Ken thanks
this have been a great help now the program is running faster now
is there any where on the net that i can get a list of the API??

regards
Soon Lee
----- Original Message -----
From: "Ken Pergola" <no_spam@LOCALNET.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Friday, June 25, 2004 11:19 PM
Subject: Re: [OT]: What is the fastest way to fill a matrix in VB6


> Soon Lee wrote:
>
>> Any one know of any fast method of filling or zeroing a big matrix beside
>> using the "FOR" method
>
> Hi Soon Lee,
>
> Have you tried one of the several Win32 API functions -- especially the
> ZeroMemory "function"?:
>
> I would give ZeroMemory a whirl. Others in the "family" are 'CopyMemory'
> and
> 'FillMemory'.
> Just remember you are venturing out of the protection of VB6 -- as long as
> you know the ramifications, feel free to play with these Win32 API
> routines.
>
>
> Public Declare Sub ZeroMemory Lib "kernel32" Alias "RtlMoveMemory"
> (Destination As Any, ByVal numBytes As Long)
>
> Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory"
> (Destination As Any, Source As Any, ByVal Length As Long)
>
> Public Declare Sub FillMemory Lib "kernel32.dll" Alias "RtlFillMemory"
> (Destination As Any, ByVal Length As Long, ByVal Fill As Byte)
>
> NOTE: I would double-check the above API declarations online on MSDN just
> for correctness.
>
>
> CAVEAT EMPTOR:
> Please read the following disclaimer carefully. I'm using the following
> declarations in some of my VB6 code, but I have personally modified the
> data
> types in some areas. You might want to use the standard Win32 API
> declarations.
>
> Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory"
> (Destination As Byte, _
>                                                                    Source
> As Byte, _
>                                                                    ByVal
> Length As Long)
>
>
> Public Declare Sub FillMemory Lib "kernel32" Alias "RtlFillMemory"
> (Destination As Byte, _
>                                                                    ByVal
> Length As Long, _
>                                                                    ByVal
> Fill As Byte)
>
>
> Public Declare Sub ZeroMemory Lib "kernel32" Alias "RtlZeroMemory"
> (Destination As Byte, _
>                                                                    ByVal
> Length As Long)
>
>
> Hope this gets you on the right track.
>
> Best regards,
>
> Ken Pergola
>
> P.S. I'm sure the formatting got mangled, but I'm confident you can stitch
> things back together. :)
>
> --
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