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02 GUI & Scribble jjcao Based on the idea of Professor Ligang Liu
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Demo
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Requirements Scribble based on QT
Draw line, ellipse, rectangle & polygon, & draw freehand Encapsulate each primitive into a Class, such as Line, Ellipse, Rect, Polygon, Freehand. All primitive should inherent from a parent class: Shape. Set the color, thickness, type of the pen Draw a Bezier curve [advance] Note: the input of polygon can be finished by single click of the mouse’s right button.
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The objective 体会QT的GUI编程，学习添加菜单、工具条，鼠标交互，绘图，对话框，等 体会QT的signal & slot机制
巩固类的封装 学习类的继承和多态
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The process 08-QT-GUI.pptx D:\Qt\4.7.2\bin\assistant.exe
C++ GUI Programming with Qt4 Imitate the base project in hw04_GuiScribble.rar to add functions of Ellipse, Rect, Polygon
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