Another c header conversion. Please help !

[Andre Azevedo]

Hi all,

I'm trying to convert a long c header file with a lot of structs to c# and
I'm getting the following error:

An unhandled exception of type 'System.TypeLoadException' occurred in
Unknown Module.
Additional information: Could not load type
......because it contains an object field at offset 0 that is incorrectly
aligned or overlapped by a non-object field.

There's a lot of others structs but it's very similar with the following
ones. Any help to convert in C# be apreciated !

TIA,

--
Andre

-------------------------------------------------------
// Win32 Specific definitions for Windows/NT 3.5
#pragma pack(8)
typedef unsigned long Handle_t;
typedef unsigned char Boolean;
#define _Int int

typedef unsigned long InvokeID_t;
typedef char DeviceID_t[64];
typedef long RoutingCrossRefID_t;
typedef long RouteRegisterReqID_t;

typedef struct
{

InvokeID_t invokeID;
union
{
CSTARouteRequestEvent_t routeRequest;
CSTARouteRequestExtEvent_t routeRequestExt;
CSTAReRouteRequest_t reRouteRequest;
CSTAEscapeSvcReqEvent_t escapeSvcReqeust;
CSTASysStatReqEvent_t sysStatRequest;
} u;

} CSTARequestEvent;

typedef struct CSTARouteRequestEvent_t {
RouteRegisterReqID_t routeRegisterReqID;
RoutingCrossRefID_t routingCrossRefID;
DeviceID_t currentRoute;
DeviceID_t callingDevice;
ConnectionID_t routedCall;
SelectValue_t routedSelAlgorithm;
Boolean priority;
SetUpValues_t setupInformation;
} CSTARouteRequestEvent_t;

typedef struct ConnectionID_t {
long callID;
DeviceID_t deviceID;
ConnectionID_Device_t devIDType;
} ConnectionID_t;

typedef struct Connection_t {
ConnectionID_t party;
SubjectDeviceID_t staticDevice;
} Connection_t;

typedef struct ConnectionList_t {
_Int count;
Connection_t FAR *connection;
} ConnectionList_t;
--------------------------------------------------

 

[Guest]

Hi,

Can you post one struct example?

 

[Andre Azevedo]

Here it is. I deleted the C header to compact the post.

-----------------------------------------------------------
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi, Pack=8)]
public struct cstaRequestEvent
{
public uint invokeId;
public cstaRequestEventDescription requestEventDescription;
}

[StructLayout(LayoutKind.Explicit, CharSet=CharSet.Ansi, Pack=8)]
public struct cstaRequestEventDescription
{
[FieldOffset(0)] public cstaRouteRequestEvent cstaRouteRequest;
[FieldOffset(0)] public cstaRouteRequestExtEvent cstaRouteRequestExt;
[FieldOffset(0)] public cstaReRouteRequestType cstaReRouteRequest;
[FieldOffset(0)] public cstaEscapeSvcReqEvent cstaEscapeSvcReq;
[FieldOffset(0)] public cstaSysStatReqEvent cstaSysStatReq;
}

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi, Pack=8 )]
public struct cstaRouteRequestEvent
{
public int routeRegisterReqID;
public int routingCrossRefID;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=64)]
public string currentRoute;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=64)]
public string callingDevice;
public ConnectionID routedCall;
public SelectValue routedSelAlgorithm;
[MarshalAs(UnmanagedType.Bool)]
public bool priority;
public SetUpValues setupInformation;
}

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi, Pack=8 )]
public struct ConnectionID
{
public uint callID;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=64)]
public string deviceID;
public ConnectionID_Device devIDType;
}

[StructLayout(LayoutKind.Sequential )]
public struct ConnectionList
{
public int count;
//public System.IntPtr PConnection; // Pointer to Connection -------->
Is this right ?
}