人在旅途

人在旅途发表于 2006/1/22 10:09:47

1.Use ClassWizard(IDispatch);
2.Use "#import *.dll"(IUnknown);
3.Use "#include *.h"(generate by the server compiling), (IUnknown);

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[微软技术开发]How to implement early binding of activeX in VC

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人在旅途发表于 2006/1/22 10:07:31

1. #import "d:\work\zjjapp\ZJJDatabaseSvr\Debug\ZJJDatabaseSvr.tlb"
using namespace ZJJDatabaseSvr; // get from ZJJDatabaseSvr.tlh's "namespace

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[微软技术开发]Study the _bstr_t source code

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人在旅途发表于 2006/1/22 8:33:59

The _bstr_t is a class, but it encapulate a inner object named m_Data. the m_Data has an reference counter which will be increased and decreased when necessary. And only when the counter is zero the will the Data delete itself. Thus just like CString in MFC, the real data is stored in the inner data meber "m_Data". And the lifecycle of the "m_Data" has nothing to do with the lifecycle of it's father the _bstr_t object. So when a _bstr_t is assigned to the other _bstr_t, only the point of "m_Data

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[微软技术开发]ATL:How make different COM objects which have the same default interface

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人在旅途发表于 2006/1/22 8:31:46

It is very simple.
1. Create all the objects with the wizarding.
2. Create a new interface seperately.
3. Changing as following(just a sample, IObj0 is the interface all objects have):
[
  uuid(EBD5C822-E3A9-11D2-9362-000021E7560C),
  helpstring("Obj1 Class")
]
coclass Obj1
{
  [default] interface IObj1;
};
to:
[
  uuid(EBD5C822-E3A9-11D2-9362-000021E75

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[微软技术开发]COM method and property arguments Test

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人在旅途发表于 2006/1/22 8:31:05

This project is here for me to study and test many problems which I met in other COM project and can't be solved, eg: Object,SAFEARRAY created in the server. Step1: Create a new ATL COM named ComTest
Result1:
Dim x As TESTCOMLib.ComTest
Set x = New TESTCOMLib.ComTest
x.GetVar o
: When the o is Passed into the ComTest as a variant* pRet, the pRet->vt == VT_EMPTY, and at this time you can return this variant as pRet->vt = VT_DISPATCH.
Resu

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[微软技术开发]Using Atl to create activex controls

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人在旅途发表于 2006/1/22 8:29:08

If you has a property in Atl control with the type of OLE_COLOR, then this property will appear in the StockColorPage automatically. So I you can use the following easily to support persistence for this property:
PROP_ENTRY("ValidColor", 1, CLSID_StockColorPage).
But strangely, the ativex control test container will not prompt you to save the values of this property if you have changed it.(at the same time,it will prompt you to save changes for other legal stock properties changing.

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[微软技术开发]The use of RGS file in registering of an ATL dll.

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人在旅途发表于 2006/1/22 8:28:26

In the ATL project, there is a with the extension as "RGS", the file is created and modified by project and class wizard. It is a resource file of the project, you can change it by text-edit. After your changing, you must rebuild the project, the affection will be inside the dll. And next time you register the DLL, your changing will be put into the registry. If there is any error in you changing in RGS, next you register the DLL, there will be an error reported by the "regsvr32.exe".

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[微软技术开发]ASSERT(AfxIsValidAddress(lpBuf, nCount));

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人在旅途发表于 2006/1/22 8:27:44

ASSERT(AfxIsValidAddress(lpBuf, nCount));
Use this to check if the buffer is valid.

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[微软技术开发]Important notes before implement Interface of COM using ATL

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人在旅途发表于 2006/1/22 8:26:43

BEGIN_COM_MAP(CThisObject)
COM_INTERFACE_ENTRY(IUnknown)
COM_INTERFACE_ENTRY_CHAIN(COtherObject)
END_COM_MAP( )
Caution As of version 3.0, ATL uses the compiler keyword __uuidof( class ) to obtain the corresponding IID for a given class. Because of changes in the COM_INTERFACE_ENTRY macros effective in version 3.0, now you simply include the header for the interface to use, instead of also linking to a library that defines the matching IIDs for that interfac

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[微软技术开发]How to debug shell extension in windows

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人在旅途发表于 2006/1/22 8:25:58

(From MSDN)
HOWTO: Debug a Windows Shell Extension Article ID: Q138942 The information in this article applies to: The development environment included with: - Microsoft Visual C++, 32-bit Edition, versions 2.0, 2.1, 2.2, 4.0, 4.1, 4.2 5.0
SUMMARY To debug a Windows Shell Extension using Microsoft Visual C++, you must specify the Windows shell as the "Executable For Debug Session" in Project Settings (Build Settings if using Microsoft Developer

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