www.pudn.com > ATLMovie.rar > MovieCtl.cpp

// MovieCtl.cpp : Implementation of CMovieCtl 
// 
// This is a part of the Active Template Library. 
// Copyright (c) Microsoft Corporation.  All rights reserved. 
// 
// This source code is only intended as a supplement to the 
// Active Template Library Reference and related 
// electronic documentation provided with the library. 
// See these sources for detailed information regarding the 
// Active Template Library product. 
 
#include "stdafx.h" 
#include "ATLMovie.h" 
#include "MovieCtl.h" 
 
#pragma warning ( disable : 4311 ) 
 
///////////////////////////////////////////////////////////////////////////// 
// CMovieCtl 
 
HRESULT CMovieCtl::OnDraw(ATL_DRAWINFO& di) 
{ 
	// If we can get the ambient background color from the container then we 
	// will use it to fill our background 
	CComVariant var; 
	if (SUCCEEDED(m_spAmbientDispatch.GetProperty(DISPID_AMBIENT_BACKCOLOR, &var))) 
	{ 
		LOGBRUSH    logbrush; 
		COLORREF    col; 
		logbrush.lbStyle = BS_SOLID; 
		OleTranslateColor(var.lVal, NULL, &col); 
		logbrush.lbColor = col; 
		HBRUSH hBrush = CreateBrushIndirect(&logbrush); 
		FillRect(di.hdcDraw, (RECT*)di.prcBounds, hBrush); 
		DeleteObject(hBrush); 
	} 
	return S_OK; 
} 
 
STDMETHODIMP CMovieCtl::put_FileName(BSTR newVal) 
{ 
	// Initialize Active Movie with the new filename 
	CreateFilterGraph(newVal); 
 
	SysFreeString(newVal); 
	return S_OK; //hr; 
} 
 
// Initialize Active Movie with the passed movie filename 
HRESULT CMovieCtl::CreateFilterGraph(LPCOLESTR strFile) 
{ 
	HRESULT hr; 
 
	// If we are resetting the filename we need to close the existing one, 
	// otherwise we'll get another window created. 
	if (m_spVideoWindow) 
	{ 
		m_spVideoWindow->Visible = FALSE;   // Hide the video window 
		m_spVideoWindow->Owner = NULL; 
		m_spMediaControl.Release(); 
		m_spVideoWindow.Release(); 
	} 
	// Create the Active Movie object 
	hr = m_spVideoWindow.CreateInstance(__uuidof(FilgraphManager)); 
	m_spMediaControl = m_spVideoWindow; 
 
	// Open the passed file 
	hr = m_spMediaControl->RenderFile(strFile); 
 
	// Now initialize the video window 
	HWND hWnd; 
	RECT rc = m_rcPos; 
	if (m_bWndLess) 
	{ 
		// Obtain the HWND of the client's window 
		HDC hDC; 
		m_spInPlaceSite->GetDC(NULL, OLEDC_NODRAW, &hDC); 
		hWnd = WindowFromDC(hDC); 
	} 
	else 
	{ 
		hWnd = m_hWnd; 
		OffsetRect(&rc, -rc.left, -rc.top); 
	} 
	m_spVideoWindow->Owner = (long)hWnd; 
	m_spVideoWindow->WindowStyle = WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS; 
	m_spVideoWindow->SetWindowPosition(rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top); 
 
	return hr; 
} 
 
// Play the movie 
STDMETHODIMP CMovieCtl::Play() 
{ 
	HRESULT hr; 
 
	if (m_spVideoWindow == NULL) 
		return E_FAIL; 
 
	// Find out if we've reached the end of the movie and if we have 
	// rewind to the beginning 
	IMediaPositionPtr spMP = m_spVideoWindow; 
	if (spMP) 
	{ 
		if (spMP->CurrentPosition >= spMP->Duration) 
			spMP->CurrentPosition = 0; 
	} 
 
	// Start the movie 
	if (m_spMediaControl) 
		hr = m_spMediaControl->Run(); 
	else 
		hr = E_FAIL; 
 
	return hr; 
} 
 
// Pause the movie 
STDMETHODIMP CMovieCtl::Pause() 
{ 
	if (m_spMediaControl) 
		m_spMediaControl->Pause(); 
 
	return S_OK; 
} 
 
// Rewind the movie to the beginning 
STDMETHODIMP CMovieCtl::Reset() 
{ 
	if (m_spVideoWindow) 
	{ 
		IMediaPositionPtr spMP = m_spVideoWindow; 
		if (spMP) 
			spMP->CurrentPosition = 0; 
	} 
	return S_OK; 
} 
 
// Stop the movie 
STDMETHODIMP CMovieCtl::Stop() 
{ 
	if (m_spMediaControl) 
	{ 
		m_spMediaControl->Stop(); 
		Reset();                            // Go back to the beginning 
		m_spVideoWindow->Visible = FALSE;   // Hide the video window 
	} 
	return S_OK; 
} 
 
// Override function so the COM support doesnt throw exeptions 
void __stdcall _com_raise_error(HRESULT /*hr*/, IErrorInfo* /*perrinfo*/) //throw(_com_error) 
{ 
}