Volume 6A: Motif Programming Manual

Output of tick_marks.c

The Scale can have any kind of widget as a child, but it is common to use Labels to represent tick marks. All of the

children are evenly distributed along the axis of the slider; no other layout method is possible. As you can see in the

figure, the tick marks are placed all the way to the left of the Scale widget to leave space for the value indicator. It is

not possible to force the tick marks up against the Scale by using the XmNalignment resource of the Labels or to

control the layout of the tick marks in any way.

14.6 Summary

The Scale widget is a simple widget, both in concept and in practical use. In this chapter, we have showed a few

possible uses of the Scale to represent a range of values. The range of a Scale, as well as its orientation, are

customizable. The widget also provides callbacks that allow an application to keep track of the value of the Scale as

the user changes it. These features make the Scale quite versatile.

14 The Scale Widget 14.6 Summary

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