в 16:40, 26 мая 2010

2010-05-26T16:40:30Z

Admin: 1 версия

2010-05-26T12:56:26Z

1 версия

Новая страница

==Applications.DoEvents==

<source lang="vbnet">Imports System.Windows.Forms
public class ApplicationDoEvent
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Private Sub btnGo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGo.Click
Me.Cursor = Cursors.WaitCursor
tmrLongTask.Enabled = True
btnGo.Enabled = False
Application.DoEvents()
End Sub
Private Sub tmrLongTask_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tmrLongTask.Tick
tmrLongTask.Enabled = False
Me.Cursor = Cursors.Default
btnGo.Enabled = True
End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
Inherits System.Windows.Forms.Form
"Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
"Required by the Windows Form Designer
Private components As System.ruponentModel.IContainer
"NOTE: The following procedure is required by the Windows Form Designer
"It can be modified using the Windows Form Designer.
"Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.ruponents = New System.ruponentModel.Container
Me.btnGo = New System.Windows.Forms.Button
Me.tmrLongTask = New System.Windows.Forms.Timer(Me.ruponents)
Me.SuspendLayout()
"
"btnGo
"
Me.btnGo.Location = New System.Drawing.Point(16, 16)
Me.btnGo.Name = "btnGo"
Me.btnGo.Size = New System.Drawing.Size(48, 23)
Me.btnGo.TabIndex = 0
Me.btnGo.Text = "Go"
"
"tmrLongTask
"
Me.tmrLongTask.Interval = 3000
"
"Form1
"
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.Add(Me.btnGo)
Me.Name = "Form1"
Me.Text = "UseWaitCursor"
Me.ResumeLayout(False)
End Sub
Friend WithEvents btnGo As System.Windows.Forms.Button
Friend WithEvents tmrLongTask As System.Windows.Forms.Timer
End Class</source>

==ProgressBars and Application.DoEvents==

<source lang="vbnet">Option Strict On
imports System
imports System.Drawing
imports System.Windows.Forms
public class ProgressBars : inherits Form
dim pb as ProgressBar
dim lbl as Label
public sub New()
Size = new Size(300,200)
dim btn as new Button()
btn.Parent = me
btn.Text = "&Start"
btn.Location = new Point(0,0)
AddHandler btn.Click, AddressOf btn_OnClick
lbl = new Label()
lbl.Parent = me
lbl.Size = new Size(100,23)
lbl.Location = new Point(0,25)
lbl.BorderStyle = BorderStyle.FixedSingle
lbl.TextAlign = ContentAlignment.MiddleCenter
lbl.Text = ""
pb = new ProgressBar()
pb.Parent = me
pb.Location = new Point(0, 70)
pb.Size = new Size(400, 20)
pb.Minimum = 0 " the default value
pb.Maximum = 100 " the default value
end sub " close for constructor
private sub btn_OnClick(ByVal sender as object,ByVal e as EventArgs)
dim cntr as integer = 0
pb.Value = 0
pb.Step = 1
for i as integer = 0 to 100000
cntr = cntr + 1
if cntr mod 100 = 0 then
lbl.Text = cntr.ToString()
pb.PerformStep()
Application.DoEvents()
System.Threading.Thread.Sleep(40)
end if
next
end sub
public shared sub Main()
Application.Run(new ProgressBars())
end sub
end class</source>

← Предыдущая	Версия 16:40, 26 мая 2010
(нет различий)

VB.Net Tutorial/GUI Applications/Applications - История изменений

в 16:40, 26 мая 2010

Admin: 1 версия