How to disable keyboard and mouse temparily

kj501

http://tronche.com/gui/x/xlib/input/pointer-grabbing.html
http://tronche.com/gui/x/xlib/input/XAllowEvents.html
具体用法可以看xev的源代码。这是它的manpage：
http://www.xfree86.org/current/xev.1.html

laolu

XEV uses XSelectInput to get events from a given resource. I uses X Record Extension to do that.

Grab can get the events which are sent to a window. However, the problem is that I also simulate events to that window at the same time. That means I cannot grab the keyboard or mouse events to my application since that window needs to process keyboard or mouse events.

mouse keyboard device
-------------------------------
X Server
-------------------------------
app         |       my client

In the figure, I want to simulate events to app. I can send events using X Test extension to app. But I don't want user input anything at that time. So, I think one way is disable the keyboard and mouse device. Another way is the keyboard and mouse events redirect to my client. However, in the second way, the events I simulated are also redirect to my client.

Thank you. I am very glad to discuss this topic with you.

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

kj501

如果说要同时处理鼠标和键盘事件，又要处理你的自定义事件，可以考虑把所有的事件都捕捉后，再分开来处理。
btw:我不熟悉xlib编程，这只是我的一个想法。

laolu

It is a good way to do that. Actually I use this way (hook) on Windows platform. But i cannot find the way X Window platform.

It is why i ask for a system call to disable keyboard and mouse.

But I don't think linux or unix would allow an application without root permission to do that.

kj501

图形界面的编程我也只是懂一点皮毛，没有办法和楼主更深入一步的交流了。