帮忙指点一下InternetQueryOption的用法

[lake_cx]

我想用它查询IE的代理服务器设置，但是用户名和密码拿不到，总是返回False，错误代码是ERROR_INTERNET_INCORRECT_HANDLE_TYPE

TCHAR szBuf[256];
DWORD dwSize = sizeof(szBuf);
InternetQueryOption(NULL, INTERNET_OPTION_PROXY_PASSWORD, szBuf, &dwSize);

使用INTERNET_OPTION_PROXY_USERNAME也拿不到用户名，我的IE版本是6.0.2900.2180.xpsp_sp2_rtm

同时问下用INTERNET_OPTION_PROXY拿到的是不是INTERNET_PROXY_INFO的数组？为什么会有好几个dwAccessType是乱七八糟的数值的？是不是我找到dwAccessType为INTERNET_OPEN_TYPE_PROXY的就行了？

[菜牛]

第一个参数要给出打开的连接句柄。

[ygl1982820]

不会,study,帮忙LZ顶下

[yyunffu]

对，一楼正解。
函数的目的是要查询当前连接中的属性，当然要指明句柄。

[吹泡泡的小猫]

[Quote=引用 1 楼 Mackz 的回复:]
第一个参数要给出打开的连接句柄。
[/Quote]

要OpenInternet的句柄，如果这样就能拿到代理服务器的密码，那....

[zhb1190]

hInternet
[in] Handle on which to query information.

如一楼所说，要指明要查询谁的信息！
所以要指明句柄

[lake_cx]

Scope of HINTERNET Handle

The HINTERNET handle used to set or retrieve Internet options determines the actions for which the options are valid.

These handles have three levels:


The root HINTERNET handle (created by a call to InternetOpen) would contain all the Internet options that affect this instance of WinINet.
HINTERNET handles that connect to a server (created by a call to InternetConnect)
HINTERNET handles that are associated with a resource or enumeration of resources on a particular server.
In addition to the various HINTERNET handles, an application can also use NULL to set or retrieve the default values of the Internet options used by Internet Explorer and the WinINet functions. Setting Internet options when using NULL as the handle changes the default values of the options, which are currently stored in the registry. Client applications should not use registry functions to change the default values of the Internet options, because the implementation of how the options are stored can be altered in the future.

The following table lists the type of HINTERNET handles and the scope of the Internet options associated with them.

Handle Type Scope
NULL The default option settings for Internet Explorer.
INTERNET_HANDLE_TYPE_CONNECT_FTP The option settings for this connection to an FTP server. These options affect any operations initiated from this HINTERNET handle, such as file downloads.
INTERNET_HANDLE_TYPE_CONNECT_GOPHER The option settings for this connection to a Gopher server. These options affect any operations initiated from this HINTERNET handle, such as file downloads.
INTERNET_HANDLE_TYPE_CONNECT_HTTP The option settings for this connection to an HTTP server. These options affect any operations initiated from this HINTERNET handle, such as file downloads.
INTERNET_HANDLE_TYPE_FILE_REQUEST The option settings associated with this file request.
INTERNET_HANDLE_TYPE_FTP_FILE The option settings associated with this FTP resource download.
INTERNET_HANDLE_TYPE_FTP_FILE_HTML The option settings associated with this FTP resource download formatted in HTML.
INTERNET_HANDLE_TYPE_FTP_FIND The option settings associated with this search of files on an FTP server.
INTERNET_HANDLE_TYPE_FTP_FIND_HTML The option settings associated with this search of files on an FTP server formatted in HTML.
INTERNET_HANDLE_TYPE_GOPHER_FILE The option settings associated with this Gopher resource download.
INTERNET_HANDLE_TYPE_GOPHER_FILE_HTML The option settings associated with this Gopher resource download formatted in HTML.
INTERNET_HANDLE_TYPE_GOPHER_FIND The option settings associated with this search of files on an Gopher server.
INTERNET_HANDLE_TYPE_GOPHER_FIND_HTML The option settings associated with this search of files on an Gopher server formatted in HTML.
INTERNET_HANDLE_TYPE_HTTP_REQUEST The option settings associated with this HTTP request.
INTERNET_HANDLE_TYPE_INTERNET The option settings associated with this instance of the WinINet functions.


an application can also use NULL to set or retrieve the default values of the Internet options used by Internet Explorer and the WinINet functions.
这句不是说可以用NULL来获取由Internet Explorer设置的“Internet 选项”的默认值？

[lake_cx]

沉得太快了，再顶下