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vb.net調(diào)用beep vbnet main

VB.net如何加載音效?

方法一:調(diào)用系統(tǒng)DLL(這個有點不完善,也就是播放聲音時窗體無法控制,效果相當于Enabled=true,但音頻播放完畢后就沒事了)

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Private?Declare?Function?sndPlaySound?Lib?"Winmm.dll"?Alias?"sndPlaySoundA"?(ByVal?lpszSoundName?As?String,?ByVal?uFlags?As?Long)?As?Long

Private?Sub?Button1_Click(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?Button1.Click

Dim?SoundFile?As?String,?Result?As?Long

SoundFile?=?"D:\KuGou\Pianoboy?-?第105天.wav"?'此處為路徑

Result?=?sndPlaySound(SoundFile,?0)

End?Sub

方法二:使用WindowsMediaPlayer(WindowsMediaPlayer1的可見為False)

先添加一個windowsmediaplayer控件(工具箱里沒有,需要手動添加)

Private?Sub?Button1_Click(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?Button1.Click

WindowsMediaPlayer1.visible=False

Me.WindowsMediaPlayer1.URL?=?"D:\KuGou\Pianoboy?-?第105天.mp3"

End?Sub

上面的都是點擊button1(按鈕1)后播放聲音,若是鼠標移動到某控件上發(fā)出聲音的話改一下觸發(fā)事件就OK了。

我在VB.net程序中加了Beep沒有用!

用Console.Beep(int,int)這個方法就可以了。

另外,建議把提示出錯的代碼直接放入Catch中,提示鳴放的代碼放入Try中。

VB.NET中播放背景音樂最簡單的辦法是什么啊?

給你我的程序,自己研究一下吧,我也不是很明白。

Public Class Form1

Private Declare Auto Function PlaySound Lib "winmm.dll" (ByVal lpszSoundName As String, ByVal hModule As Integer, ByVal dwFlags As Integer) As Integer

Const SND_filename As Integer = H20000

Const SND_alias As Integer = H10000

Const SND_sync As Integer = H0

Declare Auto Function waveOutGetNumDevs Lib "winmm.dll" Alias "waveOutGetNumDevs" () As Integer

Declare Auto Function sndPlaySound Lib "winmm.dll" (ByVal filename As String, ByVal options As Integer) As Integer

Private Const SND_memory As Integer = H4

Private Const SND_async As Integer = H1

Private Const proess_domain As String = ""

Const SND_sync1 = H0

Const SND_async1 = H1

Const SND_nodefault = H2

Const SND_loop = H8

Const SND_nostop = H10

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Beep()

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

Dim strFileName As String = "start.wav"

PlaySound(strFileName, 0, SND_filename)

End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click

PlaySound("systemstart", 0, SND_alias Or SND_sync)

End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click

Dim ret As Long

Dim strfilename As String

strfilename = "start.wav"

ret = sndPlaySound(strfilename.ToCharArray, 0)

End Sub

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click

Dim i As Integer

i = waveOutGetNumDevs()

If i 0 Then

MsgBox("可以播放聲音", 64, "檢測")

Else

MsgBox("不能播放聲音", 64, "檢測")

End If

End Sub

End Class

VB.NET,如何調(diào)用外部程序?

兩種方法

1.

Shell(""Explorer.exe", AppWinStyle.NormalFocus")

2.

Dim proc As New Process

proc.StartInfo.FileName="Explorer.exe"

proc.Start

方法2給予更多的控制,如結(jié)束進程的方法Kill

vb.net怎么編程實現(xiàn)從音頻輸出口輸出指定頻率指定時長和占空比的單音信號。

1.用Win32 API PlaySound

PlaySound位于"winmm.dll"中,可以根據(jù)輸入?yún)?shù)的不同,播放WAV類型的音樂。在VB.NET中調(diào)用跟VB6中差不多:

先聲明:

Private Declare Auto Function PlaySound Lib "winmm.dll" (ByVal lpszSoundName As String, ByVal hModule As Integer, ByVal dwFlags As Integer) As Integer

Const SND_FILENAME As Integer = H20000

Const SND_ALIAS As Integer = H10000

Const SND_SYNC As Integer = H0

具體還有很多常量,不一一列舉,下面是播放一個wav文件的例子

Dim mstrfileName As String = "c:\eagle2.wav"

PlaySound(mstrfileName, 0, SND_FILENAME)

注意上面的播放是非同步的,就是說它并不會播放完畢才結(jié)束。如果把上面的代碼寫在一個Button.Click的事件處理程序中,第二次點擊的時候它會打斷第一次的播放,重新開始。

當然我們也可以調(diào)用系統(tǒng)的聲音:

PlaySound("SystemStart", 0, SND_ALIAS Or SND_SYNC)

' 以同步的方式調(diào)用系統(tǒng)啟動時候的聲音。

2. 調(diào)用媒體播放器控件

VB.NET中并沒有提供媒體播放器的.NET組件,沒辦法我們還是調(diào)用以前Com組件Windows Media Player。當然除了聲音外,還可以播放視頻文件。

首先把媒體播放器控件加到工具欄中,調(diào)用還是簡單的寫一下吧:)

Private Sub playMediaFile(ByVal mediaFileName As String)

With MediaPlayer1

.Stop()

.FileName = "c:\mp3\愛不愛我.mp3"

.Play()

End With

End Sub


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