private int GetMessageHookProc(int code, IntPtr wParam, IntPtr lParam)
{
if (code >= 0)
{
if ((long)wParam > 0L)
{
Message structure = (Message)Marshal.PtrToStructure(lParam, typeof(Message));
if ((this.NotifyGetMessageEvent(ref structure) & MessagePreviewResult.NoDispatch) == MessagePreviewResult.NoDispatch)
{
if (RadMessageFilter.callNextHookWhenNoDispatch)
{
structure.HWnd = new IntPtr(-1);
structure.Msg = -1;
Marshal.StructureToPtr((object)structure, lParam, true);
}
}
}
}
try
{
return(RadMessageFilter.CallNextHookEx(this.getMessageHookAddress, code, wParam, lParam));
}
catch (AccessViolationException ex)
{
}
return(0);
}
private int SystemMessageHookProc(int code, IntPtr wParam, IntPtr lParam)
{
if (code >= 0)
{
this.NotifyMessageFilterEvent((SystemMessage)code, lParam);
}
return(RadMessageFilter.CallNextHookEx(this.systemMessageHookAddress, code, wParam, lParam));
}
private int CallWndProcHookProc(int code, IntPtr wParam, IntPtr lParam)
{
if (code >= 0)
{
this.NotifyCallWndProcEvent(wParam, lParam);
}
return(RadMessageFilter.CallNextHookEx(this.callWndProcHookAddress, code, wParam, lParam));
}
private void Install(InstalledHook toInstall)
{
int currentThreadId = AppDomain.GetCurrentThreadId();
if ((toInstall & InstalledHook.CallWndProc) != InstalledHook.None && (this.installedHook & InstalledHook.CallWndProc) == InstalledHook.None)
{
this.callWndProcHookAddress = RadMessageFilter.SetWindowsHookEx(RadMessageFilter.HookType.WH_CALLWNDPROC, this.callWndProcDelegate, IntPtr.Zero, currentThreadId);
this.installedHook |= InstalledHook.CallWndProc;
}
if ((toInstall & InstalledHook.GetMessage) != InstalledHook.None && (this.installedHook & InstalledHook.GetMessage) == InstalledHook.None)
{
this.getMessageHookAddress = RadMessageFilter.SetWindowsHookEx(RadMessageFilter.HookType.WH_GETMESSAGE, this.getMessageDelegate, IntPtr.Zero, currentThreadId);
this.installedHook |= InstalledHook.GetMessage;
}
if ((toInstall & InstalledHook.SystemMessage) == InstalledHook.None || (this.installedHook & InstalledHook.SystemMessage) != InstalledHook.None)
{
return;
}
this.systemMessageHookAddress = RadMessageFilter.SetWindowsHookEx(RadMessageFilter.HookType.WH_MSGFILTER, this.systemMessageDelegate, IntPtr.Zero, currentThreadId);
this.installedHook |= InstalledHook.SystemMessage;
}
private void Uninstall(InstalledHook toUninstall)
{
if ((toUninstall & InstalledHook.CallWndProc) != InstalledHook.None && (this.installedHook & InstalledHook.CallWndProc) != InstalledHook.None)
{
RadMessageFilter.UnhookWindowsHookEx(this.callWndProcHookAddress);
this.callWndProcHookAddress = IntPtr.Zero;
this.installedHook &= ~InstalledHook.CallWndProc;
}
if ((toUninstall & InstalledHook.GetMessage) != InstalledHook.None && (this.installedHook & InstalledHook.GetMessage) != InstalledHook.None)
{
RadMessageFilter.UnhookWindowsHookEx(this.getMessageHookAddress);
this.getMessageHookAddress = IntPtr.Zero;
this.installedHook &= ~InstalledHook.GetMessage;
}
if ((toUninstall & InstalledHook.SystemMessage) == InstalledHook.None || (this.installedHook & InstalledHook.SystemMessage) == InstalledHook.None)
{
return;
}
RadMessageFilter.UnhookWindowsHookEx(this.systemMessageHookAddress);
this.systemMessageHookAddress = IntPtr.Zero;
this.installedHook &= ~InstalledHook.SystemMessage;
}
