点击Browse按钮以打开Encyclopedia File Manager(图9)，从这里我们可以选择一个位图文件，将其作为图标使用。
Clicking the Browse button opens the Encyclopedia file Manager (Figure 9), where we can choose a bitmap file to use as an icon.
禁止存取状态的按钮的位图通常和正常状态的一样，但是颜色的对比度较小，就象变灰的菜单选项一样。
The bitmap for the disabled state usually resembles the one for the up state but has lower contrast (like a dimmed or grayed menu selection).
位图也用于必须被非常快地绘制的诸如图标，鼠标指针和出现在应用程序工具栏中按钮的小图像的显示。
Bitmaps are also used for displaying small images that must be drawn very quickly, such as ICONS, mouse cursors, and buttons that appear in application toolbars.
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