%sl - Slider

Purpose

Syntax

winio@('%Nsl[option]', value, min, max)
double precision min, max (input)
double precision value (input/output)

Modifiers

Caret (^) - call-back is called repeatedly as the user moves the slider or when an arrow key is pressed.

Question mark (?) - a help string is supplied.

Description

N is mandatory and sets the length of the control in average character units.

value is the current value represented by the slider in the range min to max. This value can also be accessed by a call-back function whilst the slider is being moved.

The following options can be used:

vertical	Provides a vertical bar.
horizontal	Provides a horizontal bar (the default).
ms_style	Uses a Microsoft trackbar control and takes INTEGER rather than DOUBLE PRECISON arguments.
The following options can also be used with the INTEGER version of %sl and imply [ms_style]. The resulting Microsoft style is shown in brackets.
both	The trackbar control displays tick marks on both sides of the control, top and bottom for a horizontal bar, left and right for a vertical bar (TBS_BOTH).
top_or_left	A horizontal bar has tick marks on top. A vertical bar has tick marks to the left Otherwise tick marks are bottom (when horizontal) or right (when vertical). (TBS_TOP or TBS_LEFT)
no_ticks	No tick marks are displayed
auto_ticks	The bar has a tick mark for each increment in its range of values (TBS_AUTOTICKS)
tick_frequency=v	v is an integer and the bar has tick marks with this frequency
thumb_length=v	v is an integer giving the pixel length of the slider (TBS_FIXEDLENGTH)
selection_min=v1	The bar is displayed differently with only part of the range enabled
selection_max=v2	v1 and v2 are integers that specify the sub-range to be used. (TBS_ENABLESELRANGE)
tooltips=top	For a horizontal bar. Current value appears top right. (TBS_TOOLTIPS with TBTS_TOP)
tooltips=bottom	For a horizontal bar. Current value appears bottom right. (TBS_TOOLTIPS with TBTS_BOTTOM)
tooltips=left	For a vertical bar. Current value appears left of the slider. (TBS_TOOLTIPS with TBTS_LEFT)
tooltips=right	For a vertical bar. Current value appears right of the slider. (TBS_TOOLTIPS with TBTS_RIGHT)
border	A border is provided (WS_BORDER)

The slider will respond to the arrow keys on the keyboard.

The value returned by CLEARWIN_INFO@('LATEST_VARIABLE') can also be used with %sl.

Example

winio@('%20sl', x, 0.0D0, 10.0D0)

See also

%br (Bar)

Notes

ms_style and the associated options were introduced with FTN95 8.40.

%sl - Slider

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