用API函数Mcisendstring直接播放背景音乐

源代码：
Private Sub Command1_Click()
Dim back
back = mciSendString&("CLOSE NN", 0, 0, 0)
End Sub

Private Sub Command2_Click()
Dim back
back = mciSendString&("OPEN " + App.Path + "\TEST.mid" + " TYPE SEQUENCER ALIAS NN", 0&, 0, 0)
back = mciSendString&("PLAY NN FROM 0", 0&, 0, 0)
R% = mciSendString&("CLOSE ANIMATION", 0&, 0, 0)
End Sub

Private Sub Form_Load()
Dim back
back = mciSendString&("OPEN " + App.Path + "\TEST.mid" + " TYPE WaveAudio ALIAS NN", 0&, 0, 0)
back = mciSendString&("PLAY NN FROM 0", 0&, 0, 0)
R% = mciSendString&("CLOSE ANIMATION", 0&, 0, 0)
End Sub