Notice that the elements turns blue, the background for the Value field changes color, and that a little blue arrow icon appears in the Test Contents tree on the response node (Figure 16).
注意，元素变成了蓝色，value域的背景颜色发生了改变，一些蓝色的箭头图标出现在了响应节点的Test contents树中(图16)。
These variables store the value of the period for each column and the background color for each column.
这些变量存储了每一列的 period 值和背景颜色。
COLORREF value that represents the current background color. If this value is -1, the control is using the system color for the background color.
返回一个代表当前背景颜色的COLORREF值。如果这个值是- 1，则控件正使用系统的颜色作为背景色。
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