生命是过客，人在旅途。奶奶是信基督教的，没啥文化，却养育了四子二女，还带过九个孙辈。老人家对生命的看法就是“人都是客人，迟早要回去的。”就以《人在旅途》来纪念她。
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 [微软技术开发]Never try to return an SAFEARRAY with an event in activex object | |
Never try to return an SAFEARRAY with an event in activex object. | |
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| [微软技术开发]How to get the point of the buffer in SAFEARRAY | |
Use the SafeArrayAccessData(...) to get the point of the buffer in the SAFEARRAY. | |
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| [微软技术开发]About BSTR in ATL | |
when a property is defined as BSTR. and you will like to get it in VB, this time always your get_xxxx routime in VC will will received a NULL BSTR, you must allocate (by sysallocatestring or _bstr_t.Copy or CComStr.Copy) a new BSTR and assign value then you can return it. Now your VB programe can receive it right. | |
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| [微软技术开发]How to get ACTIVEX CONTROL OR OBJECT'S PATH IN VC | |
USE THIS FUNCTION ::GetModuleFileName() to get a dll's path and name. | |
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| [微软技术开发]How to use BSTR&_bstr_t in VC | |
bstr_t t; t = "test"; WORD n = t.length(); // n is 4 char* p = (char*)t; //but you can't change the buffer in p n = strlen(p); 删除 |
 [微软技术开发]A new way to use ADO in VC++ | |
Techniques for Using ADO in C++ Applications There are a couple of ways to use ADO in your C++ code. You can use the ADO header files and import library from the OLE DB SDK. You include the ADO header files (adoid.h and adoint.h) in your source and add the ADO import library adoid.lib to your linker input. This enables you to create instances of the ADO objects and access their member functions. Using this metho | |
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| [微软技术开发]About the storage file in VC | |
You can get a sub-stream or a sub-storage from a root storage. But what is you must pay much attention is that if the root storage is released, the sub-stream or storage will be automatically released. | |
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| [微软技术开发]Three way to import a COM | |
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 | |
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 | |
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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