pointer passing between c# dlls and cpp dlls.

[Ashish Shete]

Hi,

I have 2 cpp dlls say ACPP.dll and BCPP.dll.
ACPP.dll have following class,

class A
{
public:
    A(){};
    int BlahBlah(){};
};

BCPP.dll has following class,
#include "A.h"
class B
{
    A * Arabic;
public:
    B(A * ar)
    {
        Arabic = ar;
    };
    void MakeMyDay()
    {
        Arabic->BlahBlah();
    }
};

as you can see BCPP.dll is dependent on ACPP.dll.

Now the problem:
I need these two as separate c# dlls in a c# application. I am using SWIG to do this,
I wrap headers for A, and form a ACSharp.dll. Wrapping B should Ideally generate BCsharp.dll. But to wrap B I need to define some typemaps in my .i file for B, in order to let SWIG know that B is dependent upon a class A which is in some other dll.
How can I set the typemap? Please note that I need pointer passing between two C# dlls and C# to cpp dll.
I have done some experimenting with Typemaps. It successfully genearates two separate c# dlls, but when I try to pass c# object of A into constructor of c# object of B, the application crashes. Could anybody please help me to fix this?

Thanks,

Ashish



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[wsfulton]

Ashish Shete wrote:

> Hi,
>
> I have 2 cpp dlls say ACPP.dll and BCPP.dll.
> ACPP.dll have following class,
>
> class A
> {
> public:
>     A(){};
>     int BlahBlah(){};
> };
>
> BCPP.dll has following class,
> #include "A.h"
> class B
> {
>     A * Arabic;
> public:
>     B(A * ar)
>     {
>         Arabic = ar;
>     };
>     void MakeMyDay()
>     {
>         Arabic->BlahBlah();
>     }
> };
>
> as you can see BCPP.dll is dependent on ACPP.dll.
>
> Now the problem:
> I need these two as separate c# dlls in a c# application. I am using
> SWIG to do this,
> I wrap headers for A, and form a ACSharp.dll. Wrapping B should Ideally
> generate BCsharp.dll. But to wrap B I need to define some typemaps in my
> .i file for B, in order to let SWIG know that B is dependent upon a
> class A which is in some other dll.
> How can I set the typemap? Please note that I need pointer passing
> between two C# dlls and C# to cpp dll.
> I have done some experimenting with Typemaps. It successfully genearates
> two separate c# dlls, but when I try to pass c# object of A into
> constructor of c# object of B, the application crashes. Could anybody
> please help me to fix this?
>

Are you using %import which is meant for multiple modules?. The manual
has information, but you might also want to look at the
Examples/test-suite/imports* files and associated runtime test in
Examples/test-suite/csharp/imports_runme.cs.


William

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[Ashish Shete]

Hi William,

%import directive really helped in this case.

Thanks,

Ashish.
William S Fulton wrote:

Ashish Shete wrote:
  

Hi,

I have 2 cpp dlls say ACPP.dll and BCPP.dll.
ACPP.dll have following class,

class A
{
public:
    A(){};
    int BlahBlah(){};
};

BCPP.dll has following class,
#include "A.h"
class B
{
    A * Arabic;
public:
    B(A * ar)
    {
        Arabic = ar;
    };
    void MakeMyDay()
    {
        Arabic->BlahBlah();
    }
};

as you can see BCPP.dll is dependent on ACPP.dll.

Now the problem:
I need these two as separate c# dlls in a c# application. I am using
SWIG to do this,
I wrap headers for A, and form a ACSharp.dll. Wrapping B should Ideally
generate BCsharp.dll. But to wrap B I need to define some typemaps in my
.i file for B, in order to let SWIG know that B is dependent upon a
class A which is in some other dll.
How can I set the typemap? Please note that I need pointer passing
between two C# dlls and C# to cpp dll.
I have done some experimenting with Typemaps. It successfully genearates
two separate c# dlls, but when I try to pass c# object of A into
constructor of c# object of B, the application crashes. Could anybody
please help me to fix this?

    

Are you using %import which is meant for multiple modules?. The manual 
has information, but you might also want to look at the 
Examples/test-suite/imports* files and associated runtime test in 
Examples/test-suite/csharp/imports_runme.cs.


William

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