改进的Qt嵌入式输入法，支持中文、英文、符号输入。并且支持外接键盘的使用，状态切换、英文大小写等快捷键操作。双击输入栏，弹出软键盘功能。-Improved Qt embedded input method support Chinese, English, symbol input. And supports the use of an external keyboard, the state switching, English and other sensitive shortcut key

Qt开发的功能软键盘，实现了数字输入，小数点输入，小数点判断，负号输出功能，退格功能，清楚功能，输出功能，通过信号将textedit中的值传给主界面-Qt development function soft keyboard, realization of the digital input, the decimal point input, the decimal point to determine the negative signal output function, a backspa