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by: Sandy |
last post by:
Hello!
Help!!!!
I have ten zillion books that attempt to describe the
difference between ByVal and ByRef and none of them are
clear to me. I have gathered that ByVal makes a copy and
ByRef points to something and changes it. The default for
simple data types is ByVal and for objects, it's ByRef.
Am I correct so far? If so, I still don't have a clue as
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by: Hei |
last post by:
Hi,
i know the difference of ByRef and ByVal, in case if use byref or byval
don't affect the result which one should prefer? (less memory use, better
performance ....issue)
thx
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by: Rob Panosh |
last post by:
Hello,
Ok here is the senerio:
.....
Dim myArrayList as New ArrayList(0)
me.Test_A( myArrayList )
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by: Carlos Gomez |
last post by:
In VB6 the default for passing variables was ByRef. It was faster and
used less memory. Why did MS changed that? Are there any advantages
using ByVal over ByRef? (other than ByVal impeding you from changing
the original variable passed)
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by: Lance Geeck |
last post by:
I have many items that I lifted off from Microsoft's website several years
ago. These samples were in VB6.
I now want to convert an application to VB.NET. I am getting an error
that says "As Any is not supported in a declare statement" during the
automated
Conversion process.
Some examples of this are:
Private Declare Sub CopyMem Lib "kernel32" Alias "RtlMoveMemory"(ByRef
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by: Richard |
last post by:
Hi,
I am passing a structure to a subroutine where the passed parameter has been
declared as ByVal.
However, changes made to the passed variable inside the subroutine flow
through to the actual variable that has been passed over, even though with
ByVal this should not happen.
Has anybody else discovered this or am I doing completely wrong /
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by: Niklas |
last post by:
Hi
What I have learned is that a variable is just a reference when dealing with Objects.
Are you supposed to use ByVal or ByRef in functions? They produce the same result or have I missed something?
Regards
/Niklas
Public Class Main
Shared Sub Main()
Dim testPropObj As New MyPropertObject
testPropObj.MyInt = 1
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by: **Developer** |
last post by:
Notice below I sometimes used the "A" version. I found by cut-and-try that
only the "A" version would work correctly. Anyone have a suggestion of why
the "W" version would not work correctly?
One reason is that the ByRef or ByVal does not show by InteliSence so the
"p" would help there.
------
Secondly, I'd like to be consistent with the parameter names. I'd like to
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by: Ken |
last post by:
Newbie, having a problem upgrading from VB6 to dotNet.
I am trying to call some subs from a NIST dll and I don't know how to
call them in Net.
I have used the Upgrade VB6 wizzard on my old source and got a Modual
and a form.
Module NIST_Module
Public Declare Sub SETUPdll Lib "Refprop" (ByRef i As Integer,
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: bsmnconsultancy |
last post by:
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