		else
			iVideoWindow = NULL;
		
		if( (hr = pGraph->QueryInterface(IID_IMediaControl, (void **) &pMC)) == 0)
		{
			pMC->Run();					// sometimes it returns 1, but still ok
			state = PLAYING;
			pMC->Release();
		}

		if( iVideoWindow )
		{
			iVideoWindow->put_Visible( OAFALSE );
			LONG windowStyle;
			iVideoWindow->get_WindowStyle( &windowStyle);
			windowStyle &= ~WS_BORDER & ~WS_CAPTION & ~WS_SIZEBOX & ~WS_THICKFRAME &
				~WS_HSCROLL & ~WS_VSCROLL & ~WS_VISIBLE;
//.........这里部分代码省略.........

	virtual HRESULT SetVideoPosition(RECT *pSrc, RECT *pDst, BOOL hideMouse)
	{
		if (!m_pGraph) return E_FAIL;
		if (m_pVmrAllocator && pSrc && pDst)
		{
			// Update our VMR9 window positioning for mouse events to work (this may only
			// work on XP, I think it will still fail on 2K)
			m_pVmrAllocator->UpdateVideoPosition(pSrc, pDst);
			return S_OK;
		}

		IBasicVideo* pBV = NULL;
		HRESULT hr = m_pGraph->QueryInterface(IID_IBasicVideo, (void**)&pBV);
		if (SUCCEEDED(hr))
		{
	/*		long nativeWidth;
			hr = pBV->get_VideoWidth(&nativeWidth);
			if (FAILED(hr))
			{
				SAFE_RELEASE(pBV);
				// no video is present
				return;
			}
	*/
			long srcTop, srcLeft, srcWidth, srcHeight;
			pBV->GetSourcePosition(&srcLeft, &srcTop, &srcWidth, &srcHeight);
			pBV->GetDestinationPosition(&srcLeft, &srcTop, &srcWidth, &srcHeight);
			if (pSrc)
			{
				pBV->SetSourcePosition(pSrc->left, pSrc->top, pSrc->right - pSrc->left, pSrc->bottom - pSrc->top);
			}
			else
			{
				pBV->SetDefaultSourcePosition();
			}
			if (pDst)
			{
				pBV->SetDestinationPosition(pDst->left, pDst->top, pDst->right - pDst->left, pDst->bottom - pDst->top);
			}
			else
			{
				pBV->SetDefaultDestinationPosition();
			}
			SAFE_RELEASE(pBV);

			IVideoWindow* pVW = NULL;
			hr = m_pGraph->QueryInterface(IID_IVideoWindow, (void**)&pVW);
			if (SUCCEEDED(hr))
			{
				OAHWND vidWinHWND;
				hr = pVW->get_Owner(&vidWinHWND);
				if (SUCCEEDED(hr))
				{
					RECT grc;
					GetClientRect((HWND)vidWinHWND, &grc);
					pVW->SetWindowPosition(0, 0, grc.right, grc.bottom);
				}
				pVW->HideCursor(hideMouse == JNI_TRUE ? OATRUE : OAFALSE);
				SAFE_RELEASE(pVW);
			}
		}
		return S_OK;
	}