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序号：38094 发表者：无量 发表日期：2003-04-30 16:47:57
<br>主题：在产生ICatRegister时，“STRSAFE_MAX_CCH常量,StringCchCopy函数”在哪个头文件里？
<br>内容：HRESULT CreateComponentCategory(CATID catid, WCHAR *catDescription)<BR>{<BR> ICatRegister *pcr = NULL ;<BR> HRESULT hr = S_OK ;<BR><BR> hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr, <BR> NULL, CLSCTX_INPROC_SERVER, IID_ICatRegister, (void**)&pcr);<BR> if (FAILED(hr))<BR> return hr;<BR><BR> // Make sure the HKCR\Component Categories\{..catid...}<BR> // key is registered.<BR> CATEGORYINFO catinfo;<BR> catinfo.catid = catid;<BR> catinfo.lcid = 0x0409 ; // english<BR> int len;<BR> // Make sure the provided description is not too long.<BR> // Only copy the first 127 characters if it is.<BR> // The second parameter of StringCchLength is the maximum<BR> // number of characters that may be read into catDescription.<BR> // There must be room for a NULL-terminator. The third parameter<BR> // contains the number of characters excluding the NULL-terminator.<BR> hr = StringCchLength(catDescription, STRSAFE_MAX_CCH, &len);<BR> if (SUCCEEDED(hr))<BR> {<BR> if (len>127)<BR> {<BR> len = 127;<BR> }<BR> } <BR> else<BR> {<BR> //TODO: Write an error handler;<BR> }<BR> // The second parameter of StringCchCopy is 128 because you need <BR> // room for a NULL-terminator. <BR> hr = StringCchCopy(catinfo.szDescription, len + 1, <BR> catDescription);<BR> // Make sure the description is null terminated.<BR> catinfo.szDescription[len + 1] = '\0';<BR><BR> hr = pcr->RegisterCategories(1, &catinfo);<BR> pcr->Release();<BR><BR> return hr;<BR>}<BR>
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回复者：无量 回复日期：2003-04-30 16:55:40
<br>内容：编译时：<BR>error C2065: 'STRSAFE_MAX_CCH' : undeclared identifier<BR>error C2065: 'StringCchCopy' : undeclared identifier<BR><BR>已加了：<BR>#include "comcat.h"<BR>#include "OBJSAFE.H"
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<font color=red>答案被接受</font><br>回复者：FirstHoward 回复日期：2003-04-30 20:26:53
<br>内容：Header strsafe.h <BR>Import library strsafe.lib <BR><BR>http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/Resources/Strings/StringReference/StringFunctions/stringcchcopy.asp
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回复者：无量 回复日期：2003-05-06 23:34:10
<br>内容：strsafe.lib 和strsafe.h 在哪里？<BR>Visual Studio的目录中没有呀！<BR>邮给我好吗？<BR>liz_cq@163.com
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回复者：无量 回复日期：2003-05-07 14:04:20
<br>内容：下载Windows core sdk后能解决。<BR>HRESULT CreateComponentCategory(CATID catid, WCHAR *catDescription)<BR>{<BR> ICatRegister *pcr = NULL ;<BR> HRESULT hr = S_OK ;<BR><BR> hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr, <BR> NULL, CLSCTX_INPROC_SERVER, IID_ICatRegister, (void**)&pcr);<BR> if (FAILED(hr))<BR> return hr;<BR><BR> // Make sure the HKCR\Component Categories\{..catid...}<BR> // key is registered.<BR> CATEGORYINFO catinfo;<BR> catinfo.catid = catid;<BR> catinfo.lcid = 0x0409 ; // english<BR> unsigned int len;<BR> // Make sure the provided description is not too long.<BR> // Only copy the first 127 characters if it is.<BR> // The second parameter of StringCchLength is the maximum<BR> // number of characters that may be read into catDescription.<BR> // There must be room for a NULL-terminator. The third parameter<BR> // contains the number of characters excluding the NULL-terminator.<BR> hr = StringCchLength((LPTSTR)catDescription, STRSAFE_MAX_CCH, &len);<BR> if (SUCCEEDED(hr))<BR> {<BR> if (len>127)<BR> {<BR> len = 127;<BR> }<BR> } <BR> else<BR> {<BR> //TODO: Write an error handler;<BR> }<BR> // The second parameter of StringCchCopy is 128 because you need <BR> // room for a NULL-terminator. <BR> hr = StringCchCopy((LPTSTR)catinfo.szDescription, len + 1, (LPTSTR)catDescription);<BR> // Make sure the description is null terminated.<BR> catinfo.szDescription[len + 1] = '\0';<BR><BR> hr = pcr->RegisterCategories(1, &catinfo);<BR> pcr->Release();<BR><BR> return hr;<BR>}<BR>
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回复者：无量 回复日期：2003-05-07 14:08:26
<br>内容：但是DllRegisterServer调用时,"CLSID_SafeItem"是什么，又在哪里定义的呢？<BR><BR>STDAPI DllRegisterServer(void)<BR>{<BR> AFX_MANAGE_STATE(_afxModuleAddrThis);<BR> HRESULT hr = S_OK ;<BR><BR> if (!AfxOleRegisterTypeLib(AfxGetInstanceHandle(), _tlid))<BR> return ResultFromScode(SELFREG_E_TYPELIB);<BR><BR> if (!COleObjectFactoryEx::UpdateRegistryAll(TRUE))<BR> return ResultFromScode(SELFREG_E_CLASS);<BR><BR> // Mark the control as safe for initializing.<BR> hr = CreateComponentCategory(CATID_SafeForInitializing, L"Controls safely initializable from persistent data!");<BR> if (FAILED(hr))<BR> return hr;<BR> hr = RegisterCLSIDInCategory(CLSID_SafeItem, CATID_SafeForInitializing);<BR> if (FAILED(hr))<BR> return hr;<BR><BR> // Mark the control as safe for scripting.<BR> hr = CreateComponentCategory(CATID_SafeForScripting, L"Controls safely scriptable!");<BR> if (FAILED(hr))<BR> return hr;<BR> hr = RegisterCLSIDInCategory(CLSID_SafeItem, CATID_SafeForScripting);<BR> if (FAILED(hr))<BR> return hr;<BR><BR> return NOERROR;<BR>}<BR><BR><BR><BR>error C2065: 'CLSID_SafeItem' : undeclared identifier<BR>
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