How to disable keyboard and mouse temparily

laolu

When I use X extension to simulate X event to applications, I want to disable keyboard and mouse temparily in order to avoid the user interception.

Is there a way to do that?

Thanks in advance.

Any help is appreciated.

argv

Simple:
Unplug your keyboard & mouse temparily:p

kj501

如果xwindow是事件驱动的吧，可以忽略掉相应的事件。
如果不是，。。。

laolu

不是那么简单。关键是如何让其他应用程序忽略用户的输入。有点像windows下面的hook.但是在Xwindow下面如何做这个hook?

laolu

忘了谢谢各位了，我希望有更多的人能够参与讨论。

kj501

可以先了解一下xwindow的事件驱动机制。
http://www.kerguelen.org/x/tutorial-8.html
其实直接用xlib编程是很麻烦的，一般都是用图形库开发比较方便。可以去看看QT或GTK是如何处理事件的。

flavor

我在图书馆借了一本linux OpenGL编程，看不太懂！

X-win的编程用kylix我觉得还可以。

laolu

Is there a system call which can disable the keyboard device?

kj501

xwindow是在用户态实现的，不需要进行系统调用。
还是多了解一下xlib的使用。

laolu

Hi kj501,

Thank you for your reply.

I have done research on it for a long time. I don't think there's a xlib function could intercept the X events like the hook in Windows. Do you have any suggestion on it?

I have tried other extension library such as X Record.  However, I can only get a copy of the events but intercept them. I am thinking about X Trap extension library. If anybody here has exprience on it, please reply or send email to me.

I also wonder if there's a system call could disable keyboard such as a device driver. If I can disable the keyboard at the level. X server won't generate X keyboard events. It is also a workaround for my current project.

Thank you.

--------------------
I cannot figure out how to input Chinese in English UI on Gentoo.