弹出窗口杀手(上)(3)

　　下面是演示代码：
 
Process[] myProcesses = Process.GetProcessesByName("IEXPLORE");

foreach(Process myProcess in myProcesses)
{
FindPopupToKill(myProcess);
}

protected void FindPopupToKill(Process p)
{
// traverse all threads and enum all windows attached to the thread
foreach (ProcessThread t in p.Threads)
{
int threadId = t.Id;

NativeWIN32.EnumThreadProc callbackProc =
new NativeWIN32.EnumThreadProc(MyEnumThreadWindowsProc);
NativeWIN32.EnumThreadWindows(threadId, callbackProc, IntPtr.Zero /*lParam*/);
}
}

// callback used to enumerate Windows attached to one of the threads
bool MyEnumThreadWindowsProc(IntPtr hwnd, IntPtr lParam)
{
public const int WM_SYSCOMMAND = 0x0112;
public const int SC_CLOSE = 0xF060;

// get window caption
NativeWIN32.STRINGBUFFER sLimitedLengthWindowTitle;
NativeWIN32.GetWindowText(hwnd, out sLimitedLengthWindowTitle, 256);

String sWindowTitle = sLimitedLengthWindowTitle.szText;
if (sWindowTitle.Length==0) return true;

// find this caption in the list of banned captions
foreach (ListViewItem item in listView1.Items)
{
if ( sWindowTitle.StartsWith(item.Text) )
NativeWIN32.SendMessage(hwnd, NativeWIN32.WM_SYSCOMMAND,
NativeWIN32.SC_CLOSE,
IntPtr.Zero); // try soft kill
}

return true;
}

public class NativeWIN32
{
public delegate bool EnumThreadProc(IntPtr hwnd, IntPtr lParam);

[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern bool EnumThreadWindows(int threadId, EnumThreadProc pfnEnum, IntPtr lParam);

// used for an output LPCTSTR parameter on a method call
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
public struct STRINGBUFFER
{
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)]
public string szText;
}