英文的解决方案：
I have problems entering Polish characters on US English keyboards
Appropriately configured Microsoft Windows servers enable users to set the input locale to “Polish (Programmers)” to enter accented Polish characters using a US English keyboard. This can also be configured on the Citrix Receiver for Linux.
To allow the entry of accented Polish characters on US English keyboards
Note: This setting is not recommended for use with any other keyboard layout.
1. On the Tools menu, click Settings.
2. Select Preferences from the drop-down list to display the Preferences page.
3. Set the Keyboard Layout to Polish (Programmers) and click OK.
4. Open the wfclient.ini configuration file.
5. Edit the following line in the [WFClient] section: UnicodeKeyboard=Off
6. Save and close the file.