Common Properties

TITLE

Scroll bars do not have titles.

VALUE

A scroll bar has an integer value, which represents the slider's position in the control. The range of values is set by the properties MIN-VAL, MAX-VAL, and PAGE-SIZE. Setting the value outside of the legal range has an undefined effect.

SIZE

SIZE and LINES describe the area of the scroll bar in window cells. If SIZE is omitted, the width of a vertical scroll bar is the standard width of the host system's scroll bar. A horizontal scroll bar extends to the right edge of the window when the scroll bar is created. If LINES is omitted, the system makes corresponding calculations — a horizontal scroll bar is standard height, and a vertical scroll bar extends to the bottom edge.

COLOR

Scroll bars always use the system's colors.

ATW-CSS-CLASS

This property enables you to apply CSS styles to the control when the program is run through AcuToWeb. The value of ATW-CSS-CLASS should represent a corresponding class in the current theme (that is, a .class-name entry in the cascading style sheet) deployed when you run your program through AcuToWeb. This property can be applied to more than one control in your program.

If both the ATW-CSS-CLASS and ATW-CSS-ID properties are specified for this control, and both correspond to the same style in the style sheet, the style specified by ATW-CSS-ID takes precedence.

See Cascading Style Sheet Syntax for more information about additional in-built styles in AcuToWeb.

ATW-CSS-ID

This property enables you to apply CSS styles to the control when the program is run through AcuToWeb. The value of ATW-CSS-ID should represent a corresponding ID in the current theme (that is, a #class-name entry in the cascading style sheet) deployed when you run your program through AcuToWeb. The value of this property must be unique, and only applied to one control in your program.

If both the ATW-CSS-CLASS and ATW-CSS-ID properties are specified for this control, and both correspond to the same style in the style sheet, the style specified by ATW-CSS-ID takes precedence.

See Cascading Style Sheet Syntax for more information about additional in-built styles in AcuToWeb.

EVENT-LIST, EXCLUDE-EVENT-LIST

EVENT-LIST is an exclusive list of events that are either sent to or withheld (blocked) from the program depending on the value of EXCLUDE-EVENT-LIST. See Common Screen Options for more information.

STYLES

HORIZONTAL This style creates a horizontal scroll bar. Without this style, the scroll bar is vertical.
TRACK-THUMB This style causes the scroll bar to generate MSG-SB-THUMBTRACK messages while the slider is moved by the user. Without this style, the messages are suppressed. Use this style if you want to update the screen while the user is moving the slider (as opposed to immediately after a new slider position is selected).

To minimize network traffic and optimize performance, MSG-SB-THUMBTRACK events are generated differently for thin client applications. With thin client applications, when the slider is moved by the user, a single MSG-SB-THUMBTRACK message is sent immediately before the MSG-SB-THUMB message, and the scroll bar is automatically updated.

Parent topic: Scroll Bar
Related concepts
Cascading Style Sheet Syntax