Re: [Swig-user] PInvoke signature does not match .cs file

[William S F. <ws...@fu...>]

patrickinminneapolis wrote:
> I have a compiled stub DLL which mostly works fine :) but some of my .cs
> functions don't actually match the Pinvoke signature so I get a compiler
> error.  In this class, swigCPtr is cast as a IntPtr which is passed into a
> Pinvoke signature which is expecting a HandleRef. Thanks for your thoughts. 
> 
> cannot convert from System.IntPtr to
> System.Runtime.InteropServices.HandleRef	
> 
> .h
> void 	setCacheSize (signed int numBytes)
> 
> .i
> %module stub
> #pragma SWIG nowarn=SWIGWARN_PARSE_NESTED_CLASS
> %nodefaultctor;
> %nodefaultdtor;
> %include "cpointer.i"
> %include "PrimateTypemaps.i"
> %include "wchar.i"
> %include "std_wstring.i"
> %{
> #include "DatabaseConfig.h"
> %}
> 
> namespace mapcore
> {
> class DatabaseConfig
> {
> public:
> mapcore::DatabaseConfig (const mapcore::String
> &databasePath=mapcore::String(), const mapcore::String
> &mapMetaDataPath=mapcore::String());
> void setCacheSize (signed int numBytes);
> };
> };
> 
> stubPINVOKE.cs
> [DllImport("stub", EntryPoint="CSharp_DatabaseConfig_setCacheSize")]
> public static extern void DatabaseConfig_setCacheSize(HandleRef jarg1, int
> jarg2);
> 
> DatabaseConfig.cs
> public class DatabaseConfig : IDisposable {
>   private IntPtr swigCPtr;
The line above indicates you are using a rather old version of SWIG or 
you have your own custom csbody typemaps. I suggest you change this in 
the csbody typemap so that swigCPtr is a HandleRef rather than IntPtr.

William