在ubuntu/linux中使用Xlib或xinput控制多个指针 [英] Controlling multiple pointers with Xlib or xinput in ubuntu/linux

问题描述

我正在创建一个在多个xsession中使用多个游标(指针)的系统.我的计算机中有多个视频卡，用于控制不同的显示器.我希望每个屏幕上都有一个不同的光标并控制每个屏幕.每个监视器都是一个不同的会话.

I'm creating a system that uses multiple cursors (pointers) in multiple xsessions. My computer has multiple video cards in it for controlling different monitors. I want to have a different cursor on each screen and control each. Each monitor is a different session.

我开始使用以下命令在C语言中使用xlib库来控制单个光标:

I started using the xlib library in C to control the single cursor I have using the following command:

XWarpPointer(display,None,window,0,0,0,0,x,y);

这非常适合一个光标.然后，我在终端中使用xinput创建了第二个游标:

This works perfectly for one cursor. Then I created a second cursor using xinput in the terminal:

>>xinput create-master second

，然后在屏幕上有两个光标.我可以使用reattach命令用单独的鼠标来控制它们:

and then I have two cursors on screen. I can go and control each with a separate mouse by using the reattach command:

>>xinput reattach MOUSEID POINTERID

最后一步是使用xlib分别控制每个游标.当我使用xWarpPointer命令时，它只是在原始光标周围移动，而我找不到一种方法来指定要控制的光标.我也一直无法找到一种设置默认指针的方法.您可以在终端中使用"xinput list"查看所有指针的列表.有人知道我怎么能

The last step is to control each cursor separately using xlib. When I use the xWarpPointer command it just moves the original cursor around and I can't find a way to designate which cursor to control. I have also been unable to find a way to set the default pointer. You can see a list of all the pointers using "xinput list" in terminal. Does anyone know how I can

感谢您的帮助！

推荐答案

您需要使用XInput2扩展中的 XIWarpPointer 请求，它以deviceid作为参数

You need to use XIWarpPointer request from XInput2 extension, it takes deviceid as parameter

Bool     XIWarpPointer(
        Display*            display,
        int                 deviceid,
        Window              src_win,
        Window              dst_win,
        double              src_x,
        double              src_y,
        unsigned int        src_width,
        unsigned int        src_height,
        double              dst_x,
        double              dst_y
    );

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