WTL学习过程中遇到的一些问题总结

一.   COM_INTERFACE_ENTRY2类型转换失败处理

在学习WTL过程中, VS2005打开以前VC6的工程, 报这个错

错误描述如下:
1>d:/visual studio 2005/projects/iehost/maindlg.h(112) : error C2440: 'static_cast' : cannot convert from 'ATL::IDispEventSimpleImpl *' to 'IDispatch *'
1>        with
1>        [
1>            nID=37,
1>            T=CMainDlg,
1>            pdiid=& DIID_DWebBrowserEvents2
1>        ]
1>        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>d:/visual studio 2005/projects/iehost/maindlg.h(112) : error C2440: 'initializing' : cannot convert from 'ATL::_ATL_CREATORARGFUNC (__stdcall *)' to 'DWORD_PTR'
1>        There is no context in which this conversion is possible
1>maindlg.cpp
1>d:/visual studio 2005/projects/iehost/maindlg.h(112) : error C2440: 'static_cast' : cannot convert from 'ATL::IDispEventSimpleImpl *' to 'IDispatch *'
1>        with
1>        [
1>            nID=37,
1>            T=CMainDlg,
1>            pdiid=& DIID_DWebBrowserEvents2
1>        ]
1>        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>d:/visual studio 2005/projects/iehost/maindlg.h(112) : error C2440: 'initializing' : cannot convert from 'ATL::_ATL_CREATORARGFUNC (__stdcall *)' to 'DWORD_PTR'
1>        There is no context in which this conversion is possible

解决方法:
1
、把COM_INTERFACE_ENTRY2改为COM_INTERFACE_ENTRY_IID

2、把IDispatch改为IID_IDispatch

 

. fatal error CVT1100: 重复的资源。type:MANIFEST, name:1, language:0x0409

这个是

出现fatal error CVT1100: 重复的资源。type:MANIFEST, name:1, language:0x0409错误的原因是VC低版本用高版本打开引起的,解决方案:
.rc
中注释掉:CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "res//程序.exe.manifest"即可

 

. 在使用WTL包含ActiveX控件的例子中, 编译通过运行报错: ATLASSERT(!InlineIsEqualGUID(*m_plibid,GUID_NULL) && "Did you forget to pass the LIBID to CComModule::Init?");

http://www.cchsu.com/arthur/prg_bg5/wtl4.htm

ATL 7.0/7.1 bug

WTL 7.x 在搭配 ATL 7.x 使用時,若用到了 ActiveX control,則會在執行的時候觸動 atlcom.h 中的某個 ASSERT:

 

ATLASSERT(!InlineIsEqualGUID(*m_plibid,GUID_NULL) && "Did you forget to pass the LIBID to CComModule::Init?");

這應是 ATL 7.x 中的 bug,解決的方法有兩種:

 

1. Project Properties Use of ATL 改成 Dynamic Link to ATL

2. Project Properties Use of ATL 改成 Static Link to ATL,同時將 tWinMain() 中的

hRes = _Module.Init(NULL, hInstance);

改成

GUID guid;hRes = _Module.Init(NULL, hInstance, &guid);

這樣就可以解決這個討厭的 ASSERT bug

实际上 我只修改成这样就可以了

GUID guid;

hRes = _Module.Init(NULL, hInstance, &guid);

 

 

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