Run a .dll in C#

[Leif]

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Subject: Run a .dll in C#
From: "Leif" <l_*****@hotmail.com> Sent: 7/21/2003
6:05:01 AM


I am trying to reproduce a VB6 application in C#. the VB
program extracts the data froma .wav file and sends it
(or calls, not really sure of the proper terminology) to
a .dll file which then uses the information.

the following VB code seems to accomplish this task but I
am having a hard time finding instructions on similar code
for C#. any assistance (examples, sample code, articles
etc) would be greatly appreciated.

here is the VB code:

Private Declare Sub FFTSingle Lib "C:\FFT.dll"
Alias "fft_float" _
(ByVal NumSamples As Long, ByVal InverseTransform As
Boolean, RealIn As Single, _
ImagIn As Single, RealOut As Single, ImagOut As Single)
the following command is used in a separate event:

FFTSingle 8192, False, RealIn(1), ImagIn(1), RealOut(1),
ImagOut(1)

Thanks for the assistance,

[Gabriel Esparza-Romero [MSFT]]

Hi

The C# equivalent would be more or less this:

[DllImport("C:\\FFT.dll")]
private static extern void FFTSingle (long NumSamples, bool InverseTransform, IntPtr RealIn, IntPtr ImagIn, ref IntPtr RealOut, ref IntPtr ImagOut);

I'm guessing the direction of the last four parameters as well as the type. You will need to add a using clause for the System.Runtime.InteropServices
namespace.

hope this helps

--------------------

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Subject: Run a .dll in C#
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Subject: Run a .dll in C#
From: "Leif" <l_*****@hotmail.com> Sent: 7/21/2003
6:05:01 AM


I am trying to reproduce a VB6 application in C#. the VB
program extracts the data froma .wav file and sends it
(or calls, not really sure of the proper terminology) to
a .dll file which then uses the information.

the following VB code seems to accomplish this task but I
am having a hard time finding instructions on similar code
for C#. any assistance (examples, sample code, articles
etc) would be greatly appreciated.

here is the VB code:

Private Declare Sub FFTSingle Lib "C:\FFT.dll"
Alias "fft_float" _
(ByVal NumSamples As Long, ByVal InverseTransform As
Boolean, RealIn As Single, _
ImagIn As Single, RealOut As Single, ImagOut As Single)
the following command is used in a separate event:

FFTSingle 8192, False, RealIn(1), ImagIn(1), RealOut(1),
ImagOut(1)

Thanks for the assistance,

--
Gabriel Esparza-Romero, Visual C# Team
This posting is provided "AS IS" with no warranties, and confers no rights. Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

[Leif]

thnaks

-----Original Message-----
Hi

The C# equivalent would be more or less this:

[DllImport("C:\\FFT.dll")]
private static extern void FFTSingle (long NumSamples, bool InverseTransform, IntPtr RealIn, IntPtr ImagIn, ref
IntPtr RealOut, ref IntPtr ImagOut);
I'm guessing the direction of the last four parameters as well as the type. You will need to add a using clause for
the System.Runtime.InteropServicesnamespace.

hope this helps

--------------------

Content-Class: urn:content-classes:message
From: "Leif" <l_*****@hotmail.com>
Sender: "Leif" <l_*****@hotmail.com>
Subject: Run a .dll in C#
Date: Mon, 21 Jul 2003 06:27:17 -0700
Lines: 36
Message-ID: <07****************************@phx.gbl>
MIME-Version: 1.0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Newsreader: Microsoft CDO for Windows 2000
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300
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. Reply (E-mail) Forward (E-mail)

Subject: Run a .dll in C#
From: "Leif" <l_*****@hotmail.com> Sent: 7/21/2003
6:05:01 AM


I am trying to reproduce a VB6 application in C#. the VB
program extracts the data froma .wav file and sends it
(or calls, not really sure of the proper terminology) to
a .dll file which then uses the information.

the following VB code seems to accomplish this task but Iam having a hard time finding instructions on similar codefor C#. any assistance (examples, sample code, articles
etc) would be greatly appreciated.

here is the VB code:

Private Declare Sub FFTSingle Lib "C:\FFT.dll"
Alias "fft_float" _
(ByVal NumSamples As Long, ByVal InverseTransform As
Boolean, RealIn As Single, _
ImagIn As Single, RealOut As Single, ImagOut As Single)
the following command is used in a separate event:

FFTSingle 8192, False, RealIn(1), ImagIn(1), RealOut(1),
ImagOut(1)

Thanks for the assistance,

--
Gabriel Esparza-Romero, Visual C# Team
This posting is provided "AS IS" with no warranties, and

confers no rights. Use of included script samples are
subject to the terms specified athttp://www.microsoft.com/info/cpyright.htm

.