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Calling .NET methods from FTN95 with enums

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Ade

Joined: 20 Jul 2010
Posts: 6

Posted: Thu Sep 16, 2010 5:01 pm Post subject: Calling .NET methods from FTN95 with enums

The code below gives error 1119 - No .NET method matches this call.

Code:

SUBROUTINE TESTIT(MDL)
C
LIBRARY("MTSL.Data.dll")
ASSEMBLY_EXTERNAL(NAME="MTSL.Data.Model.Count") MODELCOUNT
C
OBJECT("MTSL.Data.Model") MDL
CHARACTER(LEN=24),PARAMETER::OBJECTTYPE="MTSL.Data.MTSLObjectType"
C
INTEGER*4 NUM
C
NUM = MODELCOUNT(MDL, OBJECTTYPE%otPoint)
C
WRITE(*,*) NUM
C
RETURN
END

MTSL.Data.dll was written with C#. The class 'Model' has a method 'Count' that takes an enum as a parameter to return the number of items of that type. An instance of a 'Model' is passed to the FTN95 routine.
_________________
Adrian Paveling
Systems Developer
McCarthy Taylor Systems Ltd

www.dtmsoftware.com

silverfrost
Site Admin

Joined: 29 Nov 2006
Posts: 193
Location: Manchester

Posted: Mon Oct 04, 2010 2:38 pm Post subject:

I am assuming here that otPoint is an enum value? How is it declared (jn the C#)?

Ade

Joined: 20 Jul 2010
Posts: 6

Posted: Fri Oct 08, 2010 10:40 am Post subject:

C# declaration of enum MTSLObjectType in MTSL.Data.dll -

Code:

/// <summary>
/// An enumeration to identify MTSL object types.
/// </summary>
public enum MTSLObjectType
{
   otDataObject,
   otAttribObject,
   otRefObject,
   otAttribRefObject,

   // Main data types...

   otStation,
   otSetup,
   otObservation,
   otControl,
   otPoint,
   otTriangle,
   otLink,
   otText,

   // Main survey types...

   otModel,

   // Add new types below...

   otNonTerrainNode,
   otLoadFile,
   otPointCode,
   otLinkCode,
   otSurfaceCode,
   otLegend,
   otModelDisplay
}

Declaration of Method Model.Count in MTSL.Data.dll -

Code:

/// <summary>
/// Summary description for ModelClass.
/// </summary>
public class Model : MTSLAttributeDataObject
{
...
...
public int Count(MTSLObjectType ObjectType)
{
ArrayList arr = GetList(ObjectType);
if (arr == null) return 0;

return arr.Count;
}

public ArrayList GetList(MTSLObjectType ObjectType)
{
switch (ObjectType)
{
case MTSLObjectType.otStation: return (ArrayList)FData[2];
case MTSLObjectType.otSetup: return (ArrayList)FData[3];
case MTSLObjectType.otControl: return (ArrayList)FData[4];
case MTSLObjectType.otObservation: return (ArrayList)FData[5];
case MTSLObjectType.otPoint: return (ArrayList)FData[6];
case MTSLObjectType.otLink: return (ArrayList)FData[7];
case MTSLObjectType.otTriangle: return (ArrayList)FData[8];
case MTSLObjectType.otText: return (ArrayList)FData[9];
case MTSLObjectType.otNonTerrainNode: return (ArrayList)FData[16];
case MTSLObjectType.otLoadFile: return (ArrayList)FData[17];

default: return null;
}
}
...
...
}

_________________
Adrian Paveling
Systems Developer
McCarthy Taylor Systems Ltd

www.dtmsoftware.com

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