I installed a background desktop driver on Windows from inside WSL2. Here is what worked and what did not.

说明与用途

作者在 WSL2 中安装了 cua-driver 背景桌面驱动程序，以在不抢占焦点的情况下控制 WeChat 窗口。读取 UI、定位元素和点击均可工作，但后台输入不支持。

问题

Desktop automation scripts often steal focus and move the cursor, breaking when run alongside a user. A background driver that can interact with the desktop without stealing focus is needed.

结果

Background reading, locating, launching, and clicking work reliably on a real Chinese-language app. Background typing does not, requiring a foreground escalation or a second machine for conversational bots.

工作流

• 1. Install cua-driver Windows executable on Windows 10.
• 2. Run the driver from a Windows process launched in WSL2.
• 3. Verify the driver opens the named pipe \\.\pipe\cua-driver and reports an attached interactive desktop.
• 4. Use the driver to read a live WeChat window (138 elements).
• 5. Perform background clicks on UI elements using stable tokens.
• 6. Observe that foreground process remains unchanged.
• 7. Attempt background typing; observe failures and error messages.
• 8. Note that a foreground escalation can temporarily bring a window to the front if needed.

证据

Reading, locating, launching without fronting, and clicking all work, on a real Chinese-language app rather than a demo.

来源

Typing in the background does not work. cmd returned background_unavailable with the reason background input is dropped by this surface, naming the class ConsoleWindowClass.

来源