rxmci.cpp

用VC写的小型企业系统管理系统,有优良的界面和较强的实用价值

// RxMCI.cpp: implementation of the RxMCI class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "htglxt.h"
#include "RxMCI.h"
#include "mmsystem.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

RxMCI::RxMCI()
{
	m_IsOpen=false;
	m_IsPlay=true;
}

RxMCI::~RxMCI()
{
	if(m_nElementID)
		mciSendCommand(m_nElementID,MCI_CLOSE,NULL,NULL);
	if(m_nDeviceID)
		mciSendCommand(m_nDeviceID,MCI_CLOSE,NULL,NULL);
}

void RxMCI::Open(char* lpstrDeviceType)
{
	if(m_IsOpen==true)
		return;
	m_IsOpen==true;
	MCI_OPEN_PARMS mciOpenParms;
	mciOpenParms.lpstrDeviceType=lpstrDeviceType;
	m_lpDeviceType=lpstrDeviceType;
	DWORD dParms;
	dParms=mciSendCommand(NULL,MCI_OPEN,MCI_OPEN_TYPE|MCI_OPEN_TYPE_ID|MCI_WAIT,(DWORD)(LPVOID)&mciOpenParms);
	if(dParms)
		DisplayErrorMsg(dParms);
	m_nDeviceID=mciOpenParms.wDeviceID;
}

void RxMCI::DisplayErrorMsg(DWORD dParam)
{
	char cMsg[MAXERRORLENGTH];
	if(!mciGetErrorString(dParam,cMsg,sizeof(cMsg)))
		strcpy(cMsg,"未知错误！");
	//::MessageBox(NULL,cMsg,"系统提示",MB_OK|MB_ICONSTOP);
}

void RxMCI::Play(char* lpFileName,CWnd* pWnd)
{
	DWORD dParms;
	MCI_OPEN_PARMS mciOpenParms;
	memset(&mciOpenParms,0,sizeof(MCI_OPEN_PARMS));
	mciOpenParms.lpstrElementName=lpFileName;
	dParms=mciSendCommand(m_nDeviceID,MCI_OPEN,MCI_OPEN_ELEMENT,(DWORD)(LPVOID)&mciOpenParms);
	if(dParms)
	{
		DisplayErrorMsg(dParms);
		return;
	}
	m_nElementID=mciOpenParms.wDeviceID;
	MCI_PLAY_PARMS mciPlayParms;
	mciPlayParms.dwCallback=(DWORD)pWnd->GetSafeHwnd();
	if(m_lpDeviceType==(LPSTR)MCI_DEVTYPE_SEQUENCER)
		dParms=mciSendCommand(m_nElementID,MCI_PLAY,MCI_NOTIFY,(DWORD)(LPVOID)&mciPlayParms);
	else
		dParms=mciSendCommand(m_nDeviceID,MCI_PLAY,MCI_NOTIFY,(DWORD)(LPVOID)&mciPlayParms);
	if(dParms)
		DisplayErrorMsg(dParms);
	m_IsPlay=true;
}
void RxMCI::Close()
{
	DWORD dParms;
	if(m_nDeviceID)
		dParms=mciSendCommand(m_nDeviceID,MCI_CLOSE,NULL,NULL);
	if(dParms)
		DisplayErrorMsg(dParms);
}

void RxMCI::Stop()
{
	DWORD dParms;
	if(m_nElementID)
		dParms=mciSendCommand(m_nElementID,MCI_CLOSE,NULL,NULL);
	if(dParms)
		DisplayErrorMsg(dParms);
}


bool RxMCI::IsPlay()
{
	return m_IsPlay;
}