TrackBar Interface Reference

A trackbar is a control that contains a slider and optional tick marks. More...

Inheritance diagram for TrackBar:

Collaboration diagram for TrackBar:

List of all members.

Public Member Functions
	SelectAll (void)
	Selects all.
	ClearSelection (void)
	Clears the selection.
Properties
VARIANT_BOOL RW	Vertical []
	Specifies that the control has vertical orientation.
LONG RW	TickMarks []
	Specifies whether the TrackBar displays the tick marks.
ULONG RW	SmallChange []
	Specifies the amount by which the TrackBar's value is changed when the user pressed the up, down, left or right button.
ULONG RW	LargeChange []
	Specifies the amount by which the TrackBar's value is changed when the user pressed the page up or page down button.
ULONG RW	ThumbLength []
	Specifies the size of the slider.
ULONG RW	TickFrequency []
	Specifies the frequency for the tick marks.
VARIANT_BOOL RW	EnableSelRange []
	Enables the selection range.
LONG RW	SelStart []
	Specifies the start of the selection range.
LONG RW	SelEnd []
	Specifies the end of the selection range.

---

Detailed Description

A trackbar is a control that contains a slider and optional tick marks.

The control allows the user to select value from a range.

When the control's value changes, the OnChange event occur.

See also the method CreateTrackBar of the Frame.

Example:

o = new ActiveXObject("Scripting.WindowSystemObject")
o.EnableVisualStyles = true

f = o.CreateForm(0,0,0,0)

f.Text = "WSO"
f.ClientWidth = 320
f.ClientHeight = 80
f.CenterControl()

TrackBar = f.CreateTrackBar(10,10,300,35)
TrackBar.Max = 300
TrackBar.Min = 100
TrackBar.Position = 230

f.Show()

o.Run()

Result:

---

Member Function Documentation

ClearSelection

(

void

)

Clears the selection.

SelectAll

(

void

)

Selects all.

---

Property Documentation

VARIANT_BOOL RW EnableSelRange

Enables the selection range.

ULONG RW LargeChange

Specifies the amount by which the TrackBar's value is changed when the user pressed the page up or page down button.

LONG RW SelEnd

Specifies the end of the selection range.

LONG RW SelStart

Specifies the start of the selection range.

ULONG RW SmallChange

Specifies the amount by which the TrackBar's value is changed when the user pressed the up, down, left or right button.

ULONG RW ThumbLength

Specifies the size of the slider.

ULONG RW TickFrequency

Specifies the frequency for the tick marks.

If the property is 0 then the tick marks hided.

LONG RW TickMarks

Specifies whether the TrackBar displays the tick marks.

This parameter can be one of the following values:

• TM_NONE No tick marks.
• TM_LEFT, TM_TOP Tick marks on the left or on the top.
• TM_RIGHT, TM_BOTTOM Tick marks on the right or on the bottom.
• TM_BOTH Tick marks on the all sides.

VARIANT_BOOL RW Vertical

Specifies that the control has vertical orientation.

---