Presentation OnTopic: Timer, ComboBox,Rich TextBox, Slider

Contents

Timer Contol ComboboxRich TextboxSlider

Timer Control

Timer Control Works like a stopwatch or alarm clockTimer control counts repeatedly as long as enabled

property is set to trueInterval: It specifies the interval between Timer events

in milliseconds

Timer Control Application

Coding

Dim counter As Integer Private Sub cmdend_Click() Timer1.Enabled = False End Sub

Private Sub cmdstart_Click() Timer1.Enabled = True End Sub

Private Sub Timer1_Timer() counter = counter + 1 If counter = 95 Then counter = 1 End If If counter = 1 Then Shape1.FillColor = vbRed Shape2.FillColor = vbWhite Shape3.FillColor = vbWhite End If

If counter = 45 Then Shape1.FillColor = vbWhite Shape2.FillColor = vbYellow Shape3.FillColor = vbWhite End If If counter = 50 Then Shape1.FillColor = vbWhite Shape2.FillColor = vbWhite Shape3.FillColor = vbGreen End If End Sub

Output

Combo Box Control

Features of Text box and List box It is used to present list to the UserThis control allow the user to select an item either by

typing into the Combo box, or by selecting it from the list It contains an edit field

Combo Box Styles

Three Styles Combo Box The drop down combo Box The Simple combo Box The drop down list

Drop Down List BoxStyle 2

Drop down Combo BoxStyle 0

Simple Combo BoxStyle 1

Form Design

Combo Box Application

Coding Dim a, b Private Sub cmdshowdate_Click() lblcombo.Caption = Combo2.Text + " " + Combo3.Text + "," + Combo4.Text End Sub

Private Sub Combo1_click() If Combo1.ListIndex = 0 Then lblcombo.ForeColor = vbRed End If If Combo1.ListIndex = 1 Then lblcombo.ForeColor = vbGreen End If If Combo1.ListIndex = 2 Then lblcombo.ForeColor = vbBlue End If End Sub

Conti…

Private Sub Form_Load() Combo1.AddItem "Red" Combo1.AddItem "Green" Combo1.AddItem "Blue" a = 0 Do While a < 31 a = a + 1 Combo3.AddItem a Loop

b = 1900 Do While b < 2012 b = b + 1 Combo4.AddItem b Loop

Conti…

Combo2.AddItem "Jan" Combo2.AddItem "Feb" Combo2.AddItem "March" Combo2.AddItem "April" Combo2.AddItem "May" Combo2.AddItem "June" Combo2.AddItem "july" Combo2.AddItem "August" Combo2.AddItem "September" Combo2.AddItem "October" Combo2.AddItem "November" Combo2.AddItem "December" End Sub

Output

Rich Text Box

The Rich Text Box Control allows the user to enter and edit text while also providing more advanced formatting features than the conventional TextBox control.

Syntax:

RichTextBox

How to Open Rich Text Box

Form Design

Conti…

Private Sub cmdrtbbox_Click() rtb1.Text = "The rich text box support underlines, Bold

and Italic text." rtb1.SelStart = rtb1.Find("underlines") rtb1.Span ("underlines") rtb1.SelUnderline = True

rtb1.SelStart = 0 rtb1.SelStart = rtb1.Find("Bold") rtb1.Span ("Bold") rtb1.SelBold = True

Conti…

rtb1.SelStart = 0 rtb1.SelStart = rtb1.Find("Italic") rtb1.Span ("Italic") rtb1.SelItalic = True rtb1.SelStart = 0 rtb1.SelStart = rtb1.Find("underlines") rtb1.Span ("underlines") rtb1.SelFontName = "Arial" rtb1.SelFontSize = 18End Sub

Output

Slider Control

To Set the value of a point on a graphTo select the range of number to be passed into the arrayTo resize a form, field or other graphic object

How to open a slider

Operations using Slider

ValueMin, MaxTickfrequencyTickstyleSmallchangeLargespaceSelect rangeSelstartSellength

Selecting a Slider’s Orientation

ccOrientationhorizontal (value 0, the default) Orients the slider horizontally

ccOrientationvertical (value1) Orients the slider vertically

Slider1.orientation=ccorientationvertical

Setting a Slider’s Range

Slider1.Max=90Slider1.Min=50

Handling Slider Events

Private Sub Form_Load()Slider1.Max = 250Slider1.Min = 0Slider1.LargeChange = 5Slider1.TickFrequency = 25End Sub

Private Sub Slider1_Change() txt1.Text = "slider position" & Str(Slider1.Value)End Sub

Conti…

Private Sub Form_Load() Slider1.Max = 100 Slider1.Min = 0 Slider1.LargeChange = 5 Slider1.TickFrequency = 10 Slider1.TickStyle = sldNoTicks End Sub

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