MCI播放器在VB中实现(2)

Select Case UCase(Right(ff, 3))
Case "MID", "RMI", "IDI"
GetDriverID = "Sequencer"
Case "WAV"
GetDriverID = "Waveaudio"
Case "ASF", "ASX", "IVF", "LSF", "LSX", "P2V", "WAX", "WVX", ".WM", "WMA", "WMX", "WMP"
GetDriverID = "MPEGVideo2"
Case ".RM", "RAM", ".RA"
GetDriverID = "RealPlayer"
Case Else
GetDriverID = "MPEGVideo"
End Select
End Function

''''======================================================
''''播放文件
''''======================================================
Public Function PlayMusic() As Boolean
Dim RefInt As Long
PlayMusic = False
RefInt = mciSendString("play NOWMUSIC", vbNull, 0, 0)
If RefInt = 0 Then PlayMusic = True
End Function

''''======================================================
''''获取媒体的长度
''''======================================================
Public Function GetMusicLength() As Long
Dim RefStr As String * 80
mciSendString "status NOWMUSIC length", RefStr, 80, 0
GetMusicLength = Val(RefStr)
End Function

''''======================================================
''''获取当前播放进度
''''======================================================
Public Function GetMusicPos() As Long
Dim RefStr As String * 80
mciSendString "status NOWMUSIC position", RefStr, 80, 0
GetMusicPos = Val(RefStr)
End Function

''''======================================================
''''获取媒体的当前进度
''''======================================================
Public Function SetMusicPos(Position As Long) As Boolean
Dim RefInt As Long
SetMusicPos = False
RefInt = mciSendString("seek NOWMUSIC to " & Position, vbNull, 0, 0)
If RefInt = 0 Then SetMusicPos = True
End Function

''''======================================================
''''暂停播放
''''======================================================
Public Function PauseMusic() As Boolean
Dim RefInt As Long
PauseMusic = False
RefInt = mciSendString("pause NOWMUSIC", vbNull, 0, 0)
If RefInt = 0 Then PauseMusic = True
End Function
''''======================================================
''''关闭媒体
''''======================================================
Public Function CloseMusic() As Boolean
Dim RefInt As Long
CloseMusic = False
RefInt = mciSendString("close NOWMUSIC", vbNull, 0, 0)
If RefInt = 0 Then CloseMusic = True
End Function
''''======================================================
''''设置声道
''''======================================================
Public Function SetAudioSource(sAudioSource As AudioSource) As Boolean
Dim RefInt As Long
Dim strSource As String
Select Case sAudioSource
Case 1: strSource = "left"
Case 2: strSource = "right"
Case 0: strSource = "stereo"
End Select
SetAudioSource = False
RefInt = mciSendString("setaudio NOWMUSIC source to " & strSource, vbNull, 0, 0)
If RefInt = 0 Then SetAudioSource = True
End Function

''''======================================================
''''全屏播放
''''======================================================
Public Function PlayFullScreen() As Boolean
Dim RefInt As Long
PlayFullScreen = False
RefInt = mciSendString("play NOWMUSIC fullscreen", vbNull, 0, 0)
If RefInt = 0 Then PlayFullScreen = True
End Function

''''=====================================================
''''设置声音大小
''''=====================================================
Public Function SetVolume(Volume As Long) As Boolean
Dim RefInt As Long
SetVolume = False
RefInt = mciSendString("setaudio NOWMUSIC volume to " & Volume, vbNull, 0, 0)
If RefInt = 0 Then SetVolume = True
End Function

''''=====================================================
''''设置播放速度
''''=====================================================
Public Function SetSpeed(Speed As Long) As Boolean
Dim RefInt As Long
SetSpeed = False
RefInt = mciSendString("set NOWMUSIC speed " & Speed, vbNull, 0, 0)
If RefInt = 0 Then SetSpeed = True
End Function

''''====================================================
''''静音True为静音，FALSE为取消静音
''''====================================================
Public Function SetAudioOnOff(AudioOff As Boolean) As Boolean
Dim RefInt As Long
Dim OnOff As String
SetAudioOff = False
If AudioOff Then OnOff = "off" Else OnOff = "on"
RefInt = mciSendString("setaudio NOWMUSIC " & OnOff, vbNull, 0, 0)
If RefInt = 0 Then SetAudioOff = True
End Function

''''====================================================
''''是否有画面True为有，FALSE为取消
''''====================================================
Public Function SetWindowShow(WindowOff As Boolean) As Boolean

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