CMciControl类.doc

CMciControl类以下为MciControl.CPP的代码#include StdAfx.h#include MciControl.hCMciControl:CMciControl(void):mciLength(0)CMciControl:CMciControl(void)LPCTSTR CMciControl:ParseDeviceType(LPCTSTR fileName)CString name = fileName;/name.Format(_T(%s), fileName);/CString suffix;/CString deviceType;int pos = name.ReverseFind(.);fileName_ = name.Left(pos);suffix_ = name.Right(name.GetLength() - pos - 1);if (suffix_ = _T(wav)return _T(waveaudio);else if (suffix_ = _T(mid)return _T(sequencer);else if (suffix_ = _T(avi)return _T(avivideo);elsereturn _T(mpegvideo);MCIERROR CMciControl:Open(LPCTSTR fileName)if (mciOpen.wDeviceID)Close();LPCTSTR deviceType = ParseDeviceType(fileName);mciOpen.lpstrDeviceType = deviceType;mciOpen.lpstrAlias = _T(thisAlias);mciOpen.lpstrElementName = fileName;mciSendCommand(NULL, MCI_OPEN, MCI_OPEN_ELEMENT|MCI_OPEN_ALIAS|MCI_OPEN_TYPE, (DWORD)(LPVOID)&mciOpen);return TRUE;void CMciControl:Play(void)if (GetStatus(MCI_STATUS_MODE) = MCI_MODE_STOP)mciSendCommand(mciOpen.wDeviceID, MCI_SEEK, MCI_SEEK_TO_START, NULL);mciSet.dwTimeFormat = MCI_FORMAT_MSF;if (mciSendCommand(mciOpen.wDeviceID, MCI_SET, MCI_SET_TIME_FORMAT, (DWORD)&mciSet)/failuremciSendString(_T(play thisAlias), NULL, 0, NULL);mciLength = GetStatus(MCI_STATUS_LENGTH);MCIERROR CMciControl:PlayFrom(DWORD playFrom)mciSeek.dwTo = playFrom;mciSendCommand(mciOpen.wDeviceID, MCI_SEEK, MCI_TO | MCI_WAIT, (DWORD)&mciSeek);mciPlay.dwFrom = playFrom;mciSendCommand(mciOpen.wDeviceID, MCI_PLAY, MCI_FROM, (DWORD)&mciPlay);return TRUE;void CMciControl:Close()if (mciOpen.wDeviceID)mciSendCommand(mciOpen.wDeviceID, MCI_CLOSE, NULL, NULL);void CMciControl:Stop()if (mciOpen.wDeviceID)mciSendCommand(mciOpen.wDeviceID, MCI_STOP, NULL, NULL);mciSendCommand(mciOpen.wDeviceID, MCI_SEEK, MCI_SEEK_TO_START, NULL);void CMciControl:Pause()if (mciOpen.wDeviceID)mciSendCommand(mciOpen.wDeviceID, MCI_PAUSE, NULL, NULL);DWORD CMciControl:GetStatus(DWORD info)mciStatus.dwItem = info;mciStatus.dwReturn = 0;mciStatus.dwCallback = NULL;mciSendCommand(mciOpen.wDeviceID, MCI_STATUS, MCI_STATUS_ITEM, (DWORD)(LPVOID)&mciStatus);return mciStatus.dwReturn;以下为MciControl.h的代码：#pragma once#include #include #pragma comment(lib, Vfw32.lib)#pragma comment(lib, winmm.lib)class CMciControlpublic:CMciControl(void);public:CMciControl(void);DWORD mciLength;private:MCI_OPEN_PARMS mciOpen;MCI_STATUS_PARMS mciStatus;MCI_SET_PARMS mciSet;MCI_SEEK_PARMS mciSeek;MCI_PLAY_PARMS mciPlay;MCI_SAVE_PARMS mciSave;MCI_RECORD_PARMS mciRecord;public:LPCTSTR ParseDeviceType(LPCTSTR fileName);MCIERROR Open(LPCTSTR fileName);MCIERROR PlayFrom(DWORD playFrom);void Play(void);void Close(void)