C # - escrevendo um servidor COM - Propriedades mapeadas para métodos
Estamos tentando substituir um servidor COM originalmente escrito para um aplicativo VB6
Nós não temos acesso ao código-fonte.
Por algum motivo, o aplicativo VB6 pode chamar nosso construtor, mas depois fica:
Erro do sistema e H80004002. Nenhuma interface suportada.
Eu assumo quando ele tenta obter a interface com o QueryInterface.
Nós temos nossa assembléia enviada corretamente através de regasm / tlb e gacutil, mas eu notei algo estranho. Eu abri o regasm do arquivo .tlb gerado para o nosso assembly, e notei todas as propriedades na minha interface aparecem como métodos.
Isso é algo que as ferramentas do .net estão fazendo? E isso causaria o meu problema?
Aqui está a definição completa de tlb para o arquivo 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;
};
};
Aqui está o generate tlb para meu assembly .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 alguma forma minhas propriedades são listadas como métodos ... Mesmo se eu adicionar PreserveSig, ele ainda escreve 2 métodos em vez de torná-los propriedades.
Que mudanças devo tentar fazer com que seja idêntico ao tlb original? Ou pelo menos faça funcionar.
UPDATE: encontrado onde eu não tinha DispIdAttribute na minha interface de eventos. Corrigido isso, mas o aplicativo VB6 ainda falha com o mesmo erro.