MFC, How to pass UDTs(User Defined Type Array)

???F
#1 / 4

How to pass UDTs(User Defined Type Array)

I know the rules for passing UDTs between component and client.

In IDL:
1. the user defined struct as follow:
typedef [ uuid( FB42007A-4D9F-4395-8E4C-8874CA9B9547 ),
helpstring("Component Information Struct") ]
struct _COMPONENT_INFO{
[string] char *pstrAuthor;
short sMajor;
short sMinor;
BSTR bstrName;
}COMPONENT_INFO;

2. the interface which use the UDT:
[
object,
helpstring(...),
dual,
pointer_default(unique)
]
Interface ...
{
[id(...)][helpstring(...)]...([out]?11??)

3. at server side to create the UDTs

// { FB42007A-4D9F-4395-8E4C-8874CA9B9547 }
DEFINE_GUID( GUID_Struct,
0xfb42007a, 0x4d9f, 0x4395, 0x8e, 0x4c, 0x88, 0x74, 0xca, 0x9b, 0x95, 0x47);

ITypeLib* pTypelib;
ITypeInfo* pTypeInfo=NULL;
IRecordInfo* pRecordInfo=NULL;

hr = LoadRegTypeLib(LIBID_CHAPTER4_SERVERLib, 1, 0, GetUserDefaultLCID(),
&pTypelib); // ok
hr = pTypelib->GetTypeInfoOfGuid( GUID_Struct, &pTypeInfo );
// get error why

_ASSERT(SUCCEEDED(hr) && pTypeInfo);
hr = GetRecordInfoFromTypeInfo(pTypeInfo, &pRecordInfo);
_ASSERT(SUCCEEDED(hr) && pRecordInfo);

pTypeInfo->Release();
pTypelib->Release();

rgsabound[0].lLbound = 0;
rgsabound[0].cElements = nSize;

psaArray = SafeArrayCreateEx( VT_RECORD, 1, rgsabound, pRecordInfo );

Who can help me???

--
OICQ: 329170 ( ?D?3D? )
ICQ : 37175293 ( ?? )
??3: http://www.*-*-*.com/ c/c++

Sun, 23 Nov 2003 06:25:54 GMT

Alexander Nickolo
#2 / 4

How to pass UDTs(User Defined Type Array)

As a first step - make your UDT Automation-compatible:

typedef [ uuid( FB42007A-4D9F-4395-8E4C-8874CA9B9547 ),
helpstring("Component Information Struct") ]
struct COMPONENT_INFO {
BSTR bstrAuthor;
short sMajor;
short sMinor;
BSTR bstrName;

Quote:

} COMPONENT_INFO;

In IDL:

SAFEARRAY(struct COMPONENT_INFO)* psa

In code:

hr = GetRecordInfoFromGuids(...);

Also, see item 4 in the COM/ATL FAQ in my signature.

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD

MVP VC FAQ: http://www.mvps.org/vcfaq
=====================================

Quote:

> I know the rules for passing UDTs between component and client.

> In IDL:
> 1. the user defined struct as follow:
> typedef [ uuid( FB42007A-4D9F-4395-8E4C-8874CA9B9547 ),
> helpstring("Component Information Struct") ]
> struct _COMPONENT_INFO{
> [string] char *pstrAuthor;
> short sMajor;
> short sMinor;
> BSTR bstrName;
> }COMPONENT_INFO;

> 2. the interface which use the UDT:
> [
> object,
> helpstring(...),
> dual,
> pointer_default(unique)
> ]
> Interface ...
> {
> [id(...)][helpstring(...)]...([out]?11??)

> 3. at server side to create the UDTs

> // { FB42007A-4D9F-4395-8E4C-8874CA9B9547 }
> DEFINE_GUID( GUID_Struct,
> 0xfb42007a, 0x4d9f, 0x4395, 0x8e, 0x4c, 0x88, 0x74, 0xca, 0x9b, 0x95,
0x47);

> ITypeLib* pTypelib;
> ITypeInfo* pTypeInfo=NULL;
> IRecordInfo* pRecordInfo=NULL;

> hr = LoadRegTypeLib(LIBID_CHAPTER4_SERVERLib, 1, 0, GetUserDefaultLCID(),
> &pTypelib); // ok
> hr = pTypelib->GetTypeInfoOfGuid( GUID_Struct, &pTypeInfo );
> // get error why

> _ASSERT(SUCCEEDED(hr) && pTypeInfo);
> hr = GetRecordInfoFromTypeInfo(pTypeInfo, &pRecordInfo);
> _ASSERT(SUCCEEDED(hr) && pRecordInfo);

> pTypeInfo->Release();
> pTypelib->Release();

> rgsabound[0].lLbound = 0;
> rgsabound[0].cElements = nSize;

> psaArray = SafeArrayCreateEx( VT_RECORD, 1, rgsabound, pRecordInfo );

> Who can help me???

> --
> OICQ: 329170 ( ?D?3D? )
> ICQ : 37175293 ( ?? )
> ??3: http://www.ccw.com.cn c/c++

Mon, 24 Nov 2003 08:25:28 GMT

???F
#3 / 4

How to pass UDTs(User Defined Type Array)

The biggest problem is it returns error that tells me can't find the object,
here is the idl:

//IComponentInfo
typedef [uuid( 57B92B3C-91A2-48f5-861D-C6C125EAC867 ), helpstring(
"IComponent's Component Info Struct" ) ]
struct _COMPONENT_INFO{
[string] char *pstrAuthor;
short sMajor;
short sMinor;
BSTR bstrName;
}COMPONENT_INFO;

[
object,
uuid(02753E92-9CD5-4bff-A0EE-9FF967CBD467),
helpstring("IComponentInfo Interface"),
dual,
pointer_default(unique)
]
interface IComponentInfo:IDispatch
{
[id(1),helpstring("method get_Info")] HRESULT get_Info( [in]UINT nSize,
[out, retval]VARIANT* pv );
[id(2),helpstring("method get_Name")] HRESULT get_Name( [out, retval]BSTR*
bstrName );
[propget, id(3), helpstring("property ComponentInfo")] HRESULT
ComponentInfo([out, retval] COMPONENT_INFO *pVal);
};

[
uuid(65F273FB-C6B9-42DD-B9FE-A3C43FE205F9),
version(1.0),
helpstring("Chapter4_Server 1.0 Type Library")
]
library CHAPTER4_SERVERLib
{
importlib("stdole32.tlb");
importlib("stdole2.tlb");

[
uuid(EB49A0EB-884A-4DB6-BD0B-278981F902B5),
helpstring("Math Class")
]
coclass Math
{
[default] interface IMath;
interface IComponentInfo;
interface IAdvancedMath;
interface IMath2;
};
};

--
OICQ: 329170 ( ?D?3D? )
ICQ : 37175293 ( ?? )
??3: http://www.ccw.com.cn c/c++

Quote:

> As a first step - make your UDT Automation-compatible:

> typedef [ uuid( FB42007A-4D9F-4395-8E4C-8874CA9B9547 ),
> helpstring("Component Information Struct") ]
> struct COMPONENT_INFO {
> BSTR bstrAuthor;
> short sMajor;
> short sMinor;
> BSTR bstrName;
> } COMPONENT_INFO;

> In IDL:

> SAFEARRAY(struct COMPONENT_INFO)* psa

> In code:

> hr = GetRecordInfoFromGuids(...);

> Also, see item 4 in the COM/ATL FAQ in my signature.

> --
> =====================================
> Alexander Nickolov
> Microsoft MVP [VC], MCSD

> MVP VC FAQ: http://www.mvps.org/vcfaq
> =====================================

> > I know the rules for passing UDTs between component and client.

> > In IDL:
> > 1. the user defined struct as follow:
> > typedef [ uuid( FB42007A-4D9F-4395-8E4C-8874CA9B9547 ),
> > helpstring("Component Information Struct") ]
> > struct _COMPONENT_INFO{
> > [string] char *pstrAuthor;
> > short sMajor;
> > short sMinor;
> > BSTR bstrName;
> > }COMPONENT_INFO;

> > 2. the interface which use the UDT:
> > [
> > object,
> > helpstring(...),
> > dual,
> > pointer_default(unique)
> > ]
> > Interface ...
> > {
> > [id(...)][helpstring(...)]...([out]?11??)

> > 3. at server side to create the UDTs

> > // { FB42007A-4D9F-4395-8E4C-8874CA9B9547 }
> > DEFINE_GUID( GUID_Struct,
> > 0xfb42007a, 0x4d9f, 0x4395, 0x8e, 0x4c, 0x88, 0x74, 0xca, 0x9b, 0x95,
> 0x47);

> > ITypeLib* pTypelib;
> > ITypeInfo* pTypeInfo=NULL;
> > IRecordInfo* pRecordInfo=NULL;

> > hr = LoadRegTypeLib(LIBID_CHAPTER4_SERVERLib, 1, 0,

GetUserDefaultLCID(),

- Show quoted text -

Quote:

> > &pTypelib); // ok
> > hr = pTypelib->GetTypeInfoOfGuid( GUID_Struct, &pTypeInfo );
> > // get error why

> > _ASSERT(SUCCEEDED(hr) && pTypeInfo);
> > hr = GetRecordInfoFromTypeInfo(pTypeInfo, &pRecordInfo);
> > _ASSERT(SUCCEEDED(hr) && pRecordInfo);

> > pTypeInfo->Release();
> > pTypelib->Release();

> > rgsabound[0].lLbound = 0;
> > rgsabound[0].cElements = nSize;

> > psaArray = SafeArrayCreateEx( VT_RECORD, 1, rgsabound, pRecordInfo );

> > Who can help me???

> > --
> > OICQ: 329170 ( ?D?3D? )
> > ICQ : 37175293 ( ?? )
> > ??3: http://www.ccw.com.cn c/c++

Tue, 25 Nov 2003 05:51:11 GMT

Alexander Nickolo
#4 / 4

How to pass UDTs(User Defined Type Array)

Do you get a warning from MIDL that it is not Automation-compatible?
You have to make it disappear first... Hint - UINT is a _very_ new
Automation type - better use long instead.

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD

MVP VC FAQ: http://www.mvps.org/vcfaq
=====================================

Quote:

> The biggest problem is it returns error that tells me can't find the
object,
> here is the idl:

> //IComponentInfo
> typedef [uuid( 57B92B3C-91A2-48f5-861D-C6C125EAC867 ), helpstring(
> "IComponent's Component Info Struct" ) ]
> struct _COMPONENT_INFO{
> [string] char *pstrAuthor;
> short sMajor;
> short sMinor;
> BSTR bstrName;
> }COMPONENT_INFO;

> [
> object,
> uuid(02753E92-9CD5-4bff-A0EE-9FF967CBD467),
> helpstring("IComponentInfo Interface"),
> dual,
> pointer_default(unique)
> ]
> interface IComponentInfo:IDispatch
> {
> [id(1),helpstring("method get_Info")] HRESULT get_Info( [in]UINT nSize,
> [out, retval]VARIANT* pv );
> [id(2),helpstring("method get_Name")] HRESULT get_Name( [out,
retval]BSTR*
> bstrName );
> [propget, id(3), helpstring("property ComponentInfo")] HRESULT
> ComponentInfo([out, retval] COMPONENT_INFO *pVal);
> };

> [
> uuid(65F273FB-C6B9-42DD-B9FE-A3C43FE205F9),
> version(1.0),
> helpstring("Chapter4_Server 1.0 Type Library")
> ]
> library CHAPTER4_SERVERLib
> {
> importlib("stdole32.tlb");
> importlib("stdole2.tlb");

> [
> uuid(EB49A0EB-884A-4DB6-BD0B-278981F902B5),
> helpstring("Math Class")
> ]
> coclass Math
> {
> [default] interface IMath;
> interface IComponentInfo;
> interface IAdvancedMath;
> interface IMath2;
> };
> };

> --
> OICQ: 329170 ( ?D?3D? )
> ICQ : 37175293 ( ?? )
> ??3: http://www.ccw.com.cn c/c++

> > As a first step - make your UDT Automation-compatible:

> > typedef [ uuid( FB42007A-4D9F-4395-8E4C-8874CA9B9547 ),
> > helpstring("Component Information Struct") ]
> > struct COMPONENT_INFO {
> > BSTR bstrAuthor;
> > short sMajor;
> > short sMinor;
> > BSTR bstrName;
> > } COMPONENT_INFO;

> > In IDL:

> > SAFEARRAY(struct COMPONENT_INFO)* psa

> > In code:

> > hr = GetRecordInfoFromGuids(...);

> > Also, see item 4 in the COM/ATL FAQ in my signature.

> > --
> > =====================================
> > Alexander Nickolov
> > Microsoft MVP [VC], MCSD

> > MVP VC FAQ: http://www.mvps.org/vcfaq
> > =====================================

> > > I know the rules for passing UDTs between component and client.

> > > In IDL:
> > > 1. the user defined struct as follow:
> > > typedef [ uuid( FB42007A-4D9F-4395-8E4C-8874CA9B9547 ),
> > > helpstring("Component Information Struct") ]
> > > struct _COMPONENT_INFO{
> > > [string] char *pstrAuthor;
> > > short sMajor;
> > > short sMinor;
> > > BSTR bstrName;
> > > }COMPONENT_INFO;

> > > 2. the interface which use the UDT:
> > > [
> > > object,
> > > helpstring(...),
> > > dual,
> > > pointer_default(unique)
> > > ]
> > > Interface ...
> > > {
> > > [id(...)][helpstring(...)]...([out]?11??)

> > > 3. at server side to create the UDTs

> > > // { FB42007A-4D9F-4395-8E4C-8874CA9B9547 }
> > > DEFINE_GUID( GUID_Struct,
> > > 0xfb42007a, 0x4d9f, 0x4395, 0x8e, 0x4c, 0x88, 0x74, 0xca, 0x9b, 0x95,
> > 0x47);

> > > ITypeLib* pTypelib;
> > > ITypeInfo* pTypeInfo=NULL;
> > > IRecordInfo* pRecordInfo=NULL;

> > > hr = LoadRegTypeLib(LIBID_CHAPTER4_SERVERLib, 1, 0,
> GetUserDefaultLCID(),
> > > &pTypelib); // ok
> > > hr = pTypelib->GetTypeInfoOfGuid( GUID_Struct, &pTypeInfo );
> > > // get error why

> > > _ASSERT(SUCCEEDED(hr) && pTypeInfo);
> > > hr = GetRecordInfoFromTypeInfo(pTypeInfo, &pRecordInfo);
> > > _ASSERT(SUCCEEDED(hr) && pRecordInfo);

> > > pTypeInfo->Release();
> > > pTypelib->Release();

> > > rgsabound[0].lLbound = 0;
> > > rgsabound[0].cElements = nSize;

> > > psaArray = SafeArrayCreateEx( VT_RECORD, 1, rgsabound, pRecordInfo );

> > > Who can help me???

> > > --
> > > OICQ: 329170 ( ?D?3D? )
> > > ICQ : 37175293 ( ?? )
> > > ??3: http://www.ccw.com.cn c/c++

Wed, 26 Nov 2003 00:30:32 GMT