System Projects Reference > The Library Controls Include Project > Use the Library Controls > Scrollbar_Vert Library Control
Scroll bar Vertical Library Control

The vertical scroll bar genie has the following parameters:

Parameter

Description

Scrollbar Name

A unique name used to identify the genie within a page.

Height

The pixel height of the control at runtime. Leave the height of the genie at design time as 100 pixels, as it will be automatically calculated at runtime.

Update on Drag

True/False (True selected by default). Determines whether the position of the scroll bar and the contents of the associated control genie is updated while the thumb is being dragged

Auto Hide

Determines whether the scroll bar will be automatically hidden when the contents of the associated control are fully displayed on screen

Allow Double Click

Determines whether the scroll bar will response to mouse double-click event

Hidden When

A user specified expression to explicitly hide the scroll bar If this is not specified, it is defaulted to FALSE (not hidden).

Initialize

Callback function that is called when the control initializes. The callback function should return either TRUE (1) for success or FALSE (0) if unsuccessful. By default, if the user specified function does not initialize, the control genie will retry the function a few time before giving up. This callback only supports the #Name keyword which represents the name assigned to the control genie.

Callback

Callback function to be called when the position of the scroll bar is updated. No particular return value is expected from this function, and it supports the following keywords in its argument list:

#Name = name assigned to the genie

#Pos = position of the scroll bar

#View = number of items for the scroll bar view (that constitutes one page of items)

#Max = maximum (total) number of items for the scroll bar

Right Mouse

Callback function to be called when the user click the right mouse button on the scroll bar. Supports the same set of substitutions as Callback.

See Also

Published June 2018