Chinese input problem

Entering Chinese need spelling the tong of a word.
During spelling the entering need to see the process.
But when entering Chinese word in any text box, Chinese people can not see the whole process!
At least some program do not support Chinese input will make the inputting words on the left top screen before entering the words.
This is really a big problem! Especially inputting lyrics is very not convenient!
You need to try to install a Chinese input to try the problem out!
There are pinyin拼音, zhuyin注音, and cangjie倉頡 three major Chinese input method! They are all already in Windows.
Win10 v2.0.2