Function pointers in EXTENSION_CONTROL_BLOCK are IntPtr in the metadata

[ChrisDenton]

See EXTENSION_CONTROL_BLOCK. The abbreviated C definition is:

typedef struct _EXTENSION_CONTROL_BLOCK EXTENSION_CONTROL_BLOCK {
      ...
      BOOL (WINAPI * GetServerVariable) ();
      BOOL (WINAPI * WriteClient) ();
      BOOL (WINAPI * ReadClient) ();
      BOOL (WINAPI * ServerSupportFunction) ();
} EXTENSION_CONTROL_BLOCK;

But in the metadata it's:

public struct EXTENSION_CONTROL_BLOCK
{
      ...
      public IntPtr GetServerVariable;
      public IntPtr WriteClient;
      public IntPtr ReadClient;
      public IntPtr ServerSupportFunction;
}

[mikebattista]

The emitted C# contains more information in the NativeTypeName attribute that isn't represented in the winmd.

[NativeTypeName("BOOL (*)(HCONN, LPSTR, LPVOID, LPDWORD) __attribute__((stdcall))")]        public IntPtr GetServerVariable;
[NativeTypeName("BOOL (*)(HCONN, LPVOID, LPDWORD, DWORD) __attribute__((stdcall))")]        public IntPtr WriteClient;
[NativeTypeName("BOOL (*)(HCONN, LPVOID, LPDWORD) __attribute__((stdcall))")]        public IntPtr ReadClient;
[NativeTypeName("BOOL (*)(HCONN, DWORD, LPVOID, LPDWORD, LPDWORD) __attribute__((stdcall))")]        public IntPtr ServerSupportFunction;

#1006 tracks another issue where NativeTypeName context in the generated C# isn't being translated to the winmd.