Hi all,

I have a third party ActiveX control, with the documented exported
functions, written for Win CE 3.0, I guess using eVC. My question is what is
the best strategy for accessing some of its functions from within C#?

After reviewing some past posts via Google, I understand that CF does not
support ActiveX controls. I did notice a paper that mentioned using P/Invoke
to access an ActiveX control via a eVC DLL wrapper. Since I have some
knowledge of eVC but not very much on ActiveX controls, I am really asking
for a starting point in creating the DLL wrapper so that I can call it from
P/Invoke, which I have some knowledge of also.

Earlier this year, I used P/Invoke quite a bit to call functions in a third
party DLL library. What I am not sure here is the ActiveX control as I have
never had to interface with one before.

Regards,
Neville Lang

You need to create a DLL that calls the COM interfaces and returns usable
pointers through a P/Invoke supported interface. Take a look at the POOM
wrapper sample at gotdotnet.

-Chris


"Neville Lang" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> Hi all,
>
> I have a third party ActiveX control, with the documented exported
> functions, written for Win CE 3.0, I guess using eVC. My question is what
is
> the best strategy for accessing some of its functions from within C#?
>
> After reviewing some past posts via Google, I understand that CF does not
> support ActiveX controls. I did notice a paper that mentioned using
P/Invoke
> to access an ActiveX control via a eVC DLL wrapper. Since I have some
> knowledge of eVC but not very much on ActiveX controls, I am really asking
> for a starting point in creating the DLL wrapper so that I can call it
from
> P/Invoke, which I have some knowledge of also.
>
> Earlier this year, I used P/Invoke quite a bit to call functions in a
third
> party DLL library. What I am not sure here is the ActiveX control as I
have
> never had to interface with one before.
>
> Regards,
> Neville Lang
>
>

Chris,

Thank you for the tip. I had a look at GoDotNet, did a search on POOM and
nothing showed up. I then did a search on Pocket Outlook and, although there
were some entries, I could not find the sample you referred to. Do you have
a specific link I could follow?

Regards,
Neville Lang



"Chris Tacke, eMVP" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> You need to create a DLL that calls the COM interfaces and returns usable
> pointers through a P/Invoke supported interface. Take a look at the POOM
> wrapper sample at gotdotnet.
>
> -Chris
>
>
> "Neville Lang" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
> > Hi all,
> >
> > I have a third party ActiveX control, with the documented exported
> > functions, written for Win CE 3.0, I guess using eVC. My question is
what
> is
> > the best strategy for accessing some of its functions from within C#?
> >
> > After reviewing some past posts via Google, I understand that CF does
not
> > support ActiveX controls. I did notice a paper that mentioned using
> P/Invoke
> > to access an ActiveX control via a eVC DLL wrapper. Since I have some
> > knowledge of eVC but not very much on ActiveX controls, I am really
asking
> > for a starting point in creating the DLL wrapper so that I can call it
> from
> > P/Invoke, which I have some knowledge of also.
> >
> > Earlier this year, I used P/Invoke quite a bit to call functions in a
> third
> > party DLL library. What I am not sure here is the ActiveX control as I
> have
> > never had to interface with one before.
> >
> > Regards,
> > Neville Lang
> >
> >
>
>

There's also a component from Odyssey Software which allows .NET CF
applications to use ActiveX controls directly, CFCom, I think it's called.
If you have a complicated control to wrap, I'm sure it's cheaper to go that
way.

Paul T.

"Chris Tacke, eMVP" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> You need to create a DLL that calls the COM interfaces and returns usable
> pointers through a P/Invoke supported interface. Take a look at the POOM
> wrapper sample at gotdotnet.
>
> -Chris
>
>
> "Neville Lang" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
> > Hi all,
> >
> > I have a third party ActiveX control, with the documented exported
> > functions, written for Win CE 3.0, I guess using eVC. My question is
what
> is
> > the best strategy for accessing some of its functions from within C#?
> >
> > After reviewing some past posts via Google, I understand that CF does
not
> > support ActiveX controls. I did notice a paper that mentioned using
> P/Invoke
> > to access an ActiveX control via a eVC DLL wrapper. Since I have some
> > knowledge of eVC but not very much on ActiveX controls, I am really
asking
> > for a starting point in creating the DLL wrapper so that I can call it
> from
> > P/Invoke, which I have some knowledge of also.
> >
> > Earlier this year, I used P/Invoke quite a bit to call functions in a
> third
> > party DLL library. What I am not sure here is the ActiveX control as I
> have
> > never had to interface with one before.
> >
> > Regards,
> > Neville Lang
> >
> >
>
>

Paul,

Thank you for that advice but since I want to do a public roll-out of my
app, their licence fees are prohibitive.

I am simply looking for a paper or information on how I might be able to
build a wrapper in eVC to interact with an ActiveX control written for WinCE
3.0 so that I can use P/Invoke from C# CF.

At this stage, I have very limited knowledge of ActiveX components but some
knowledge of eVC and much better knowledge, over the last months, on C# for
CF.

Regards,
Neville Lang


"Paul G. Tobey [eMVP]" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> There's also a component from Odyssey Software which allows .NET CF
> applications to use ActiveX controls directly, CFCom, I think it's called.
> If you have a complicated control to wrap, I'm sure it's cheaper to go
that
> way.
>
> Paul T.
>
> "Chris Tacke, eMVP" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
> > You need to create a DLL that calls the COM interfaces and returns
usable
> > pointers through a P/Invoke supported interface. Take a look at the
POOM
> > wrapper sample at gotdotnet.
> >
> > -Chris
> >
> >
> > "Neville Lang" <(E-Mail Removed)> wrote in message
> > news:%(E-Mail Removed)...
> > > Hi all,
> > >
> > > I have a third party ActiveX control, with the documented exported
> > > functions, written for Win CE 3.0, I guess using eVC. My question is
> what
> > is
> > > the best strategy for accessing some of its functions from within C#?
> > >
> > > After reviewing some past posts via Google, I understand that CF does
> not
> > > support ActiveX controls. I did notice a paper that mentioned using
> > P/Invoke
> > > to access an ActiveX control via a eVC DLL wrapper. Since I have some
> > > knowledge of eVC but not very much on ActiveX controls, I am really
> asking
> > > for a starting point in creating the DLL wrapper so that I can call it
> > from
> > > P/Invoke, which I have some knowledge of also.
> > >
> > > Earlier this year, I used P/Invoke quite a bit to call functions in a
> > third
> > > party DLL library. What I am not sure here is the ActiveX control as I
> > have
> > > never had to interface with one before.
> > >
> > > Regards,
> > > Neville Lang
> > >
> > >
> >
> >
>
>

Chris,

I should have done a wider search of Google. I have found some more
information on POOM. Thank you again for the tip.

Regards,
Neville Lang




"Chris Tacke, eMVP" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> You need to create a DLL that calls the COM interfaces and returns usable
> pointers through a P/Invoke supported interface. Take a look at the POOM
> wrapper sample at gotdotnet.
>
> -Chris
>
>
> "Neville Lang" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
> > Hi all,
> >
> > I have a third party ActiveX control, with the documented exported
> > functions, written for Win CE 3.0, I guess using eVC. My question is
what
> is
> > the best strategy for accessing some of its functions from within C#?
> >
> > After reviewing some past posts via Google, I understand that CF does
not
> > support ActiveX controls. I did notice a paper that mentioned using
> P/Invoke
> > to access an ActiveX control via a eVC DLL wrapper. Since I have some
> > knowledge of eVC but not very much on ActiveX controls, I am really
asking
> > for a starting point in creating the DLL wrapper so that I can call it
> from
> > P/Invoke, which I have some knowledge of also.
> >
> > Earlier this year, I used P/Invoke quite a bit to call functions in a
> third
> > party DLL library. What I am not sure here is the ActiveX control as I
> have
> > never had to interface with one before.
> >
> > Regards,
> > Neville Lang
> >
> >
>
>