How get the Area Handle ?

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How get the Area Handle ?

by Brice Cadran :: Rate this Message:

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Some parts of this message have been removed. Learn more about Nabble's security policy.

Hello,

I want to put any windows application, like MS Word for example, in my Area Plug-in zone.

I want to do this with the SetParent method but I need the handle of my area. How can I get the Handle of the Area Plug-in ?

Best Regards,

Brice Cadran

Re: How get the Area Handle ?

by Rob Laveaux :: Rate this Message:

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On 22 jul 2009, at 17:26, Brice Cadran wrote:

> I want to put any windows application, like MS Word for example, in
> my Area Plug-in zone.
> I want to do this with the SetParent method but I need the handle of
> my area. How can I get the Handle of the Area Plug-in ?

Do you mean the window handle (HWND) of the 4D window on which the
plugin area resides?
You can obtain that one by calling PA_GetHWND( 0L ) (during for
example the eAE_Init event).

HTH,

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

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RE: How get the Area Handle ?

by Brice Cadran :: Rate this Message:

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Hi and thanks for help.
It's not really what I want. I think I need the Handle of the PlugIn Zone to
put an application into it !
So how can I get this Handle ?
Thanks to help me...

Best regards,
Brice Cadran

-----Message d'origine-----
De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de
Rob Laveaux
Envoyé : jeudi 23 juillet 2009 14:30
À : 4D Plugin Talk
Objet : Re: How get the Area Handle ?

On 22 jul 2009, at 17:26, Brice Cadran wrote:

> I want to put any windows application, like MS Word for example, in
> my Area Plug-in zone.
> I want to do this with the SetParent method but I need the handle of
> my area. How can I get the Handle of the Area Plug-in ?

Do you mean the window handle (HWND) of the 4D window on which the
plugin area resides?
You can obtain that one by calling PA_GetHWND( 0L ) (during for
example the eAE_Init event).

HTH,

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

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Re: How get the Area Handle ?

by Rob Laveaux :: Rate this Message:

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On 23 jul 2009, at 15:12, Brice Cadran wrote:

> It's not really what I want. I think I need the Handle of the PlugIn
> Zone to
> put an application into it !
> So how can I get this Handle ?

You create it yourself.

Let's say you have a class named CMyPluginArea.
You then just create an instance of that class and return the memory
address of the instance back to 4D.
In subsequent commands you just typecast the longint value back to a
pointer.

For example:

CMyPluginArea* area = NULL;

event = PA_GetAreaEvent( params );

switch ( event )
{
// --- Initialisation
case eAE_InitArea :
area = new CMyPluginArea();
PA_SetAreaReference( params, area );
break;

// --- Deinitialisation
case eAE_Deinit :
area = (CMyPluginArea*) PA_GetAreaReference( params );
delete area;
break;
}

HTH,

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

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RE: How get the Area Handle ?

by Jean-François DAVID :: Rate this Message:

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Hi Rob,

Thanks again for help, Brice works with me and we works together in this
project.
So we just discovered this class : CMyPluginArea.
So we have to create an instance of this one and use the longint to work in
the area ?
Can we use this longint like an Handle of the Plugin zone ?

Best regards,
Jean-François DAVID

-----Message d'origine-----
De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de
Rob Laveaux
Envoyé : jeudi 23 juillet 2009 15:32
À : 4D Plugin Talk
Objet : Re: How get the Area Handle ?

On 23 jul 2009, at 15:12, Brice Cadran wrote:

> It's not really what I want. I think I need the Handle of the PlugIn
> Zone to
> put an application into it !
> So how can I get this Handle ?

You create it yourself.

Let's say you have a class named CMyPluginArea.
You then just create an instance of that class and return the memory
address of the instance back to 4D.
In subsequent commands you just typecast the longint value back to a
pointer.

For example:

CMyPluginArea* area = NULL;

event = PA_GetAreaEvent( params );

switch ( event )
{
// --- Initialisation
case eAE_InitArea :
area = new CMyPluginArea();
PA_SetAreaReference( params, area );
break;

// --- Deinitialisation
case eAE_Deinit :
area = (CMyPluginArea*) PA_GetAreaReference( params );
delete area;
break;
}

HTH,

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

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RE: How get the Area Handle ?

by Jean-François DAVID :: Rate this Message:

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Sorry but we don't have this class : CMyPluginArea

Jean-François DAVID.

-----Message d'origine-----
De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de
Rob Laveaux
Envoyé : jeudi 23 juillet 2009 15:32
À : 4D Plugin Talk
Objet : Re: How get the Area Handle ?

On 23 jul 2009, at 15:12, Brice Cadran wrote:

> It's not really what I want. I think I need the Handle of the PlugIn
> Zone to
> put an application into it !
> So how can I get this Handle ?

You create it yourself.

Let's say you have a class named CMyPluginArea.
You then just create an instance of that class and return the memory
address of the instance back to 4D.
In subsequent commands you just typecast the longint value back to a
pointer.

For example:

CMyPluginArea* area = NULL;

event = PA_GetAreaEvent( params );

switch ( event )
{
// --- Initialisation
case eAE_InitArea :
area = new CMyPluginArea();
PA_SetAreaReference( params, area );
break;

// --- Deinitialisation
case eAE_Deinit :
area = (CMyPluginArea*) PA_GetAreaReference( params );
delete area;
break;
}

HTH,

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

**********************************************************************
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Early Bird Pricing Ends August 28th - http://www.4D.com/summit

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***********************************************************************

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Re: How get the Area Handle ?

by Rob Laveaux :: Rate this Message:

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On 23 jul 2009, at 16:08, Jean-François DAVID wrote:

> Sorry but we don't have this class : CMyPluginArea

That's where your own code goes. You have to write it yourself.

class CMyPluginArea
{
// Your stuff here
};

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

**********************************************************************
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RE: How get the Area Handle ?

by Jean-François DAVID :: Rate this Message:

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I think I don't understand... Excuse me...

But, I just want to have the Handle of my Zone PlugIn... I don't understand,
When 4D load my form in which is my AreaPlugin, 4D doesn't attribute a
Handle of this zone ?

J-F
-----Message d'origine-----
De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de
Rob Laveaux
Envoyé : jeudi 23 juillet 2009 16:42
À : 4D Plugin Talk
Objet : Re: How get the Area Handle ?

On 23 jul 2009, at 16:08, Jean-François DAVID wrote:

> Sorry but we don't have this class : CMyPluginArea

That's where your own code goes. You have to write it yourself.

class CMyPluginArea
{
// Your stuff here
};

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

**********************************************************************
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Early Bird Pricing Ends August 28th - http://www.4D.com/summit

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***********************************************************************

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Re: How get the Area Handle ?

by Rob Laveaux :: Rate this Message:

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On 23 jul 2009, at 16:56, Jean-François DAVID wrote:

> I think I don't understand... Excuse me...
>
> But, I just want to have the Handle of my Zone PlugIn... I don't
> understand,
> When 4D load my form in which is my AreaPlugin, 4D doesn't attribute a
> Handle of this zone ?

No, you have to assign it yourself. It is your task to return a
reference for the plugin area.
Usually you use the memory address of a struct or object that contains
all the properties for your plugin area.

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

**********************************************************************
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Re: How get the Area Handle ?

by Miloslav Bystricky :: Rate this Message:

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On 23 Jul 2009, at 17:09, Rob Laveaux wrote:

> No, you have to assign it yourself. It is your task to return a
> reference for the plugin area.
> Usually you use the memory address of a struct or object that
> contains all the properties for your plugin area.

Rob,

As I understand it, he needs HWND. The HWND will be passed to another
application as parent window (to which that another application will
install its own content.)

However, it is not clear if the passed HWND will be filled by another
application, or if another application will create its own child
window in passed window. In first case (which is IMHO more probable)
the plugin should create child window of the size of plug-in area and
pass this window to external application.

We played with this idea, however it does not worked well in 4D (at
least till v2004, we are still testing it in v11.) We had problems to
propagate events received by child window to 4D, and there were some
problems in drawing to child window - I do not remember details - it
was some time ago. However, we are using the child window if we need
to install own event handlers on Windows - installing event handler to
4D window can cause problems.

IMHO, what is missing is the ability to register child windows with
4D. Then 4D would be able to install its own event handler and inspect
the events before they are received by plug-in. Or maybe we overlooked
this ability.

Peter Bozek
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RE: How get the Area Handle ?

by Michael Gilligan :: Rate this Message:

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JF,

Perhaps you and Rob are talking about two different things, hence the confusion.

When your plugin area gets called, there are a number of events that it will receive, init, deinit, update window, mouse down etc.

You can write this code as a class or as straight c code. To draw or write to your plugin area you need to call GetWindowDC for a drawing context and I imagine that that window handle is the handle that you are talking about. Rob is talking about the address of where your plugin code resides in memory.

Mike Gilligan

MedeaOne

--- On Thu, 7/23/09, Jean-François DAVID <jeanfrancois.david@...> wrote:

From: Jean-François DAVID <jeanfrancois.david@...>
Subject: RE: How get the Area Handle ?
To: "'4D Plugin Talk'" <4D-Plugins@...>
Date: Thursday, July 23, 2009, 10:56 AM

I think I don't understand... Excuse me...

But, I just want to have the Handle of my Zone PlugIn... I don't understand,
When 4D load my form in which is my AreaPlugin, 4D doesn't attribute a
Handle of this zone ?

J-F
-----Message d'origine-----
De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de
Rob Laveaux
Envoyé : jeudi 23 juillet 2009 16:42
À : 4D Plugin Talk
Objet : Re: How get the Area Handle ?

On 23 jul 2009, at 16:08, Jean-François DAVID wrote:

> Sorry but we don't have this class : CMyPluginArea

That's where your own code goes. You have to write it yourself.

class CMyPluginArea
{
// Your stuff here
};

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

**********************************************************************
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Register for 4D Summit 2009 Today
Early Bird Pricing Ends August 28th - http://www.4D.com/summit

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***********************************************************************

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RE: How get the Area Handle ?

by Jean-François DAVID :: Rate this Message:

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Some parts of this message have been removed. Learn more about Nabble's security policy.

Hi ,

I have to say thanks all for your help.

What we want it’s to know the Handle of the Area PlugIn Zone.

With this Handle we want to do a SetParent of any Windows Application.

The result is to have for example the notepad in an Are Plugin Zone which is on a 4D form.

Thanks for help, talk to you

J-F

De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de Michael Gilligan
Envoyé : jeudi 23 juillet 2009 17:45
À : 4D Plugin Talk
Objet : RE: How get the Area Handle ?

JF,

Perhaps you and Rob are talking about two different things, hence the confusion.

When your plugin area gets called, there are a number of events that it will receive, init, deinit, update window, mouse down etc.

Mike Gilligan

MedeaOne

--- On Thu, 7/23/09, Jean-François DAVID <jeanfrancois.david@...> wrote:

From: Jean-François DAVID <jeanfrancois.david@...>
Subject: RE: How get the Area Handle ?
To: "'4D Plugin Talk'" <4D-Plugins@...>
Date: Thursday, July 23, 2009, 10:56 AM

I think I don't understand... Excuse me...

But, I just want to have the Handle of my Zone PlugIn... I don't understand,
When 4D load my form in which is my AreaPlugin, 4D doesn't attribute a
Handle of this zone ?

J-F
-----Message d'origine-----
De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de
Rob Laveaux
Envoyé : jeudi 23 juillet 2009 16:42
À : 4D Plugin Talk
Objet : Re: How get the Area Handle ?

On 23 jul 2009, at 16:08, Jean-François DAVID wrote:

> Sorry but we don't have this class : CMyPluginArea

That's where your own code goes. You have to write it yourself.

class CMyPluginArea
{
// Your stuff here
};

- Rob Laveaux

--------------------------------------------------------
Pluggers Software
Bleriotlaan 62
2497 BM Den Haag
The Netherlands

Email: rob.laveaux@...
Website: http://www.pluggers.nl

--------------------------------------------------------

**********************************************************************
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Early Bird Pricing Ends August 28th - http://www.4D.com/summit

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***********************************************************************

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Re: How get the Area Handle ?

by Miloslav Bystricky :: Rate this Message:

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On 23 Jul 2009, at 17:44, Michael Gilligan wrote:

> You can write this code as a class or as straight c code. To draw
> or write to your plugin area you need to call GetWindowDC for a
> drawing context and I imagine that that window handle is the handle
> that you are talking about. Rob is talking about the address of
> where your plugin code resides in memory.
>

Yes, I know. Jean Francois is speaking about 'area handle' so it seems
that he means the handle maintained by 4D where area can store its
data (not code), but as he wants to pass that handle to another
application that will display its content in it, I believe he in fact
means Window handle (HWND.)

And if the external area wants to have windows for itself, he may need
to create a new window and pass its HWND.

However, it may be much more complex.

Peter Bozek
http://www.inforce.sk

**********************************************************************
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RE: How get the Area Handle ?

by Jean-François DAVID :: Rate this Message:

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Hi all,

So do you have any idea about what I need ?

I just want to put any Windows applications, into my area plugin.
For example, with the API SetParent, i can put the Visual C++ Editor into
the Notepad. To do this i just do SetParent(child Handle, Parent Handle).

So how can I get the Area PLug-in Handle ?
Is it possible ? I know that it is because I see the Ole4D Plug-in and it
does it with Windows Media Player for example.
Si I know it's possible, but i don't know how ?!!!

Bests Regars,

Cordialement,
Jean-François DAVID
Responsable Développement
Gestion d'Exploitation et Informatique Embarquée
STRADA
7 place de la gare
79300 BRESSUIRE
tél : 05 49 74 90 90 / fax : 05 49 74 90 92 / web : www.strada.fr
-----Message d'origine-----
De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de
Miloslav Bystricky
Envoyé : jeudi 23 juillet 2009 23:33
À : 4D Plugin Talk
Objet : Re: How get the Area Handle ?

On 23 Jul 2009, at 17:44, Michael Gilligan wrote:

> You can write this code as a class or as straight c code. To draw
> or write to your plugin area you need to call GetWindowDC for a
> drawing context and I imagine that that window handle is the handle
> that you are talking about. Rob is talking about the address of
> where your plugin code resides in memory.
>

Yes, I know. Jean Francois is speaking about 'area handle' so it seems
that he means the handle maintained by 4D where area can store its
data (not code), but as he wants to pass that handle to another
application that will display its content in it, I believe he in fact
means Window handle (HWND.)

And if the external area wants to have windows for itself, he may need
to create a new window and pass its HWND.

However, it may be much more complex.

Peter Bozek
http://www.inforce.sk

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***********************************************************************

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RE: How get the Area Handle ?

by Michael Gilligan :: Rate this Message:

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J-F,

My past experience tells me that messing with windows in 4D leads to trouble so I have avoided client windows, but if you want to have a go at it, this should get you started:

#include "4DPluginAPI.h"

#include "4DPlugin.h"

#include "Windows.h"

HDC hdc;

PA_WindowRef wref;

HWND hwnd;

wref=PA_GetWindowFocused();

hwnd=(HWND)PA_GetHWND((PA_WindowRef)wref);

hdc=(HDC)GetWindowDC(hwnd);

Get the 4D Plugin Kit for the header files and calls.

Good Luck!

Mike Gilligan

MedeaOne

--- On Fri, 7/24/09, Jean-François DAVID <jeanfrancois.david@...> wrote:

From: Jean-François DAVID <jeanfrancois.david@...>
Subject: RE: How get the Area Handle ?
To: "'4D Plugin Talk'" <4D-Plugins@...>
Date: Friday, July 24, 2009, 8:25 AM

Hi all,

So do you have any idea about what I need ?

I just want to put any Windows applications, into my area plugin.
For example, with the API SetParent, i can put the Visual C++ Editor into
the Notepad. To do this i just do SetParent(child Handle, Parent Handle).

So how can I get the Area PLug-in Handle ?
Is it possible ? I know that it is because I see the Ole4D Plug-in and it
does it with Windows Media Player for example.
Si I know it's possible, but i don't know how ?!!!

Bests Regars,

Cordialement,
Jean-François DAVID
Responsable Développement
Gestion d'Exploitation et Informatique Embarquée
STRADA
7 place de la gare
79300 BRESSUIRE
tél : 05 49 74 90 90 / fax : 05 49 74 90 92 / web : www.strada.fr
-----Message d'origine-----
De : 4D-Plugins@... [mailto:4D-Plugins@...] De la part de
Miloslav Bystricky
Envoyé : jeudi 23 juillet 2009 23:33
À : 4D Plugin Talk
Objet : Re: How get the Area Handle ?

On 23 Jul 2009, at 17:44, Michael Gilligan wrote:

> You can write this code as a class or as straight c code. To draw
> or write to your plugin area you need to call GetWindowDC for a
> drawing context and I imagine that that window handle is the handle
> that you are talking about. Rob is talking about the address of
> where your plugin code resides in memory.
>

Yes, I know. Jean Francois is speaking about 'area handle' so it seems
that he means the handle maintained by 4D where area can store its
data (not code), but as he wants to pass that handle to another
application that will display its content in it, I believe he in fact
means Window handle (HWND.)

And if the external area wants to have windows for itself, he may need
to create a new window and pass its HWND.

However, it may be much more complex.

Peter Bozek
http://www.inforce.sk

**********************************************************************
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***********************************************************************

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