VC设置代理方法

weixin_30748995

于 2013-07-29 11:38:00 发布

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原文链接：http://www.cnblogs.com/Clingingboy/p/3222607.html

本文详细介绍了如何在Internet Explorer 5及后续版本中为特定连接设置Internet选项，包括代理服务器配置、代理绕过规则等。

参考文章:

Setting Connection Options

In Internet Explorer 5 and later, Internet options can be set for on a specific connection. Previously, all connections shared the same Internet option settings. To set options for a particular connection:

Create an INTERNET_PER_CONN_OPTION_LIST structure.
Allocate the memory for the individual Internet options that you want to set for the connection.
Set the options in INTERNET_PER_CONN_OPTION structures.
Set the options using InternetSetOption.

BOOL SetConnectionOptions()
{
    INTERNET_PER_CONN_OPTION_LIST list;
    BOOL    bReturn;
    DWORD   dwBufSize = sizeof(list);

    // Fill the list structure.
    list.dwSize = sizeof(list);

    // NULL == LAN, otherwise connectoid name.
    list.pszConnection = NULL;

    // Set three options.
    list.dwOptionCount = 3;
    list.pOptions = new INTERNET_PER_CONN_OPTION[3];

    // Ensure that the memory was allocated.
    if(NULL == list.pOptions)
    {
        // Return FALSE if the memory wasn't allocated.
        return FALSE;
    }

    // Set flags.
    list.pOptions[0].dwOption = INTERNET_PER_CONN_FLAGS;
    list.pOptions[0].Value.dwValue = PROXY_TYPE_DIRECT |
        PROXY_TYPE_PROXY;

    // Set proxy name.
    list.pOptions[1].dwOption = INTERNET_PER_CONN_PROXY_SERVER;
    list.pOptions[1].Value.pszValue = TEXT("http://proxy:80");

    // Set proxy override.
    list.pOptions[2].dwOption = INTERNET_PER_CONN_PROXY_BYPASS;
    list.pOptions[2].Value.pszValue = TEXT("local");

    // Set the options on the connection.
    bReturn = InternetSetOption(NULL,
        INTERNET_OPTION_PER_CONNECTION_OPTION, &list, dwBufSize);

    // Free the allocated memory.
    delete [] list.pOptions;

    return bReturn;
}