Interop problem (.NET 2.0)

[Ada Byron]

Hello,

I need to load in my C# .nET 2.0 application an dll (not COM)written in
Delphi. The dll has a function which returns a pointer to an IModule
interface defined in that dll.
How do I declare my delegate and call the unmanaged function?

I did something like that;

//here unsure if this should be the signature ??

internal delegate MyDelg (out IntPtr IModule);

IntPtr hModule = LoadLibrary("my dll.dll");
//if the handle is valid try to call members
if (hModule != IntPtr.Zero)
{
//get the function pointer
IntPtr fptr = GetProcAddres(h Module, "GetInterface") ;
if (fptr != IntPtr.Zero)
{
MyDelg mgi = Marshal.GetDele gateForFunction Pointer(fptr,
typeof(MyDelg)) ;

//here unsure ??
IntPtr ptrModuleInterf ace;
mgi(out ptrModuleInterf ace);
}
FreeLibrary(hMo dule);

Please help me to figure out the proper way to invoke that unmanged
function.

Thank you


Ada@yahoo.com

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[Willy Denoyette [MVP]]

Re: Interop problem (.NET 2.0)

And what is this IModule pointer pointing to? You can't call Interfaces, you
can only call functions.

Willy.


"Ada Byron" <gabriela_popa@ yahoo.com> wrote in message
news:%23SYULg3R GHA.2300@TK2MSF TNGP11.phx.gbl. ..
| Hello,
|
| I need to load in my C# .nET 2.0 application an dll (not COM)written in
| Delphi. The dll has a function which returns a pointer to an IModule
| interface defined in that dll.
| How do I declare my delegate and call the unmanaged function?
|
| I did something like that;
|
| //here unsure if this should be the signature ??
|
| internal delegate MyDelg (out IntPtr IModule);
|
| IntPtr hModule = LoadLibrary("my dll.dll");
| //if the handle is valid try to call members
| if (hModule != IntPtr.Zero)
| {
| //get the function pointer
| IntPtr fptr = GetProcAddres(h Module, "GetInterface") ;
| if (fptr != IntPtr.Zero)
| {
| MyDelg mgi = Marshal.GetDele gateForFunction Pointer(fptr,
| typeof(MyDelg)) ;
|
| //here unsure ??
| IntPtr ptrModuleInterf ace;
| mgi(out ptrModuleInterf ace);
| }
| FreeLibrary(hMo dule);
|
| Please help me to figure out the proper way to invoke that unmanged
| function.
|
| Thank you
|
|
| Ada@yahoo.com
|
| *** Sent via Developersdex http://www.developersdex.com ***