QT下的数字键盘输入法，类似于手机上的输入法，利用输入数字的组合判断拼音组合，可以输入汉字、英文，通过参数的调用切换。压缩包下带有使用的例子。输入法和例子都是自己写的，用在项目上，7寸屏下运行。(QT digital keyboard input method, similar to the input method on the phone, using the combination of input numbers to determine Pinyin combination, you can enter Chinese characters, English, through the call of parameters switching. Compressed package with the use of examples. Input methods and examples are written on their own, used in the project, 7 inch screen running.)