Description: QT environment, a virtual keyboard window, has been set to a class, and we need to use the keyboard if you can learn from.
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File list (Check if you may need any files):
KeyBoard\KeyBoard.pro
........\KeyBoard.pro.user
........\keyboardwidget.cpp
........\keyboardwidget.h
........\main.cpp
........\ui_keyboardwidget.h
KeyBoard
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