有时候需要限制编辑框输入的字符，比如只允许输入字母字符，或者只允许输入数字字符，-sometimes necessary to restrict the importation of the edit box characters, such as only allowing the importation of alphabetical characters, or allow only the importation of digital characters,

用CEdit和CRichEdit实现通信，可以修改文字字体和颜色。-CRichEdit with CEdit and communications, change text fonts and colors.

改变CEDIT的背景和字体颜色的例子，很经典的，学控件编程的可以好好看看。-Change the background and font colors CEDIT example, classic, learning control programming can have a good look.