使用Hook(钩子)阻止Flash启动浏览器打开URL

  为了达到禁止Flash打开浏览器的目的，从Hook（Hook不知道？天极里面资料很多的）入手，截获到Flash的相关事件信息，提前启动一个专杀浏览器的线程，使得Flash打开浏览器的瞬间关闭。我们先要找到Flash在播放电子杂志时候的一些相关数据,比如系统消息，发送给外部的消息结构为：

[StructLayout(LayoutKind.Sequential)]
public struct CWPSTRUCT
{
public IntPtr lparam;
public IntPtr wparam;
public int message;
public IntPtr hwnd;
}
//在C#中使用钩子

public delegate int HookProc(int code, IntPtr wparam, ref CWPSTRUCT cwp);
public static int WH_CALLWNDPROC = 0x004;
//安装钩子的函数

[DllImport("user32.dll", CharSet = CharSet.Auto,CallingConvention = CallingConvention.StdCall)]
public static extern IntPtr SetWindowsHookEx(int type, HookProc hook, IntPtr instance, int threadID);
//调用下一个钩子的函数

[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int CallNextHookEx(IntPtr hookHandle, int code, IntPtr wparam, ref CWPSTRUCT cwp);
//卸载钩子

[DllImport("User32.dll", CharSet = CharSet.Auto)]
public static extern bool UnhookWindowsHookEx(IntPtr hookHandle);
//获取窗体线程ID

[DllImport("User32.dll", CharSet = CharSet.Auto)]
public static extern int GetWindowThreadProcessId(IntPtr hwnd, int ID);
private HookProc hookProc;
private IntPtr hookHandle = IntPtr.Zero;