protected override void WndProc(ref Message m)
{
if (m.Msg == (int)NativeMethods.Msgs.WM_COPYDATA)
{
// message was sended by ProcessViewer.Hooks.dll from the Hooked application when
// a new message comes to that window
// LPARAM of this message contains a COPYDATASTRUCT which has HOOK_MSG struct in it
NativeMethods.COPYDATASTRUCT cdata =
(NativeMethods.COPYDATASTRUCT)m.GetLParam(typeof(NativeMethods.COPYDATASTRUCT));
// This is the information of the message which is sended to the hooked window
NativeMethods.HOOK_MSG msg = (NativeMethods.HOOK_MSG)Marshal.PtrToStructure(cdata.lpData,
typeof(NativeMethods.HOOK_MSG));
// process message and set its result (0 ignore, 1 do nothing, other values replace parameters)
m.Result = _subClass.ProcessMessage(m.WParam, ref msg);
Marshal.DestroyStructure(m.LParam, typeof(NativeMethods.COPYDATASTRUCT));
}
else if (m.Msg == HM_MESSAGE_RESULT)
//&& Properties.Settings.Default.HandleMessageResults)
{
// this message sended by hooked window to give information about the result of a message
_subClass.ProcessMessageResult(m.WParam.ToInt32(), m.LParam);
}
else
{
base.WndProc(ref m);
}
}
/// <summary>
/// Process message which belongs to the hooked window
/// </summary>
/// <param name="hWnd"></param>
/// <param name="hookedMessage"></param>
/// <returns>
/// This return value will be sended to the Hooked window by our Listener Control
///
/// Return value might be;
/// 0 : which means ignore this message (Hooked window will ignore this message)
/// 1 : Do nothing (Hooked window will do its original action for this message)
/// <Other Values> : We are going to change the wParam and lParam for this message
/// here the return value indicates an adress in the target process memory which contains
/// the new values of the wParam and lParam
/// By passing this address to the Hooked window, we make it read the new values
/// from this address and replace original wParam and lParam with the new values
/// and process message according to this new parameters
/// </returns>
internal IntPtr ProcessMessage(IntPtr hWnd, ref NativeMethods.HOOK_MSG hookedMessage)
{
lock (this)
{
IntPtr result = IntPtr.Zero;
NativeMethods.Msgs msg = (NativeMethods.Msgs)hookedMessage.msg;
switch (msg)
{
case NativeMethods.Msgs.WM_MOVE:
_wm.OnMove();
break;
case NativeMethods.Msgs.WM_SIZE:
_wm.OnResize();
break;
}
//if (Enabled && Breakpoints.ContainsKey(msg))
//{
// // if Breakpoints enabled and if we have a breakpoint for the
// // given message then do our action
// MessageBreakpoint watch = Breakpoints[msg];
// switch (watch.Action)
// {
// case BreakpointAction.IgnoreMessage:
// result = new IntPtr(1);
// break;
// case BreakpointAction.ManuelEditParameters:
// FormEditMessage em = new FormEditMessage(hWnd, msg, hookedMessage.wParam, hookedMessage.lParam);
// em.ShowDialog(FormMain.Instance);
// if (!em.Ignore)
// result = WriteToTargetProcessMemory(em.WParam, em.LParam, em.ModifiedMsg);
// else
// result = new IntPtr(1);
// break;
// case BreakpointAction.AutoChangeParameters:
// NativeMethods.Msgs modifiedMsg = (NativeMethods.Msgs)hookedMessage.msg;
// IntPtr wParam = hookedMessage.wParam;
// IntPtr lParam = hookedMessage.lParam;
// if ((watch.Modifications & ModifiyingSections.Message) == ModifiyingSections.Message
// && watch.ModifiedMsg != NativeMethods.Msgs.WM_NULL)
// modifiedMsg = watch.ModifiedMsg;
// if ((watch.Modifications & ModifiyingSections.WParam) == ModifiyingSections.WParam)
// wParam = new IntPtr(watch.WParam.Value);
// if ((watch.Modifications & ModifiyingSections.LParam) == ModifiyingSections.LParam)
// lParam = new IntPtr(watch.LParam.Value);
// result = WriteToTargetProcessMemory(wParam, lParam, modifiedMsg);
// break;
// }
//}
if (ShowMessages)
{
//StringBuilder text = new StringBuilder();
//text.AppendFormat("0x{0:X8}", hWnd.ToInt32());
//text.Append(" ");
//if (msgValues.ContainsKey(msg))
// text.Append(msgValues[msg]);
//else
// text.Append(msg);
//text.Append(" ");
//text.AppendFormat("wParam:{0}", hookedMessage.wParam);
//text.AppendFormat(" lParam:{0}", hookedMessage.lParam);
//if (result == (IntPtr)1)
// text.Append(Properties.Resources.Hook_Ignored);
//text.AppendLine();
//FormMain.Instance.txtMessages.AppendText(text.ToString());
}
return(result);
}
}