why does the input window shuts automatically?

Question

the input window automatically shuts down suddenly during my inputting when i attempt to input a long paragraph.(for example, when i use microsoft word or internet explorer) . it seems i don't press any wrong key at all. The OS is windows XP. Why does this happen?

Answer 1

because the text box was set up with a max length and you exceeded it. If it is happening with Excel or Word, you probably have a corrupt DLL.