通过键盘1和2的转换在屏幕上用鼠标画直线和长方形

把特定格式的3D模型显示出来，并且能用键盘和鼠标控制。3D文件已包含在压缩包里（abc.obj。-The specific format of 3D model is displayed, and can use the keyboard and mouse control. 3D document has been included in the compression bag (abc.obj.

鼠标和键盘进行交互，对2维图像进行变换。-Mouse and keyboard to interact, to transform 2-D images.

OpenGl入门，包括二维图形显示，旋转，鼠标事件和键盘事件-OpenGl entry, including the two-dimensional graphical display, rotation, mouse events and keyboard events