關(guān)于vb點(diǎn)虐 設(shè)計(jì)數(shù)字時(shí)鐘的信息

VB程序設(shè)計(jì)怎么做數(shù)字時(shí)鐘

1、添加一個(gè)“l(fā)abel控件”命名為label

創(chuàng)新互聯(lián)長(zhǎng)期為成百上千家客戶提供的網(wǎng)站建設(shè)服務(wù)，團(tuán)隊(duì)從業(yè)經(jīng)驗(yàn)10年，關(guān)注不同地域、不同群體，并針對(duì)不同對(duì)象提供差異化的產(chǎn)品和服務(wù)；打造開(kāi)放共贏平臺(tái)，與合作伙伴共同營(yíng)造健康的互聯(lián)網(wǎng)生態(tài)環(huán)境。為武侯企業(yè)提供專業(yè)的網(wǎng)站設(shè)計(jì)、做網(wǎng)站，武侯網(wǎng)站改版等技術(shù)服務(wù)。擁有10余年豐富建站經(jīng)驗(yàn)和眾多成功案例,為您定制開(kāi)發(fā)。

2、添加一個(gè)“timer控件”命名為timer1

3、設(shè)置“timer1”的“Interval屬性”為1000

使用到的代碼：

Dim?Hour?As?Integer?'小時(shí)

Dim?Min?As?Integer??'分鐘

Dim?Sec?As?Integer?'秒

Private?Sub?Form_Load()

Hour?=?0

Min?=?0

Sec?=?0

Label1.Caption?=?"00?:?00?:?00"

End?Sub

Private?Sub?Timer1_Timer()

Dim?strHour?As?String

Dim?strMin?As?String

Dim?strSec?As?String

Sec?=?Sec?+?1

If?Sec?=?60?Then

Sec?=?0

Min?=?Min?+?1

If?Min?=?60?Then

Min?=?0

Hour?=?Hour?+?1

If?Hour?=?24?Then

Hour?=?0

End?If

End?If

End?If

If?Hour??10?Then

strHour?=?"0"??Hour

Else

strHour?=?Hour

End?If

If?Min??10?Then

strMin?=?"0"??Min

Else

strMin?=?Min

End?If

If?Sec??10?Then

strSec?=?"0"??Sec

Else

strSec?=?Sec

End?If

Label1.Caption?=?strHour??"?:?"??strMin??"?:?"??strSec

End?Sub

vb點(diǎn)虐 開(kāi)發(fā)簡(jiǎn)單的時(shí)鐘程序？？高手救救我！

就

是

這

個(gè)

了

！

Hand類的代碼：

Public MustInherit Class Hand

Protected gp As GraphicsPath = New GraphicsPath()

Protected gpBase As GraphicsPath = Nothing

Protected midX As Integer = 150 ‘默認(rèn)的窗體

Protected midY As Integer = 150 ‘中心位置

‘構(gòu)造器，得到窗體中心位置

Public Sub New(ByVal theForm As Form1)

midX = (theForm.ClientRectangle.Left + theForm.ClientRectangle.Right) / 2

midY = (theForm.ClientRectangle.Top + theForm.ClientRectangle.Bottom) / 2

End Sub

MustOverride Sub Transform(ByVal d As DateTime)

‘繪制指針路徑

Overridable Sub Draw(ByVal g As Graphics)

Dim aPen As Pen = New Pen(Brushes.Black, 4F)

g.DrawPath(aPen, gp)

g.FillPath(Brushes.Black, gp)

aPen.Dispose()

End Sub

‘使用矩陣實(shí)現(xiàn)路徑（gp）的旋轉(zhuǎn)

Public Sub Rotate(ByVal angle As Double)

gp = CType(gpBase.Clone(), GraphicsPath)

Dim mTransform As Matrix = New Matrix()

mTransform.RotateAt(CType(angle,Single),NewPointF(midX,midY))

gp.Transform(mTransform)

End Sub

End Class

為了節(jié)省篇幅，上面的代碼省略了引入命名空間的語(yǔ)句。

下面是分針（MinuteHand）類的定義：

Public Class MinuteHand

Inherits Hand

‘構(gòu)造器，生成繪制分針的路徑（gp）

Public Sub New(ByVal myForm As Form1)

MyBase.New(myForm)

gp.AddLine(midX, midY, midX, 45)

gp.AddLine(midX, 45, midX - 3, 50)

gp.AddLine(midX - 3, 50, midX + 3, 50)

gp.AddLine(midX + 3, 50, midX, 45)

gpBase = CType(gp.Clone(), GraphicsPath)

End Sub

‘Transform方法取得系統(tǒng)當(dāng)前時(shí)間，并旋轉(zhuǎn)時(shí)鐘指針。

Public Overrides Sub Transform(ByVal d As DateTime)

Dim minuteTime As Double = (CDbl(d.Minute) + CDbl(d.Second / 60))

Dim angle As Double = (CDbl(minuteTime) / 60) * 360

Rotate(angle)

End Sub

End Class

對(duì)所有的指針旋轉(zhuǎn)的方法都是相同的，因此在基類中實(shí)現(xiàn)。由于時(shí)針和秒針的實(shí)現(xiàn)與分針相似，所不同者，只在于構(gòu)造器中繪制的指針路徑不同和Transform方法中轉(zhuǎn)動(dòng)的角度不同，在這里就不在贅述了。

另外還需要提一下的是畫(huà)時(shí)鐘表面的代碼，時(shí)鐘表面用ClockFace類來(lái)實(shí)現(xiàn)。這個(gè)類首先畫(huà)一個(gè)圓代表時(shí)鐘，然后畫(huà)上米老鼠的圖案，最后在相應(yīng)的位置畫(huà)上數(shù)字1～12代表12個(gè)小時(shí)。

Public Sub Draw(ByVal g As Graphics)

DrawClockFace(g)

DrawImage(g)

DrawNumbers(g)

DrawPin(g)

End Sub

下面是ClockFace類的屬性：

Private ClockRectangle As Rectangle

Private ClockFont As Font = New Font("Arial", 12)

Private midPoint As Point

Private ClockImage As Bitmap

Private Const IMAGEX As Integer = 50

Private Const IMAGEY As Integer = 50

DrawClockFace方法用來(lái)畫(huà)時(shí)鐘表面：

Private Sub DrawClockFace(ByVal g As Graphics)

g.FillEllipse(Brushes.White, ClockRectangle.Left + 10, ClockRectangle.Top + 10, ClockRectangle.Width - 20, ClockRectangle.Height - 20)

g.DrawEllipse(Pens.Black, ClockRectangle.Left + 10, ClockRectangle.Top + 10, ClockRectangle.Width - 20, ClockRectangle.Height - 20)

End Sub

然后用Graphics對(duì)象的DrawImage方法畫(huà)出米老鼠的圖片：

Private Sub DrawImage(ByVal g As Graphics)

Dim nWidth As Integer = ClockImage.Width

Dim nHeight As Integer = ClockImage.Height

Dim destRect As Rectangle = New Rectangle(midPoint.X - IMAGEX / 2, midPoint.Y - IMAGEY / 2, IMAGEX, IMAGEY)

g.DrawImage(ClockImage, destRect)

End Sub

數(shù)字在時(shí)鐘上的位置是用sin和cos函數(shù)計(jì)算的：

Private Sub DrawNumbers(ByVal g As Graphics)

Dim count As Integer = 1

Dim a As Double

For a = 0 To 2 * Math.PI Step 2 * Math.PI / 12

Dim x As Double = (ClockRectangle.Width - 70) / 2 * Math.Cos(a - Math.PI / 3) + (ClockRectangle.Width - 70) / 2 + 25

Dim y As Double = (ClockRectangle.Width - 70) / 2 * Math.Sin(a - Math.PI / 3) + (ClockRectangle.Width - 70) / 2 + 20

g.DrawString(Convert.ToString(count), ClockFont, Brushes.Black, CType(x, Single), CType(y, Single), New StringFormat())

count += 1

Next

End Sub

最后是窗體文件（Form1.vb）:

Public Class Form1

Inherits System.Windows.Forms.Form

Private MyMinuteHand As MinuteHand

Private MyHourHand As HourHand

Private MySecondHand As SecondHand

Private TheClockFace As ClockFace

Private FirstTick As Boolean = False

‘在窗體的OnPaint事件中取得Graphics對(duì)象

Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)

If (FirstTick = False) Then Exit Sub

Dim g As Graphics = e.Graphics

TheClockFace.Draw(g)

MyHourHand.Draw(g)

MyMinuteHand.Draw(g)

MySecondHand.Draw(g)

TheClockFace.DrawPin(g)

End Sub

‘計(jì)時(shí)器事件

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

MySecondHand.Transform(DateTime.Now)

MyHourHand.Transform(DateTime.Now)

MyMinuteHand.Transform(DateTime.Now)

FirstTick = True

Invalidate()

vb中設(shè)置一個(gè)數(shù)字時(shí)鐘界面，每改變一秒就更新一次，求程序。

Private?Sub?Form_Load()

Me.Caption?=?"數(shù)字時(shí)鐘"

Timer1.Interval?=?1000

Timer1.Enabled?=?True

End?Sub

Private?Sub?Timer1_Timer()

Label1.Caption?=?Format(Now,?"yyyy年m月d日")

Label2.Caption?=?Format(Now,?"hh時(shí)nn分ss秒")

End?Sub

網(wǎng)站標(biāo)題：關(guān)于vb點(diǎn)虐 設(shè)計(jì)數(shù)字時(shí)鐘的信息
鏈接URL：http://www.muchs.cn/article10/ddihpgo.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供定制網(wǎng)站、網(wǎng)站改版、域名注冊(cè)、企業(yè)建站、建站公司、動(dòng)態(tài)網(wǎng)站

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來(lái)源： 創(chuàng)新互聯(lián)