我认为没有办法在 Windows 上执行此操作，如果您正在测试的话.这也是我的应用程序的一个问题，用户应该能够按住 Alt 来使用颜色选择器.不过在 macOS 和 Ubuntu 上运行良好.

I don't think there is a way to do this on Windows, if that's where you're testing. It's been a problem for my application too, where the user should be able to hold Alt to use a colour picker. Works fine on macOS and Ubuntu though.

我的猜测是，它与 alt 是在 Windows 上激活菜单项的全局快捷方式有关.虽然 Ubuntu 也是如此，但它在那里运行良好.

My guess is that it has something to do with alt being a global shortcut for activating menu items on Windows.. though the same is true for Ubuntu, and it works fine there.

这似乎是一个问题，例如Windows 上的 Photoshop 也是如此，有几个常见的技巧可以解决这个问题:

It seems to be an issue for e.g. Photoshop on Windows as well, with several common hacks to work around it:

• https://superuser.com/questions/1086805/windows-10-how-to-disable-menu-bar-toggle-by-pressing-alt
• https://answers.microsoft.com/en-us/windows/forum/windows8_1-desktop/how-can-i-disable-altunderlined-letter-shortcut-in/67a6e0b1-f161-4870-b9f5-33470f1a5ddb