目前常用的输入法基本上有两种类型：外挂式（如早期的万能五笔）及输入法接口式（Input Method Editor-IME）。外挂式比较简单，就是一个exe文件，通过模拟一些Windows输入消息来给当前处于活动状态的编辑窗口输入文字，一个显著的优点是输入法只要启动一次，就可以在所有进程中使用；但缺点不不容忽视，首先实现起来也不容易，一个更大的不足是兼容性不够好，通常一个Windows版本需要一人对应的输入法版本，此外这类输入法为了能够截获用户输入，通常需要挂接键盘钩子，容易造成系统不稳定或者效率不高。-Currently commonly used input method basically has two types: external (such as universal early five-stroke) and the input method interface type (Input Method Editor-IME). Relatively simple plug-in type is a exe file, by simulating a number of Windows input message to the current active editor window to enter text, a significant advantage is the input method as long as the start time, you can use in all processes　but do not disadvantage can not be ignored, first of all, it was not easy to achieve, a greater lack of compatibility are not good enough, usually a Windows version required one person version of the corresponding input method, in addition to this type of input method in order to be able to intercept user input, usually articulated necessary keyboard hook , easily lead to system instability or inefficient.