DirextX编程

开发平台：

Visual C++

apShow.h：源码内容

							// apShow.h: CapShow 僋儔僗偺僀儞僞乕僼僃僀僗
//
//////////////////////////////////////////////////////////////////////
#if !defined(AFX_APSHOW_H__F85DAB28_1077_4F71_9CD4_C95229E2F852__INCLUDED_)
#define AFX_APSHOW_H__F85DAB28_1077_4F71_9CD4_C95229E2F852__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include "BlendText.h"	// Added by ClassView
#include <dshow.h>
#include <atlbase.h>
#define SAFE_RELEASE(x) { if (x) x->Release(); x = NULL; }
#define JIF(x) if (FAILED(hr=(x))) 
    {Msg(TEXT("FAILED(hr=0x%x) in ") TEXT(#x) TEXT("n"), hr); return hr;}
#define LIF(x) if (FAILED(hr=(x))) 
    {Msg(TEXT("FAILED(hr=0x%x) in ") TEXT(#x) TEXT("n"), hr);}
enum PLAYSTATE {Stopped, Paused, Running, Init};
class CapShow  
{
public:
	void UpdataStr(HWND ghApp,CString str);
	void SetFont(HWND hwnd);
	void OnPaint(HWND hwnd);
	CBlendText m_blender;
	CapShow();
	virtual ~CapShow();
	HRESULT InitializeWindowlessVMR(HWND ghApp);
	void ResizeVideoWindow(HWND ghApp);
	void CloseInterfaces();
	HRESULT CaptureVideo(HWND ghApp);
	HRESULT PlayWindow(HWND ghApp);
private:
	// DirectShow interfaces
	IMediaSeeking * g_pMS;
	PLAYSTATE g_psCurrent;
	IGraphBuilder * g_pGB;
	IVideoWindow  * g_pVW;
	IMediaControl * g_pMC;
	IMediaEventEx * g_pME;
	IGraphBuilder * g_pGraph;
	IVMRWindowlessControl * g_pWC;
	ICaptureGraphBuilder2 * g_pCapture;
	//font
	HFONT g_hFont;
	HRESULT FindCaptureDevice(IBaseFilter ** ppSrcFilter);
	HRESULT SetupVideoWindow(HWND ghApp);
	HRESULT GetInterfaces(HWND ghApp);
};
#endif // !defined(AFX_APSHOW_H__F85DAB28_1077_4F71_9CD4_C95229E2F852__INCLUDED_)

						