vb.net开发仪表 vbnet showdialog

wince下如何用vb.net画圆弧，需要做一个仪表盘，圆环形、分段。但WinCE中只支持画整圆，请各位帮忙，谢谢！

思路错误，应该是先制作好仪表盘图片，指针图片，使用代码来切换图片

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谁帮我编个程序,VB的仪表测量

代码未考虑校验和：

Option Explicit

Dim strdata As String

Dim bytInput() As Byte

Dim sj(1) As Double

Dim sjData(1) As String

Dim xswz As Integer

Dim xswz1 As Integer

Private Sub Command1_Click()

Timer1.Enabled = True

End Sub

Private Sub MsComm1_OnComm()

Dim intInputLen As Integer

Select Case MSComm1.CommEvent

Case comEvReceive

'接收代码

While MSComm1.InBufferCount

intInputLen = MSComm1.InBufferCount

ReDim bytInput(intInputLen)

bytInput = MSComm1.Input

jieshou

'数据处理

If Mid(strdata, 1, 2) = "AA" And Len(strdata) = 32 Then

Dim j As Integer

Dim binsj As Integer

'For j = 1 To Len(strdata) - 2 Step 2

'binsj = binsj + Val("H" Mid(strdata, j, 2))

'Next

'Print Hex(binsj Mod 256)

Text1 = strdata

xswz = Val("H" Mid(strdata, 15, 2))

xswz1 = Val("H" Mid(strdata, 29, 2))

sj(0) = Val(Mid(strdata, 5, 10)) / (10 ^ xswz)

sj(1) = Val(Mid(strdata, 19, 10)) / (10 ^ xswz1)

sjData(0) = Format(sj(0), "0.0000000")

sjData(1) = Format(sj(1), "0.0000000")

If Mid(strdata, 4, 1) = "0" Then

Text2 = sjData(0)

Else

Text2 = "-" sjData(0)

End If

If Mid(strdata, 18, 1) = "0" Then

Text3 = sjData(1)

Else

Text3 = "-" sjData(1)

End If

Timer1.Enabled = False

strdata = ""

ElseIf Mid(strdata, 1, 2) "AA" Then

strdata = ""

End If

Wend

End Select

End Sub

Public Function jieshou() '接收数据处理为16进制

Dim i As Integer

For i = 0 To UBound(bytInput)

If Len(Hex(bytInput(i))) = 1 Then

strdata = strdata "0" Hex(bytInput(i))

Else

strdata = strdata Hex(bytInput(i))

End If

Next

End Function

Private Sub Form_Load()

MSComm1.Settings = "2400,n,8,1"

MSComm1.CommPort = 1

MSComm1.InputMode = comInputModeBinary

MSComm1.RThreshold = 1

MSComm1.SThreshold = 0

MSComm1.PortOpen = True

Timer1 = 200

Timer1.Enabled = False

End Sub

Private Sub Timer1_Timer()

Dim send(0) As Byte

send(0) = H55

MSComm1.Output = send

End Sub

VB.NET如何让仪表指针绕某点旋转

你把问题想简单点，直接在PANEL空间上使用GD+画指针就行了。算出两点划线还不容易么？用图片的话需要旋转，而且锯齿非常严重@！

求用VB编写一个程序来读取仪表的温度，压力和流量

如果使用串口通信,可以使用com控件,对串口进行读写操作。关键是要有和仪表通信的接口，另外还要把仪表的数字量信息读上来。可能还要进行A/D转换。