Win7 shortcut key switch input method failure?

First, let's see if the input method switching problem only occurs in Word documents. Let's take a good example of Win7, the Word document in Office2010 as an example, to see how this input method switch is solved:
click “file-options":

in the "options" window , click “Advanced”, then find the “Input Method Control Active” from the right detail window and tick it.

Restart Word and check if the problem is solved.

Of course, if not only the input method switching in Word fails, it can't be switched in other applications (such as Notepad). Or some of the software's own shortcut keys and the system's default input method switching shortcuts conflict, we can change the system's default settings. The details are as follows:
Right-click on the language bar and select “Set”.

After popping up the "Text Service and Input Language" window, switch to the "Advanced Key Settings" tab. Select an action (such as language switching or full-width switch), and then click the "Change button sequence" button to enter the custom window.

Define a set of shortcuts according to your own usage habits and save the settings.