带滚动和缩放的控件，显示无闪烁。 先在窗口上放一CPicture.-with scrolling and zoom controls, showed no flicker. First put in a window CPicture.

带滚动和缩放的控件，显示无闪烁。 先在窗口上放一CPicture.-with scrolling and zoom controls, showed no flicker. First put in a window CPicture.

19.6 坐标轴saxis.c 19.7 矩形及其填充ssbox.c 19.8 矩形域图形的清除sscls.c 19.9 矩形域图形的复制scopy.c 19.10 矩形域图形的平移smove.c 19.11 圆形域图形的复制sccpy.c 19.12 圆形域图形的平移scmve.c-19.6 axis saxis.c 19.7 rectangle and fill ssbox.c 19.8 Rectangula