人在旅途

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

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

软件技术

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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[Java技术]How to attach a user data(byte[]) to a soap message?

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人在旅途发表于 2006/1/22 8:29:49

1. You will need following JAR lib:
    1.saaj-api.jar: From J2ee lib;
    2.saaj-impl.jar: From J2ee lib;
    3.activation.jar: From J2ee lib;
    4.soap.jar: From Apache soap project.
url:http://www.apache.org/dyn/closer.cgi/ws/soap/
The jar file is small(about 250K), you can use it directly(Tested); Or you can get the source of class ByteArra

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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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[微软技术开发]Some thing about _bstr_t converting to char* or whcar*

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人在旅途发表于 2006/1/22 8:24:52

Some functions will require the arguement as char* , LPTSTR or WCHAR*, you can directory pass your variable of _bstr_t type to these functions and these functions can convert it automatically. But, when the functions' arguments are used for returning value, then you can not do it as followings:
For Example:
LPTSTR str = (LPTSTR )some_of_bstr_t;
SomeFunctions(str ,...);
or
SomeFunctions((LPTSTR )some_of_bstr_t,...); Most important:
T

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[微软技术开发]ATL:Implement the same default interface from different object in different DLLs(different project) and using user define type in the interface method.

软件技术

人在旅途发表于 2006/1/22 8:24:21

First Way:
1. As normally, first create the ATL object(Eg: First) and an ATL interface(Eg: IFirst) in a DLL by the ATL Wizard in the first project.
2. Add IFirst's method by using ATL Class Wizard.
3. Create a IDL file(For example, FirstInterface.idl), then move the definition of IFirst to that IDL file. Don't forget to move the necessary "#import" directive and necessary enum, structure definition to that IDL file.
4. Now you can remove the IFirst's definition from it's original

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