FieldOffset in SmartDevice project

[Guest]

Hi all

Is there anybody who tried to use the FieldOffset attribute in Compact Framework? I see the online help, and the Microsoft write "in Explicit type in StructLayout is supported by the .NET Compact Framework". And when I use it, it makes an exception "FieldOffset could not be found". It's very important to me

If somebody can help me, I will thank it very much

(Sorry for bad english :-

Zsomb

ps: here is a simple test cod

using System.Runtime.InteropServices

[StructLayout(LayoutKind.Explicit)
public class testclas

[FieldOffset(0)] public int left; > first exceptio
[FieldOffset(2)] public int right; > and again exceptio
}

 

[Jon Skeet [C# MVP]]

Is there anybody who tried to use the FieldOffset attribute in
Compact Framework?

I don't believe it's supported by the Compact Framework.

I see the online help, and the Microsoft write "in
Explicit type in StructLayout is supported by the .NET Compact
Framework".

Where does it say that, out of interest?

 

[Guest]

Hi

Thanks for the answer. We see this site at first

http://msdn.microsoft.com/library/d...RuntimeInteropServicesLayoutKindClassTopic.as

It writes "Supported by Compact Framework

And now we are navigating the next site

http://msdn.microsoft.com/library/e...eropservicesfieldoffsetattributeclasstopic.as

You told the truth: it doesn't supported by CF

But it isn't clear to me. Why does it support the LayoutKind.Explicit, and doesn't support the FieldOffset

form the MSDN
FieldOffset: "This attribute is used when System.Runtime.InteropServices.StructLayoutAttribute, with LayoutKind.Explicit ...

Thanks agai

Zsombi

 

[Jon Skeet [C# MVP]]

Thanks for the answer. We see this site at first:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpre
f/html/frlrfSystemRuntimeInteropServicesLayoutKindClassTopic.asp
Right.

It writes "Supported by Compact Framework"

And now we are navigating the next site:

http://msdn.microsoft.com/library/en-us/cpref/html/frlrfsystemruntime
interopservicesfieldoffsetattributeclasstopic.asp

You told the truth: it doesn't supported by CF.

But it isn't clear to me. Why does it support the
LayoutKind.Explicit, and doesn't support the FieldOffset?

Possibly there's some internal use of Explicit - not sure. Either way,
it doesn't look like you're going to be able to set the field offset

 

[Chris Tacke, eMVP]

In the CF sequential layouts are the only supported option. You'll have to
manually do the offsets or use a BitVector32 for bit field offsets.

--
Chris Tacke, eMVP
Co-Founder and Advisory Board Member
www.OpenNETCF.org
---
---
Principal Partner
OpenNETCF Consulting
www.OpenNETCF.com

Hi all,

Is there anybody who tried to use the FieldOffset attribute in Compact

Framework? I see the online help, and the Microsoft write "in Explicit type
in StructLayout is supported by the .NET Compact Framework". And when I use
it, it makes an exception "FieldOffset could not be found". It's very
important to me.

If somebody can help me, I will thank it very much!

(Sorry for bad english

Zsombi

ps: here is a simple test code

using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Explicit)]
public class testclass
{
[FieldOffset(0)] public int left; > first exception
[FieldOffset(2)] public int right; > and again exception
}