using a .Net Control as activex control in VCL form
Hi , We have a to integrate a simple .Dot CSharp control which needs to be integrated into bcb2010 VCL form as a control. We will place the control on the VCL form along with other VCL controls's. I tried creating a simple .net control using a lable+textbox and trying to use in vcl form. I have made the assembly comvisible and generated tlb files and .bpl for the component. I could see the component in "ActiveX" tool palette. But when I drag the object onto VCL form and try to access its attributes I run into problems. I am not able to see .net control on the vcl at runtime. I am not sure that is that I am missing. I have no clue. Could any one please tell me how to make this happen? regards srinivas
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srinivas
2/9/2011 6:39:00 AM
embarcadero.cppbuilder.activex
257 articles. 
0 followers.
6 Replies
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Hello, srinivas revanur wrote: > I tried creating a simple .net control using a lable+textbox and > trying to use in vcl form. I have made the assembly comvisible and > generated tlb files and .bpl for the component. I could see the > component in "ActiveX" tool palette. But when I drag the object onto > VCL form and try to access its attributes I run into problems. I am > not able to see .net control on the vcl at runtime. could you be more clear about the problems you're running into? I just tried importing the WinForms 2.0 object library (using Delphi), and apart from a few naming problems I could use the WinForms components just fine, both at compile time and at runtime. -- "Hey, it compiles! Ship it!"
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Moritz
2/9/2011 3:37:28 PM
<srinivas revanur> wrote in message news:325716@forums.embarcadero.com... > But when I drag the object onto VCL form and try to > access its attributes I run into problems. Such as? Please be more specific. -- Remy Lebeau (TeamB)
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Remy
2/9/2011 5:33:33 PM
> {quote:title=Remy Lebeau (TeamB) wrote:}{quote}
> <srinivas revanur> wrote in message news:325716@forums.embarcadero.com...
>
> > But when I drag the object onto VCL form and try to
> > access its attributes I run into problems.
>
> Such as? Please be more specific.
>
> --
> Remy Lebeau (TeamB)
I am not able to see the methods which I have exposed. Also I am not able to see the component at runtime on the form. I don't know how can create a activex control dynamically and place it on the form so that it is visible at runtime and I should be able to change the position on the form.
The same .net component is running on a MFC DIALOG application. I could see the .net text box at runtime and I could even the type the text and the MFC dialog receives the events from .Net. I need to do same in C++ builder.
Help is really required.
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srinivas
2/10/2011 4:26:09 AM
Srinivas
I have sent you details in the support case that was logged, regarding this it is relatively easy to get it working and I have it working in both CB2010 and CBXE. Have received those details?
brgds
Roy.
> {quote:title=srinivas revanur wrote:}{quote}
> > {quote:title=Remy Lebeau (TeamB) wrote:}{quote}
> > <srinivas revanur> wrote in message news:325716@forums.embarcadero.com...
> >
> > > But when I drag the object onto VCL form and try to
> > > access its attributes I run into problems.
> >
> > Such as? Please be more specific.
> >
> > --
> > Remy Lebeau (TeamB)
>
> I am not able to see the methods which I have exposed. Also I am not able to see the component at runtime on the form. I don't know how can create a activex control dynamically and place it on the form so that it is visible at runtime and I should be able to change the position on the form.
>
> The same .net component is running on a MFC DIALOG application. I could see the .net text box at runtime and I could even the type the text and the MFC dialog receives the events from .Net. I need to do same in C++ builder.
>
> Help is really required.
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Ray
2/16/2011 10:30:28 AM
> {quote:title=Ray Vecchio wrote:}{quote}
> Srinivas
>
> I have sent you details in the support case that was logged, regarding this it is relatively easy to get it working and I have it working in both CB2010 and CBXE. Have received those details?
>
> brgds
>
> Roy.
>
> > {quote:title=srinivas revanur wrote:}{quote}
> > > {quote:title=Remy Lebeau (TeamB) wrote:}{quote}
> > > <srinivas revanur> wrote in message news:325716@forums.embarcadero.com...
> > >
> > > > But when I drag the object onto VCL form and try to
> > > > access its attributes I run into problems.
> > >
> > > Such as? Please be more specific.
> > >
> > > --
> > > Remy Lebeau (TeamB)
> >
> > I am not able to see the methods which I have exposed. Also I am not able to see the component at runtime on the form. I don't know how can create a activex control dynamically and place it on the form so that it is visible at runtime and I should be able to change the position on the form.
> >
> > The same .net component is running on a MFC DIALOG application. I could see the .net text box at runtime and I could even the type the text and the MFC dialog receives the events from .Net. I need to do same in C++ builder.
> >
> > Help is really required.
Hi,
Thanks for the hint and now I am able to use the .net UI control in VCL. I am also able to invoke methods on the .net control.
Now I have another issue. I am trying to handle the events in C++ builder which are raised from .Net control. This is not working. I have put a message in the routine in c++, but it is not invoked from .Net.
Let me explain here...with code snippet from .net component, vcl wrappers, and my client code,
CSHARP .net component
namespace ap2008
{
[ComVisible(true)]
[Guid("8C629BD8-6DE3-4d0b-BF9A-72F32C593FB3")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface IMyEvents
{
[DispId(1)]
void zoomed(string sname);
}
public delegate void ZoomedDelegate();
[ComVisible(true)]
[Guid("01F4CC21-E3BB-4fba-A066-A00008C6AE92")]
[ClassInterface(ClassInterfaceType.None)]
[ComSourceInterfaces(typeof(IMyEvents))]
public partial class ap2008 : UserControl, ..
{
public event ZoomedDelegate zoomDelegate;
..
public my func(){
..
ZoomeDelegate("test");
}
.....
at C++ builder 2010 side generated files has the below code,
typedef void __fastcall (__closure * Tap2008_Zoomed)(System::TObject * Sender,
BSTR rname/*[in]*/);
__property Tap2008_Zoomed OnZoomed={ read=FOnZoomed, write=FOnZoomed };
In my client code,
unit1.h ->
void __fastcall Zoomed( TObject * Sender, BSTR rname);
unit1.cpp->
void __fastcall TForm1::FormShow(TObject *Sender)
{
gmap2008_1->OnZoomed = this->Zoomed;
}
void __fastcall TForm1::Zoomed(TObject* Sender, BSTR rname)
{
ShowMessage("event from .Net"); /// ..............>>>>>>>>>>>>> I EXPECT THIS MSG should be shown.
}
//---------------------------------------------------------------------------
I tried with another example with MFC activex control and c++ builder client. even in that I have faced the same problem. what is missing here???
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srinivas
4/18/2011 2:48:06 PM
> {quote:title=Ray Vecchio wrote:}{quote}
> Srinivas
>
> I have sent you details in the support case that was logged, regarding this it is relatively easy to get it working and I have it working in both CB2010 and CBXE. Have received those details?
>
> brgds
>
> Roy.
>
Could someone post a link to this support case or post details on how to get this working? Thanks!
Tony
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Tony
7/7/2011 7:19:01 AM
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