After editing and correcting, "ghosts" of deleted stitches may appear in the drawing. To redraw the pattern cleanly, type F5 or select View \ Refresh.
在编辑和改正后,可能会有一些地方有删除的痕迹。刷新图案可以消除这些痕迹,刷新可以用f 5或者选察看\刷新。
Here, we predefine each property with a default colour, and tell it to redraw the view each time a user changes its value.
这里,我们使用默认的颜色来预定义每一个属性,然后告诉他,在用户每一次更改它的值的时候重绘视图。
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