如何使用InternetSetOption

本文关键字：InternetSetOption 何使用 | 更新日期: 2023-09-27 17:59:22

这个问题：

使用代理与web浏览器控制

告诉我使用"InternetSetOption"。我该如何使用它？我如何在代码中实现它（例如？）？

谢谢！

如何使用InternetSetOption

public struct Struct_INTERNET_PROXY_INFO
{
    public int dwAccessType;
    public IntPtr proxy;
    public IntPtr proxyBypass;
}
[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(
    IntPtr hInternet,
    int dwOption,
    IntPtr lpBuffer,
    int lpdwBufferLength);
private void RefreshIESettings(string strProxy)
{
    const int INTERNET_OPTION_PROXY = 38;
    const int INTERNET_OPEN_TYPE_PROXY = 3;
    Struct_INTERNET_PROXY_INFO struct_IPI;
    struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
    struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy);
    struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");
    IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));
    // Converting structure to IntPtr
    Marshal.StructureToPtr(struct_IPI, intptrStruct, true);
    bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI));
}
private void Usage()
{
    RefreshIESettings("1.2.3.4:8080");
    object nullObject = 0;
    string strTemp = "";
    object nullObjStr = strTemp;
    axWebBrowser1.Navigate("http://test.com", ref nullObject, ref nullObjStr, ref nullObjStr, ref nullObjStr);
}