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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