Throw New Win32Exception("waveOutMessage() error, Result: " & result.ToString("x8") & ", " & err.ToString) Result = waveOut.Message(WAVE_MAPPER, DRVM_MAPPER_PREFERRED_GET, hId, hFlags) ' It would be easier to declare a nice overload with ByRef Integers. Private Function GetIdOfDefaultWaveOutDevice() As Integer Private Sub DisplayDefaultWaveOutDevice()ĭim currentDefault As Integer = GetIdOfDefaultWaveOutDevice()ĭim device As WaveOutDevice = DirectCast(DevicesComboBox.Items(currentDefault), WaveOutDevice)ĭefaultDeviceLabel.Text = "Defualt: " & Throw New Win32Exception("GetDevCaps() error, Result: " & result.ToString("x8") & ", " & err.ToString)ĭ(New WaveOutDevice(i, caps)) ' dig around in the registry to get the full name.ĭim result As Integer = waveOut.GetDevCaps(i, caps, Marshal.SizeOf(caps))ĭim err As MMSYSERR = DirectCast(result, MMSYSERR) ' The name is truncated to 31 chars by the api call. ' Get a name - its in a WAVEOUTCAPS structure. ' How many wave out devices are there? WaveOutGetNumDevs API call.ĭim waveOutDeviceCount As Integer = waveOut.GetNumDevs()įor i As Integer = 0 To waveOutDeviceCount - 1 List available devices Private Sub RefreshInformation() ![]() Set default Wave Out Audio Device - VB.Net / DRVM_MAPPER_PREFERRED_SETįirst i will try to split the code into 2 parts:.The following example is taken from the link below, it is a code blonging to a Windows form and contains the functionality needed to list all available audio devices and choose the default device (the one that will act as sound output). You can do this using WindowsMedia.Net library. Ret = mciSendString("Open audio", CStr(0), 0, 0) Ret = mciSendString("Open " & Chr(34) & ofd.FileName & Chr(34) & " alias audio", CStr(0), 0, 0) Ret = mciSendCommand(wDeviceID, MCI_SET, MCI_WAVE_OUTPUT, parms) ' the value is not in the expected range error is here and it spots parms Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Public Declare Function mciGetDeviceID Lib "winmm.dll" Alias "mciGetDeviceIDA" (ByVal lpstrName As String) As Integer Public Declare Function mciSendString Lib "winmm.dll" Alias "mciSendStringA" (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, ByVal uReturnLength As Integer, ByVal hwndCallback As Integer) As Integer Public Declare Function mciGetErrorString Lib "winmm.dll" Alias "mciGetErrorStringA" (ByVal dwError As Integer, ByVal lpstrBuffer As String, ByVal uLength As Integer) As Integer Public Declare Function mciSendCommand Lib "winmm.dll" Alias "mciSendCommandA" (ByVal wDeviceID As Integer, ByVal uMessage As String, ByVal dwParam1 As Integer, ByVal dwParam2 As Object) As Integer I spotted where the error is in my codes: Public Declare Function waveOutGetNumDevs Lib "winmm" () As Integer I have these codes but there becomes an error "the value is not in the expected range". Everything is okey for my codes but i can't list the names of sound cards and ring the bell on specified sound card. Finally my program will ring the bells on that sound card. First I will list the sound cards to user. ![]() ![]() The computer which runs my program has two or more sound cards. ![]() They benefit from our Active Control system by allowing more confidentiality and greater concentration to their employees.I have a school bell project coded with Visual Basic 2010 Express. EY installed a sound masking system on multiple floors, thus covering open areas and closed offices. They put aside the traditional corner-office design which incorporates a flexible, collaborative work environment. They are taking steps to become more attractive in order to increase and retain the pool of skilled labour by innovating with his “Workplace of the Future” initiative. Soft dB’s products and services are sold in all continents to companies such as Wells Fargo, Suncor, IBM, Microsoft and Ernst & Young (EY).ĮY is one of the largest professional services firms in the world. Soft dB’s sound masking system SmartSMS-Net is a leading patented innovation that allows office workers around the world to enjoy more privacy, productivity and comfort. Our company offers innovative products and services to improve productivity and working environments by optimizing acoustic comfort for commercial offices and health care facilities. Soft dB has been recognized worldwide for its expertise in sound masking.
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