窗体资源释放问题 我在一个非系统启动窗体上用以下代码播放一段背景音乐，为什么我关闭该窗体后，背景音乐还不消失？请问怎么把音乐也去掉。 Private Sub frmHomePage_Load(ByVal sender As Object,ByVal e As System.EventArgs) Handles MyBase.Load Dim SoundInst As New SoundClass SoundInst.PlaySoundFile( c:/平湖秋月.wav ) SoundInst.PlaySoundFile( ) End Sub Public Class SoundClass Declare Auto Function PlaySound Lib winmm.dll (ByVal name _ As String,ByVal hmod As Integer,ByVal flags As Integer) As Integer name specifies the sound file when the SND_FILENAME flag is set. hmod specifies an executable file handle. hmod must be Nothing if the SND_RESOURCE flag is not set. flags specifies which flags are set. The PlaySound documentation lists all valid flags. Public Const SND_SYNC = &H0 play synchronously Public Const SND_ASYNC = &H1 play asynchronously Public Const SND_FILENAME = &H20000 name is file name Public Const SND_RESOURCE = &H40004 name is resource name or atom Public Sub PlaySoundFile(ByVal filename As String) Plays a sound from filename. PlaySound(filename,Nothing,SND_FILENAME Or SND_ASYNC) End Sub End Class __________________________________________________________________________ 音乐没有关 __________________________________________________________________________ 怎么关掉啊？（注：代码中SoundInst.PlaySoundFile( )是多余的，不好意思。） __________________________________________________________________________ SND_SYNC __________________________________________________________________________