Speed of C# and GDI+

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Date: Thu, 29 Apr 2004 20:18:20 GMT

Hello,

I'm going to go with my project one of two possible ways
and I have to make some decisions. First, I'd like
to know more details and others experiences.

I have an ActiveX component which draws a lot of geometries
(lines, points,polygons) and manages
large amount of objects of geometries (hundreds and even thousands).
I would like to use it under Pocket PC with .NET
Compact Framework without the Odyssey CFCOM solution.
As we know, Compact Framework does not support ActiveX
hosting at all (natively).
So, there are two possibilities for me:

1 - try to make my ActiveX simple COM object without any GUI elements
and serving only data structures and geometries computations
and geometries would be drawn by GDI+ (.NET CF).

2 - use only C++ and native code.

The former would provide me with .NET advantages and faster
GUI development but as I know there are performance limitations.
Am I right ? What about my architecture of geometries rendering
using GDI + ? What about the performance ?
The latter solution gives me the best control over
my application and components, but it's harder
to develop GUI and other things.

If I'd choose the first one, I have to redevelop my ActiveX
to simple COM DLL wrapped by P/Invoke without any GUI objects
(no ActiveX elements).
The question is how it (P/Invoke, marshaling, etc.) will
influence the performance of my application ?
Are graphics operations under .NET CF fast ?
Is there any comparsion ?

Are there people having similar problems with making
decision about going unmanage C++ or managed .NET CF way ?
Could you share your experience ?

Thanks for any information !

BTW, I post it on two newsgroups,
microsoft.public.dotnet.framework.compactframework
and microsoft.public.pocketpc.developer.
If I broke netiquete, forgive me ;-)

-- 
Mateusz Łoskot
mateusz at loskot dot net

• Previous message: Chris Tacke, eMVP: "Re: Simple Form Question"
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