Slider.Tracking (gb.qt4)
Property Tracking As Boolean
Indicates that the
Slider emits
Change events continuously when it is moved, not just the mouse button is released.
Example
'Copy the code into a Graphical Application and run it
Slider1 As Slider
Label1 As Label
Panel1 As Panel
Panel2 As Panel
Button1 As Button
HBox1 As HBox
Public Sub Form_Open()
With Me
.Height = 130
.Width = 330
.Arrangement = Arrange.Vertical
.Padding = 5
.Title = "Move the slider.."
End With
Slider1 = New Slider(Me) As "Slider1"
Slider1.Height = 28
Label1 = New Label(Me) As "Label1"
With Label1
.Height = 28
.Alignment = Align.Center
.Font.Bold = True
.Font.Size = 14
End With
Panel1 = New Panel(Me)
Panel1.Expand = True
HBox1 = New HBox(Me)
HBox1.Height = 28
Panel2 = New Panel(HBox1)
Panel2.Expand = True
Button1 = New Button(HBox1) As "Button1"
With Button1
.Height = 28
.Width = 133
.Text = "&Tracking on"
End With
Slider1_Change
End
Public Sub Slider1_Change()
Label1.Text = Slider1.Value
End
Public Sub Button1_Click()
If Button1.Text = "&Tracking on" Then
Button1.Text = "&Tracking off"
Slider1.Tracking = False
Else
Button1.Text = "&Tracking on"
Slider1.Tracking = True
Endif
End