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<font color="#800080">VC知识库(五)</font>
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<font color="#800080">vckbase</font>
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URL文件的创建
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闻怡洋 <A href="mailto:wyy_cq@21cn.com"><FONT
class=engul>wyy_cq@21cn.com</FONT></A> <A
href="http://www.vchelp.net/"><FONT
class=engul>http://www.vchelp.net/</FONT></A>
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<P>如果你打开URL文件查看,你会发现文件结构与INI文件类似,例如Visual C++ Help.url文件内容, <PRE>[InternetShortcut]
URL=http://www.vchelp.net/
</PRE>所以你可以通过调用GetPrivateProfileString/WritePrivateProfileString来读/写URL文件。
<P></P>
<P>下面的代码演示了如何创建一个URL文件,其中参数的含义如下: <PRE>pszURL:网络地址,例如http://www.vchelp.net你也可以让它指向一个文件如:file://local_file_name。
pszURLFileName:URL文件名,例如c:\vchelp.url当Windows显示时只会显示vchelp,而不会显示扩展名。
szDescription:对该URL的描述。
szIconFile:显示该URL的图标文件,可以是EXE或DLL。
index:图标在文件中的位置。
HRESULT CreateInterShortcut (LPCSTR pszURL, LPCSTR pszURLfilename,
LPCSTR szDescription,LPCTSTR szIconFile = NULL,int nIndex = -1)
{//通过ShellLink接口来创建URL
HRESULT hres;
CoInitialize(NULL);
IUniformResourceLocator *pHook;
hres = CoCreateInstance (CLSID_InternetShortcut, NULL, CLSCTX_INPROC_SERVER,
IID_IUniformResourceLocator, (void **)&pHook);
//获得CLSID_InternetShortcut接口
if (SUCCEEDED (hres))
{
IPersistFile *ppf;
IShellLink *psl;
// Query IShellLink for the IPersistFile interface for
hres = pHook->QueryInterface (IID_IPersistFile, (void **)&ppf);
hres = pHook->QueryInterface (IID_IShellLink, (void **)&psl);
if (SUCCEEDED (hres))
{
WORD wsz [MAX_PATH]; // buffer for Unicode string
// Set the path to the shortcut target.
pHook->SetURL(pszURL,0);
hres = psl->SetIconLocation(szIconFile,nIndex);
if (SUCCEEDED (hres))
{
// Set the description of the shortcut.
hres = psl->SetDescription (szDescription);
if (SUCCEEDED (hres))
{
// Ensure that the string consists of ANSI characters.
MultiByteToWideChar (CP_ACP, 0, pszURLfilename, -1, wsz, MAX_PATH);
// Save the shortcut via the IPersistFile::Save member function.
hres = ppf->Save (wsz, TRUE);
}
}
// Release the pointer to IPersistFile.
ppf->Release ();
psl->Release ();
}
// Release the pointer to IShellLink.
pHook->Release ();
}
return hres;
}
</PRE>同样如果利用ShellLink接口也能够读取文件,通过GetArguments,GetDescription,GetIconLocation,GetPath等函数可以得到文件的信息。创建IShellLink接口指针的方法和上面相同。
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