C # - escribiendo un servidor COM - Propiedades mapeadas a métodos
Estamos tratando de reemplazar un servidor COM originalmente escrito para una aplicación VB6
No tenemos acceso al código fuente.
Por alguna razón, la aplicación VB6 puede llamar a nuestro constructor, pero luego recibe:
Error del sistema y H80004002. No hay tal interfaz compatible.
Supongo que cuando intenta obtener la interfaz con QueryInterface.
Hemos enviado correctamente nuestra asamblea a través de regasm / tlb y gacutil, pero luego noté algo extraño. Abrí el archivo .tlb regasm generado para nuestro ensamblaje y noté que todas las propiedades en mi interfaz aparecen como métodos.
¿Es esto algo que están haciendo las herramientas .Net? ¿Y esto causaría mi problema?
Aquí está la definición completa de tlb para el archivo original:
// Generated .IDL file (by the OLE/COM Object Viewer)
//
// typelib filename: UtopiaKeyboard.tlb
[
uuid(9B4E1840-FF65-11CF-AA2E-0020AFA49D5A),
version(1.0),
helpstring("OPOS POSKeyboard OLE Control")
]
library POSKEYBOARDLib
{
// TLib : // TLib : OLE Automation : {00020430-0000-0000-C000-000000000046}
importlib("STDOLE2.TLB");
// Forward declare all types defined in this typelib
dispinterface _DPOSKeyboard;
dispinterface _DPOSKeyboardEvents;
[
uuid(9B4E1841-FF65-11CF-AA2E-0020AFA49D5A),
helpstring("Dispatch interface for OPOS POSKeyboard OLE Control"),
hidden
]
dispinterface _DPOSKeyboard {
properties:
[id(0x00000001)
]
BSTR CheckHealthText;
[id(0x00000002)
]
VARIANT_BOOL Claimed;
[id(0x00000003)
]
VARIANT_BOOL DataEventEnabled;
[id(0x00000004)
]
VARIANT_BOOL DeviceEnabled;
[id(0x00000005)
]
VARIANT_BOOL FreezeEvents;
[id(0x00000006)
]
long ResultCode;
[id(0x00000007)
]
long ResultCodeExtended;
[id(0x00000008)
]
long State;
[id(0x00000009)
]
BSTR ControlObjectDescription;
[id(0x0000000a)
]
long ControlObjectVersion;
[id(0x0000000b)
]
BSTR ServiceObjectDescription;
[id(0x0000000c)
]
long ServiceObjectVersion;
[id(0x0000000d)
]
BSTR DeviceDescription;
[id(0x0000000e)
]
BSTR DeviceName;
[id(0x0000000f)
]
long POSKeyData;
[id(0x0000001a)
]
VARIANT_BOOL AutoDisable;
[id(0x0000001b)
]
long BinaryConversion;
[id(0x0000001c)
]
long DataCount;
[id(0x0000001d)
]
VARIANT_BOOL CapKeyUp;
[id(0x0000001e)
]
long EventTypes;
[id(0x0000001f)
]
long POSKeyEventType;
[id(0x00000021)
]
long CapPowerReporting;
[id(0x00000022)
]
long PowerNotify;
[id(0x00000023)
]
long PowerState;
methods:
[id(0x00000010)]
long Open([in] BSTR DeviceName);
[id(0x00000011)]
long Close();
[id(0x00000012)]
long Claim([in] long Timeout);
[id(0x00000013)]
long Release();
[id(0x00000014)]
long CheckHealth([in] long Level);
[id(0x00000015)]
long ClearInput();
[id(0x00000016)]
long DirectIO(
[in] long Command,
[in, out] long* pData,
[in, out] BSTR* pString);
[id(0x00000017)]
void SOData([in] long Status);
[id(0x00000018)]
void SODirectIO(
[in] long EventNumber,
[in, out] long* pData,
[in, out] BSTR* pString);
[id(0x00000019)]
void SOError(
[in] long ResultCode,
[in] long ResultCodeExtended,
[in] long ErrorLocus,
[in, out] long* pErrorResponse);
[id(0x00000020)]
long SOProcessID();
[id(0x00000024)]
void SOStatusUpdate([in] long Status);
};
[
uuid(9B4E1842-FF65-11CF-AA2E-0020AFA49D5A),
helpstring("Event interface for OPOS POSKeyboard OLE Control")
]
dispinterface _DPOSKeyboardEvents {
properties:
methods:
[id(0x00000001)]
void DataEvent([in] long Status);
[id(0x00000002)]
void DirectIOEvent(
[in] long EventNumber,
[in, out] long* pData,
[in, out] BSTR* pString);
[id(0x00000003)]
void ErrorEvent(
[in] long ResultCode,
[in] long ResultCodeExtended,
[in] long ErrorLocus,
[in, out] long* pErrorResponse);
[id(0x00000004)]
void StatusUpdateEvent([in] long Status);
};
[
uuid(9B4E1843-FF65-11CF-AA2E-0020AFA49D5A),
helpstring("OPOS POSKeyboard OLE Control"),
control
]
coclass POSKeyboard {
[default] dispinterface _DPOSKeyboard;
[default, source] dispinterface _DPOSKeyboardEvents;
};
};
Aquí está el tlb generado para mi ensamblado .Net:
// Generated .IDL file (by the OLE/COM Object Viewer)
//
// typelib filename: POSKEYBOARDLib.tlb
[
uuid(9B4E1840-FF65-11CF-AA2E-0020AFA49D5A),
version(1.0),
custom(90883F05-3D28-11D2-8F17-00A0C9A6186D, "POSKEYBOARDLib, Version=1.0.0.0, Culture=neutral, PublicKeyToken=5824208931aaf68b")
]
library POSKEYBOARDLib
{
// TLib : // TLib : mscorlib.dll : {BED7F4EA-1A96-11D2-8F08-00A0C9A6186D}
importlib("mscorlib.tlb");
// TLib : OLE Automation : {00020430-0000-0000-C000-000000000046}
importlib("STDOLE2.TLB");
// Forward declare all types defined in this typelib
dispinterface _DPOSKeyboard;
dispinterface _DPOSKeyboardEvents;
[
uuid(9B4E1841-FF65-11CF-AA2E-0020AFA49D5A),
version(1.0),
custom(0F21F359-AB84-41E8-9A78-36D110E6D2F9, "POSKEYBOARDLib._DPOSKeyboard")
]
dispinterface _DPOSKeyboard {
properties:
methods:
[id(0x00000001), propget]
BSTR CheckHealthText();
[id(0x00000001), propput]
void CheckHealthText([in] BSTR rhs);
[id(0x00000002), propget]
VARIANT_BOOL Claimed();
[id(0x00000002), propput]
void Claimed([in] VARIANT_BOOL rhs);
[id(0x00000003), propget]
VARIANT_BOOL DataEventEnabled();
[id(0x00000003), propput]
void DataEventEnabled([in] VARIANT_BOOL rhs);
[id(0x00000004), propget]
VARIANT_BOOL DeviceEnabled();
[id(0x00000004), propput]
void DeviceEnabled([in] VARIANT_BOOL rhs);
[id(0x00000005), propget]
VARIANT_BOOL FreezeEvents();
[id(0x00000005), propput]
void FreezeEvents([in] VARIANT_BOOL rhs);
[id(0x00000006), propget]
long ResultCode();
[id(0x00000006), propput]
void ResultCode([in] long rhs);
[id(0x00000007), propget]
long ResultCodeExtended();
[id(0x00000007), propput]
void ResultCodeExtended([in] long rhs);
[id(0x00000008), propget]
long State();
[id(0x00000008), propput]
void State([in] long rhs);
[id(0x00000009), propget]
BSTR ControlObjectDescription();
[id(0x00000009), propput]
void ControlObjectDescription([in] BSTR rhs);
[id(0x0000000a), propget]
long ControlObjectVersion();
[id(0x0000000a), propput]
void ControlObjectVersion([in] long rhs);
[id(0x0000000b), propget]
BSTR ServiceObjectDescription();
[id(0x0000000b), propput]
void ServiceObjectDescription([in] BSTR rhs);
[id(0x0000000c), propget]
long ServiceObjectVersion();
[id(0x0000000c), propput]
void ServiceObjectVersion([in] long rhs);
[id(0x0000000d), propget]
BSTR DeviceDescription();
[id(0x0000000d), propput]
void DeviceDescription([in] BSTR rhs);
[id(0x0000000e), propget]
BSTR DeviceName();
[id(0x0000000e), propput]
void DeviceName([in] BSTR rhs);
[id(0x0000000f), propget]
long POSKeyData();
[id(0x0000000f), propput]
void POSKeyData([in] long rhs);
[id(0x00000010)]
long Open([in] BSTR DeviceName);
[id(0x00000011)]
long Close();
[id(0x00000012)]
long Claim([in] long Timeout);
[id(0x00000013)]
long Release();
[id(0x00000014)]
long CheckHealth([in] long Level);
[id(0x00000015)]
long ClearInput();
[id(0x00000016)]
long DirectIO(
[in] long Command,
[in, out] long* pData,
[in, out] BSTR* pString);
[id(0x00000017)]
void SOData([in] long Status);
[id(0x00000018)]
void SODirectIO(
[in] long EventNumber,
[in, out] long* pData,
[in, out] BSTR* pString);
[id(0x00000019)]
void SOError(
[in] long ResultCode,
[in] long ResultCodeExtended,
[in] long ErrorLocus,
[in, out] long* pErrorResponse);
[id(0x0000001a), propget]
VARIANT_BOOL AutoDisable();
[id(0x0000001a), propput]
void AutoDisable([in] VARIANT_BOOL rhs);
[id(0x0000001b), propget]
long BinaryConversion();
[id(0x0000001b), propput]
void BinaryConversion([in] long rhs);
[id(0x0000001c), propget]
long DataCount();
[id(0x0000001c), propput]
void DataCount([in] long rhs);
[id(0x0000001d), propget]
VARIANT_BOOL CapKeyUp();
[id(0x0000001d), propput]
void CapKeyUp([in] VARIANT_BOOL rhs);
[id(0x0000001e), propget]
long EventTypes();
[id(0x0000001e), propput]
void EventTypes([in] long rhs);
[id(0x0000001f), propget]
long POSKeyEventType();
[id(0x0000001f), propput]
void POSKeyEventType([in] long rhs);
[id(0x00000020)]
long SOProcessID();
[id(0x00000021), propget]
long CapPowerReporting();
[id(0x00000021), propput]
void CapPowerReporting([in] long rhs);
[id(0x00000022), propget]
long PowerNotify();
[id(0x00000022), propput]
void PowerNotify([in] long rhs);
[id(0x00000023), propget]
long PowerState();
[id(0x00000023), propput]
void PowerState([in] long rhs);
[id(0x00000024)]
void SOStatusUpdate([in] long Status);
};
[
uuid(9B4E1842-FF65-11CF-AA2E-0020AFA49D5A),
version(1.0),
custom(0F21F359-AB84-41E8-9A78-36D110E6D2F9, "POSKEYBOARDLib._DPOSKeyboardEvents")
]
dispinterface _DPOSKeyboardEvents {
properties:
methods:
[id(0x00000001)]
void DataEvent([in] long Status);
[id(0x00000002)]
void DirectIOEvent(
[in] long EventNumber,
[in, out] long* pData,
[in, out] BSTR* pString);
[id(0x00000003)]
void ErrorEvent(
[in] long ResultCode,
[in] long ResultCodeExtended,
[in] long ErrorLocus,
[in, out] long* pErrorResponse);
[id(0x00000004)]
void StatusUpdateEvent([in] long Status);
};
[
uuid(9B4E1843-FF65-11CF-AA2E-0020AFA49D5A),
version(1.0),
custom(0F21F359-AB84-41E8-9A78-36D110E6D2F9, "POSKEYBOARDLib.POSKeyboard")
]
coclass POSKeyboard {
interface _Object;
[default] dispinterface _DPOSKeyboard;
[default, source] dispinterface _DPOSKeyboardEvents;
};
};
De alguna manera, mis propiedades se enumeran como métodos ... Incluso si agrego PreserveSig, aún escribe 2 métodos en lugar de convertirlos en propiedades.
¿Qué cambios debo tratar de hacer que sea idéntico al tlb original? O al menos haz que funcione.
ACTUALIZACIÓN: Encontrado donde no tenía DispIdAttribute en mi interfaz de eventos. Se corrigió eso, pero la aplicación VB6 todavía falla con el mismo error.