Copy or load scroll bar characters
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USupported on Unix
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VSupported on OpenVMS
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NSupported in Synergy .NET
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xcall U_CHARSB(D_LOAD|D_COPY, characters)
Arguments
D_LOAD
Set scroll bar characters. (n)
D_COPY
Return current scroll bar characters. (n)
characters
The series of scroll bar characters. (a12)
Discussion
U_CHARSB copies or loads the characters you want to use for denoting the various states of a scroll bar window in Unix or OpenVMS environments. (This routine does work on Windows, but the results are non-standard.)
If D_LOAD is specified, the contents of characters will supersede any previously-defined scroll bar characters. D_COPY returns to the current settings for the scroll bar characters in characters.
Characters contains 12 individual characters to display in a scroll bar. The table below shows the order of specification and the “initial” values of the characters upon program setup. The horizontal and vertical fill characters are set to the horizontal and vertical line-drawing characters. This makes the indicator appear to “slide” along a line, which many times coincides with the window’s border. Renditions for scroll bar sections may be modified with the routines U_REND, U_MODREND, or U_EDITREND.
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Scroll Bar Characteristics |
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Description |
Initial setting |
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Scroll to “more” upwards |
^ |
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Scroll to “more” downwards |
v |
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Scroll to “more” to the left |
< |
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Scroll to “more” to the right |
> |
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Screen position already at the top edge; there is “no more” upwards |
^ |
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Screen position already at the bottom edge; there is “no more” downwards |
v |
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Screen position already at the left edge; there is “no more” to the left |
< |
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Screen position already at the right edge; there is “no more” to the right |
> |
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Vertical pointer |
— |
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Horizontal pointer |
| |
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Horizontal area fill |
— |
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Vertical area fill |
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Examples
The following example sets the “more” upwards and “more” downwards scroll bar characters to ‘+’ and sets the “no more” characters and “fill” characters to blank. The other characters are set to the default values.
chars ,a12 chars = "++<> -| " xcall u_charsb(D_LOAD, chars)
