Introduction to PowerBuilder
 Horizontal and Vertical Scrollbars
Typically use of Scrollbars is to display
percentage. Some examples: to display the amount of work completed, or the
percentage selected. You might be seeing the scrollbars at the bottom of a window (say
MS-Word) or at the right hand side of the window.
However there is a difference between
scrollbars under Windows 3.11/NT 3.51 and Windows 95/NT 4.0. The H/Vscrollbar
controls available in PowerBuilder belong to the first category, even if you use PowerBuilder under Windows 95/NT 4.0.
The
indicator in the Scrollbar in the first category, represents
the cursor position in terms of the percentage of the whole content.
The indicator in the Scrollbar in the
second category not only indicates the current cursor position in terms of the percentage
of the whole content, but it also indicates the percentage of the content that is being
displayed on the screen.
In real life projects usage of Scrollbars
is less than one percent, since most of it is accomplished by a DataWindow control.
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