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VB.NET 2008窗体应用技巧

2014-02-05 12:11 393 查看
打开Visual Studio 2008在文件 (File) 菜单上,单击新建项目 (New Project)。在新建项目 (New Project) 对话框的模板 (Templates) 窗格中,单击 Windows 应用程序(Windows Application)。 单击确定 (OK)

窗体应用技巧一,创建浮动窗体。

创建新工程后,选择Form1窗体,添加 Timer1和Timer2控件。为窗体选择一个好看的背景,当然你也可以使用系统默认的背景。

进入代 码编辑器,输入代码:

Public Class Form1

InheritsSystem.Windows.Forms.Form

Private Sub Form1_Load(ByVal sender AsSystem.Object,

ByVal e As System.EventArgs) Handles MyBase.Load

Dimpos As Point = New Point(100, 50) '设置窗体初始位置

Me.DesktopLocation =pos

Timer1.Interval = 10 '设置Timer的值

Timer1.Enabled = True

Timer2.Interval = 10

Timer2.Enabled = False

End Sub

进入Timer1_Tick事件

Private Sub Timer1_Tick(ByVal sender As System.Object,ByVal e As System.EventArgs)

Handles Timer1.Tick

Dim pos As Point =New Point(Me.DesktopLocation.X 2, Me.DesktopLocation.Y 1)

'窗体 左上方横坐标的timer1加

If pos.X < 600 Or pos.Y < 400 Then

Me.DesktopLocation = pos

Else

Timer1.Enabled = False

Timer2.Enabled =True

End If

End Sub

进入Timer2_Tick事件

Private SubTimer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs)

Handles Timer2.Tick

Dim pos As Point = New Point(Me.DesktopLocation.X - 2,Me.DesktopLocation.Y - 1)

'窗体的左上方横坐标随着timer2减一

Ifpos.X > 100 Or pos.Y > 50 Then

Me.DesktopLocation = pos

Else

Timer1.Enabled = True

Timer2.Enabled = False

End If

EndSub

创建完成后我们来运行程序测试一下,测试成功,程序在屏幕中不断地来回走动了。窗体应用技巧二,创建透明的窗体。

创建新工程后,选择Form1窗体,添加Label1、 TrackBar1、Timer1控件。为了突出效果为窗体选择一个好看的背景。

相关的属性设置如下:

TrackBar1 Value属性:

TickFrequency: 属性:

Maximum属性: 100

10

100

Label1 Text属性: 选择窗体的透明度:

Timer1 Interval属性: 100

进入代码编辑器,输入代码:

首先进行声明:

Public ClassForm1

Inherits System.Windows.Forms.Form

Dim tps As Integer

Dim bol AsBoolean

进入TrackBar1_Scroll事件

Private Sub TrackBar1_Scroll (ByVal sender As Object,

ByVal e As System.EventArgs) HandlesTrackBar1.Scroll

Me.Opacity = TrackBar1.Value / 100

Label1.Text = "窗 体透明度:" & CStr(Me.Opacity * 100) & ""

EndSub

进入Timer1_Tick事件

Private Sub Timer1_Tick(ByVal senderAs Object,

ByVal e As System.EventArgs) Handles Timer1.Tick

If bol= False Then

tps = tps 1

Me.Opacity = tps / 100

If Me.Opacity>= 1 Then

Timer1.Enabled = False

bol = True

End If

Else

tps = tps - 1

Me.Opacity = tps / 100

If Me.Opacity <= 0 Then

Timer1.Enabled = False

bol = False

End If

End If

EndSub

进入Form1_Load事件

Private Sub Form1_Load(ByVal sender AsSystem.Object,

ByVal e As System.EventArgs) Handles MyBase.Load

Timer1.Enabled = True

End Sub

进入Form1_Closing事件

Private Sub Form1_Closing(ByVal sender As Object,

ByVal e AsSystem.ComponentModel.CancelEventArgs) Handles MyBase.Closing

Timer1.Enabled =True

If MsgBox("你确实要关闭窗体吗?", MsgBoxStyle.OkCancel) =MsgBoxResult.Ok Then

e.Cancel = False

Else

Timer1.Enabled = False

Me.Opacity = 1

tps = 100

bol = True

e.Cancel = True

EndIf

End Sub

创建完成后我们来运行程序测试一下,测试成功,程序窗体是不是变 得透明了,通过调节滚动条我们甚至可以使得窗体消失达到完全隐形的目的。这是不是很神奇呢?

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