Visual Basic.NET How to Program (PDF)

564 Graphical User Interfaces Concepts: Part 2 Chapter 13
TabControl properties
and events Description / Delegate and Event Arguments
Common Properties
ImageList Specifies images to be displayed on tabs.
ItemSize Specifies tab size.
MultiLine Indicates whether multiple rows of tabs can be displayed.
SelectedIndex Index of selected TabPage.
SelectedTab The selected TabPage.
TabCount Returns the number of tab pages.
TabPages Collection of TabPages within the TabControl.
Common Event (Delegate EventHandler, event arguments EventArgs)
SelectedIndexChanged Generated when SelectedIndex changes (i.e., another
TabPage is selected).
Fig. 13.29 TabControl properties and events.
1 ' Fig. 13.30: UsingTabs.vb
2 ' Using TabControl to display various font settings.
3
4 Imports System.Windows.Forms
5
6 Public Class FrmTabs
7 Inherits Form
8
9 ' output label reflects text changes
10 Friend WithEvents lblDisplay As Label
11
12 ' table control containing table pages tbpColor,
13 ' tbpSize, tbpMessage and tbpAbout
14 Friend WithEvents tbcTextOptions As TabControl
15
16 ' table page containing color options
17 Friend WithEvents tbpColor As TabPage
18 Friend WithEvents radBlack As RadioButton
19 Friend WithEvents radRed As RadioButton
20 Friend WithEvents radGreen As RadioButton
21
22 ' table page containing font size options
23 Friend WithEvents tbpSize As TabPage
24 Friend WithEvents radSize12 As RadioButton
25 Friend WithEvents radSize16 As RadioButton
26 Friend WithEvents radSize20 As RadioButton
27
28 ' table page containing text display options
29 Friend WithEvents tbpMessage As TabPage
Fig. 13.30 TabControl used to display various font settings (part 1 of 3).