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 Inherits System.Windows.Forms.Form Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim pos 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 Sub Timer2_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 If pos.X > 100 Or pos.Y > 50 Then Me.DesktopLocation = pos Else Timer1.Enabled = True Timer2.Enabled = False End If End Sub 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 Class Form1 Inherits System.Windows.Forms.Form Dim tps As Integer Dim bol As Boolean 进入TrackBar1_Scroll事件 Private Sub TrackBar1_Scroll(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar1.Scroll Me.Opacity = TrackBar1.Value / 100 Label1.Text = "窗体透明度:" & CStr(Me.Opacity * 100) & "%" End Sub 进入Timer1_Tick事件 Private Sub Timer1_Tick(ByVal sender As 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 End Sub 进入Form1_Load事件 Private Sub Form1_Load(ByVal sender As System.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 As System.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 End If 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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vb.net2008 启动画面专用类 Namespace My Protected Overrides Sub OnCreateMainForm() Try '起動画面を選択する Catch ex As Exception Me.MainForm = Global.GRP.メインメニュー_Gif |
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