本文整理匯總了VB.NET中System.Windows.Forms.CommonDialog.HelpRequest事件的典型用法代碼示例。如果您正苦於以下問題：VB.NET CommonDialog.HelpRequest事件的具體用法？VB.NET CommonDialog.HelpRequest怎麽用？VB.NET CommonDialog.HelpRequest使用的例子？那麽, 這裏精選的事件代碼示例或許可以為您提供幫助。您也可以進一步了解該事件所在類System.Windows.Forms.CommonDialog的用法示例。
在下文中一共展示了CommonDialog.HelpRequest事件的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: InitializeColorDialog
' This method initializes ColorDialog1 to allow any colors,
' and combination colors on systems with 256 colors or less,
' but will not allow the user to set custom colors. The
' dialog will contain the help button.
Private Sub InitializeColorDialog()
Me.ColorDialog1 = New System.Windows.Forms.ColorDialog
Me.ColorDialog1.AllowFullOpen = False
Me.ColorDialog1.AnyColor = True
Me.ColorDialog1.SolidColorOnly = False
Me.ColorDialog1.ShowHelp = True
End Sub
' This method opens the dialog and checks the DialogResult value.
' If the result is OK, the text box's background color will be changed
' to the user-selected color.
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
Dim result As DialogResult = ColorDialog1.ShowDialog()
If (result.Equals(DialogResult.OK)) Then
TextBox1.BackColor = ColorDialog1.Color
End If
End Sub
' This method is called when the HelpRequest event is raised,
'which occurs when the user clicks the Help button on the ColorDialog object.
Private Sub ColorDialog1_HelpRequest(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles ColorDialog1.HelpRequest
MessageBox.Show("Please select a color by clicking it." _
& "This will change the BackColor property of the TextBox.")
End Sub