画直线，在C++环境下建立一个MFC工程，建议一个鼠标事件，并在此基础上，定义一个画刷，填充所花的区域-Draw a straight line, to establish an environment in C++ MFC project, suggested a mouse event, and on this basis, define a brush, filling the area spent

画一条抛物线，在C++环境下建立一个MFC工程，定义一个鼠标事件，并定义一个画刷，填充所画的图形-Draw a parabola, to establish an environment in C++ MFC project, define a mouse event, and define a brush, filling the painting graphics

画多条直线，在C++环境下，建立一个MFC工程，定义一个鼠标事件，并在此基础上，定义一个画刷，填充所画的图形-Draw multiple lines in C++ environment, build a MFC project, define a mouse event and on this basis, define a brush, filling the painting graphics