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Calling wavpackdll.dll from VB
post Oct 13 2009, 20:05
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I have created a simple audio program with Visual basic 6 and would like to include Wavpack support, specifically the decoding functions. I keep getting a “Bad dll calling convention” error when I try to call the WavpackOpenFileInput function.

VB Declare statement
Private Declare Function WavpackOpenFileInput Lib "wavpackdll.dll" ( _
                     ByVal infilename As String, _
                     ByVal error As String, _
                     ByVal Flags As Long, _
                     ByVal norm_offset As Long) As Long

Calling fuinction
Public Function WaveUnpack(WavPackFileSpec As String) As Boolean

Dim WavpackContext   As Long
Dim ErrorString      As String
Dim Flags1           As Long
Dim norm_offset      As Long

Flags1 = 0
norm_offset = 0
ErrorString = Space(80)

WavpackContext = WavpackOpenFileInput(WavPackFileSpec, ErrorString, Flags1, norm_offset)

End Function

Any help please

Microsoft Visual Basisc 6.0 (SP6)
Microsoft XP SP2
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