Mwroot: Created page with "{{#css: .poem { color: green; } }} 用电脑自带键盘时，PrtSc 键在右 Ctrl 旁边，经常误触，成功把 PrtSc 键改成了 Ctrl。过了段时间就忘记具体操作步骤了。后来买了一把外设键盘，没有了 PrtSc 键的烦恼。但是，右下角四个修饰键分别是 Alt RWin Memu Ctrl，刚开始想把 RWin 定义成 Menu，本以为照猫画虎即可自定义，没想到不成，于是有了下文的第一次向 ChatGPT 求助。用了..."

2025-09-29T03:35:41Z

Created page with "{{#css: .poem { color: green; } }} 用电脑自带键盘时，PrtSc 键在右 Ctrl 旁边，经常误触，成功把 PrtSc 键改成了 Ctrl。过了段时间就忘记具体操作步骤了。后来买了一把外设键盘，没有了 PrtSc 键的烦恼。但是，右下角四个修饰键分别是 Alt RWin Memu Ctrl，刚开始想把 RWin 定义成 Menu，本以为照猫画虎即可自定义，没想到不成，于是有了下文的第一次向 ChatGPT 求助。用了..."

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{{#css:
.poem { color: green; }
}}
用电脑自带键盘时，PrtSc 键在右 Ctrl 旁边，经常误触，成功把 PrtSc 键改成了 Ctrl。过了段时间就忘记具体操作步骤了。

后来买了一把外设键盘，没有了 PrtSc 键的烦恼。但是，右下角四个修饰键分别是 Alt RWin Memu Ctrl，刚开始想把 RWin 定义成 Menu，本以为照猫画虎即可自定义，没想到不成，于是有了下文的第一次向 ChatGPT 求助。

用了几个小时，发现按 Alt 键和 Ctrl 键还是太远了，同按很不方便。这之后就想把 RWin 改成 Ctrl，那样 Alt Ctrl 挨在一块儿，按起来省时省力，于是有了下文的第二次向 ChatGPT 求助。

现在，我的外设键盘右下角四个修饰键分别是 Alt Ctrl Menu Ctrl，即把 RWin 改成了 Ctrl，方便极了。

{| class="wikitable"
|我
|Hi, about keyboards remapping on Debian. I can use these codes in ~/.Xmodmap to remap PrtSc to Control_R:

<poem>
keycode 107 = Control_R
clear control
add control = Control_L Control_R
</poem>

I try these codes to remap RWin to Menu but was not worked:

<poem>
keycode 134 = KEY_Menu
clear KEY_Menu
add menu = KEY_Menu
</poem>

What should I change? How to know keycode names for future using? I would appreciate for any help.

|首先告诉 ChatGPT，这样写可以成功地把 PrtSc 自定义为 Control_R，其次询问为何照猫画虎却无法成功把 RWin 自定义为 Menu，最后问怎样知道某键的具体名字
|-
|ChatGPT
|To remap the RWin key to Menu on Debian, you can follow these steps:

1. Determine the keycode for the RWin key. You can use the <code>xev</code> command to find the keycode of a key. Open a terminal and run <code>xev</code>. A small window will appear. Make sure the xev window has focus, then press the RWin key. Look for the lines starting with "KeyPress" or "KeyRelease" in the xev window. Note down the keycode associated with the RWin key.

2. Create or edit your <code>.Xmodmap</code> file. Open a text editor and create a file named <code>.Xmodmap</code> in your home directory if it doesn't already exist. Add the following line to the file:

<poem>
keycode <RWin keycode> = Menu
</poem>

Replace <code><RWin keycode></code> with the actual keycode you obtained from step 1.

3. Save the <code>.Xmodmap</code> file and exit the text editor.

4. To apply the changes, run the following command in the terminal:

<poem>
xmodmap ~/.Xmodmap
</poem>

This will load the new keymap from the <code>.Xmodmap</code> file.

Now the RWin key should be remapped to the Menu key. You can test it by pressing the key and observing if the Menu functionality is triggered.

To answer your second question, you can find a list of keycodes and their corresponding names in the <code>/usr/include/X11/keysymdef.h</code> file. This file contains a comprehensive list of keys and their associated keycodes. You can search for the desired key name in that file to find its keycode.
|ChatGPT 说，首先用 <code>xev</code> 命令识别出 RWin 的 keycode，其次设定 keycode <keycode> = Menu，再次保存并索引 .Xmodmap，最后告诉我在 /usr/include/X11/keysymdef.h 中有 keycode 名字列表
|-
|我
|It works like a charm! Why I need to clear control, add contorl, but need not to clear menu then add menu?
|赞美 ChatGPT，并询问为何有的键要清除有的键不清除
|-
|ChatGPT
|I'm glad to hear that the remapping worked for you!

The reason you need to use the <code>clear</code> and <code>add</code> commands for the <code>control</code> modifier, but not for the <code>menu</code> modifier, is because of how Xmodmap handles modifier keys.

When you use the <code>clear</code> command, it clears the current definition of the specified modifier. In your case, you are clearing the <code>control</code> modifier with the line <code>clear control</code>. This ensures that any previous definition of the <code>control</code> modifier is removed before adding the new definition.

The <code>add</code> command is then used to add the desired keys to the modifier. In your case, you want both <code>Control_L</code> and <code>Control_R</code> to be part of the <code>control</code> modifier, so you use the line <code>add control = Control_L Control_R</code> to add them.

However, the <code>menu</code> modifier is not commonly used and may not have a pre-existing definition. Therefore, you don't need to use the <code>clear</code> command for <code>menu</code> because there is no previous definition to clear. You can directly use the <code>add</code> command to assign the <code>KEY_Menu</code> keycode to the <code>menu</code> modifier.

In summary, the <code>clear</code> and <code>add</code> commands are used to handle modifiers with multiple keys assigned to them. They ensure that any previous definitions are cleared and then the desired keys are added to the modifier. For modifiers without pre-existing definitions, you can directly use the <code>add</code> command.
|ChatGPT 表达了开心，随后解释有的键要清除，有的键不用清除，是因为 Xmodmap 把有的键视作修饰键，清除修饰键的旧定义是有必要的。而非修饰键一般没有旧定义，所以可以直接定义
|-
|我
|Thank you my good teacher : )
|盛赞 ChatGPT
|-
|ChatGPT
|You're very welcome! I'm glad I could assist you. If you have any more questions, feel free to ask. Happy remapping!
|友好结束上一话题
|-
|我
|And now, I do not want to remap RWin to Menu, I want to remap RWin (keycode = 134) to Contrl_R, how to write directive?
|询问 ChatGPT 我想把 RWin 自定义为 Control_R 该怎么操作
|-
|ChatGPT
|To remap the RWin key (keycode 134) to Control_R, you can modify your <code>.Xmodmap</code> file as follows:

1. Open your <code>.Xmodmap</code> file in a text editor.

2. Add the following line to the file:

<poem>
keycode 134 = Control_R
</poem>

This line maps the keycode 134 to the Control_R key.

3. Save the <code>.Xmodmap</code> file and exit the text editor.

4. To apply the changes, run the following command in the terminal:

<poem>
xmodmap ~/.Xmodmap
</poem>

This will load the new keymap from the <code>.Xmodmap</code> file.

Now the RWin key (keycode 134) should be remapped to Control_R. Test it by pressing the key and observing if the Control_R functionality is triggered.
|ChatGPT说，直接设罝 keycode 134 = Control_R 即可
|-
|我
|<poem>
keycode 135 = Control_R
clear control
add control = Control_L Control_R
keycode 134 = Control_R
</poem>

I use codes above in .Xmodmap to remap Menu to Control_R, worked. And want to remap RWin to Control_R. After I <code>source .Xmodmap</code>, I get this error:

<poem>
X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 118 (X_SetModifierMapping)
Value in failed request: 0x17
Serial number of failed request: 14
Current serial number in output stream: 14
</poem>
|反馈给 ChatGPT，告诉它直接设置会报 BadValue 错误
|-
|ChatGPT
|The error you encountered suggests that there is an issue with the modifier mapping in your <code>.Xmodmap</code> file. When remapping a key to a modifier like Control_R, it's important to ensure that the modifier mappings are set up correctly. In your case, it seems that there might be a conflict in the modifier definition.

To resolve this issue, you can modify your <code>.Xmodmap</code> file as follows:

1. Open your <code>.Xmodmap</code> file in a text editor.

2. Update the lines related to the Control modifier as follows:

<poem>
keycode 135 = Control_R
clear control
add control = Control_L Control_R
remove mod4 = Control_R
</poem>

Here, we are adding a new line <code>remove mod4 = Control_R</code> to remove any existing mapping of Control_R to mod4 (which is typically associated with the Windows key).

3. Save the <code>.Xmodmap</code> file and exit the text editor.

4. To apply the changes, run the following command in the terminal:

<poem>
xmodmap ~/.Xmodmap
</poem>

This will load the new keymap from the <code>.Xmodmap</code> file.

After making these changes, the RWin key (keycode 134) should be remapped to Control_R without any conflicts. Make sure to test the remapped key to ensure it is functioning as expected.
|ChatGPT 首先分析报错是因为自定义出现了冲突，即一个键定义了两个含义，其次告诉我加一行 remove mod4 = Control_R 即可
|-
|}

最终，在 Debian 中把 RWin 自定义为 Ctrl 的代码如下：
<poem>
clear Mod4
keycode 134 = Control_R
add control = Control_L Control_R
</poem>

ChatGPT 有多强：用 ChatGPT 自定义键盘 - Revision history