Che Guevara
06.01.2012, 03:17
Hallo,
ich versuche momentan verzweifelt, eine Trackbar in mein vb.net Projekt angezeigt zu bekommen. Ich habe ein einfaches Projekt gemacht, bei dem der Wert der Trackbar in einem Label angezeigt wird.
Public Class Form1
Private TB As TrackBar
Private WithEvents TrackB As TrackBar
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
TB = New TrackBar
With TB
.Orientation = Orientation.Vertical
.Name = "TrackBar"
.SetRange(0, 100)
.SetBounds(10, 40, 30, Me.ClientSize.Height - 50)
.SmallChange = 1
.LargeChange = 10
.TickFrequency = 10
.TickStyle = TickStyle.Both
End With
Me.Controls.Add(TB)
AddHandler TB.ValueChanged, AddressOf TrackB_ValueChanged
Label1.Text = TB.Value.ToString
End Sub
Private Sub TrackB_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackB.ValueChanged
Label1.Text = TB.Value.ToString
End Sub
End Class
Das funktioniert! Ich kann mit der Trackbar den Text vom Label1 verändern. Nun habe ich das 1:1 in mein aktuelles Projekt übernommen. Allerdings wird die Trackbar nicht angezeigt... Sie soll sich in einer Groupbox (Groupbox4) befinden.
Public Class Form1
Dim output(9) As Byte
Dim textboxtext As String
Dim crc8_string As String
Dim tmp_string As String
Private tb As TrackBar
Private WithEvents TrackB As TrackBar
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
brake_combobox.SelectedIndex = 0
battery_type_combobox.SelectedIndex = 0
cutoff_mode_combobox.SelectedIndex = 0
cutoff_threshold_combobox.SelectedIndex = 1
startup_mode_combobox.SelectedIndex = 0
timing_combobox.SelectedIndex = 0
disconnectbutton.Enabled = False
connectbutton.Enabled = True
refreshbutton.PerformClick()
baudratecombobox.SelectedIndex = 9
minthrottletextbox.Text = "990"
maxthrottletextbox.Text = "1020"
refreshbutton.PerformClick()
comcombobox.SelectedIndex = 0
tb = New TrackBar
With tb
.Orientation = Orientation.Horizontal
.Name = "TrackBar"
.SetRange(0, 255)
.SetBounds(400, 450, 300, 30)
.SmallChange = 1
.LargeChange = 10
.TickFrequency = 10
.TickStyle = TickStyle.Both
.BringToFront()
End With
Me.Controls.Add(tb)
AddHandler tb.ValueChanged, AddressOf TrackB_ValueChanged
End Sub
Private Sub Form1_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.Closing
If serialport.IsOpen() = True Then
serialport.Close()
End If
End Sub
Private Sub connectbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles connectbutton.Click
If comcombobox.SelectedItem = "" Or baudratecombobox.SelectedItem = "" Then
MsgBox("Please check your RS232 Settings!")
Else
serialport.BaudRate = Val(Str(baudratecombobox.SelectedItem()))
serialport.Open()
connectbutton.Enabled = False
disconnectbutton.Enabled = True
End If
End Sub
Private Sub disconnectbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles disconnectbutton.Click
serialport.Close()
connectbutton.Enabled = True
disconnectbutton.Enabled = False
End Sub
Private Sub refreshbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles refreshbutton.Click
Dim ports As String()
comcombobox.Items.Clear()
ports = IO.Ports.SerialPort.GetPortNames()
For Each port In ports
Try
With serialport
.PortName = port
.ReadTimeout = Int32.Parse(500)
.Open()
End With
Catch es As Exception
Finally
If serialport.IsOpen = True Then
Me.comcombobox.Items.Add(port)
End If
serialport.Close()
End Try
Next port
End Sub
Private Sub i2cstandardbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles i2cstandardbutton.Click
minthrottletextbox.Text = "990"
maxthrottletextbox.Text = "1020"
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles setalltodefaultbutton.Click
brake_combobox.SelectedIndex = 0
battery_type_combobox.SelectedIndex = 0
cutoff_mode_combobox.SelectedIndex = 0
cutoff_threshold_combobox.SelectedIndex = 1
startup_mode_combobox.SelectedIndex = 0
timing_combobox.SelectedIndex = 0
MsgBox("Default Setting set!")
End Sub
Private Sub ToolTip1_Popup(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PopupEventArgs) Handles ToolTip1.Popup
End Sub
Private Sub setthrottlebutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles setthrottlebutton.Click
End Sub
Private Sub transferbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles transferbutton.Click
output(1) = brake_combobox.SelectedIndex + 1
output(2) = battery_type_combobox.SelectedIndex + 1
output(3) = cutoff_mode_combobox.SelectedIndex + 1
output(4) = cutoff_threshold_combobox.SelectedIndex + 1
output(5) = startup_mode_combobox.SelectedIndex + 1
output(6) = timing_combobox.SelectedIndex + 1
output(7) = Val(minthrottletextbox.Text) / 10
output(8) = Val(maxthrottletextbox.Text) / 10
output(9) = Docrc8(output, 8)
If serialport.IsOpen() = True Then
serialport.Write(output, 1, 9)
End If
End Sub
Private Sub minthrottletextbox_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles minthrottletextbox.KeyPress
Select Case Asc(e.KeyChar)
Case 48 To 57, 8
' Zahlen und Backspace zulassen
Case Else
' alle anderen Eingaben unterdrücken
e.Handled = True
End Select
End Sub
Private Sub maxthrottletextbox_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles maxthrottletextbox.KeyPress
Select Case Asc(e.KeyChar)
Case 48 To 57, 8
' Zahlen und Backspace zulassen
Case Else
' alle anderen Eingaben unterdrücken
e.Handled = True
End Select
End Sub
Private Sub serialport_DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles serialport.DataReceived
tmp_string = serialport.ReadLine()
If tmp_string = "sd!" Then
transferbutton.PerformClick()
Else
textboxtext = textboxtext + tmp_string + vbNewLine
End If
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
TextBox1.Text = textboxtext
End Sub
Private Sub cleardialogbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cleardialogbutton.Click
textboxtext = ""
End Sub
Function Docrc8(ByVal bytear() As Byte, ByVal cnt As Byte) As Byte
Dim j As Byte
Dim k As Byte
Dim crc8 As Byte
Dim m As Integer
Dim x As Integer
crc8 = 0
For m = 1 To cnt
x = bytear(m)
For k = 0 To 7
j = 1 And (x Xor crc8)
crc8 = Fix(crc8 / 2) And &HFF
x = Fix(x / 2) And &HFF
If j <> 0 Then
crc8 = crc8 Xor &H8C
End If
Next k
Next
Docrc8 = crc8
End Function
Private Sub halfspeedbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles halfspeedbutton.Click
For i As Byte = 2 To 8
output(i) = 0
Next
output(1) = 127
output(9) = Docrc8(output, 8)
If serialport.IsOpen = True Then
serialport.Write(output, 1, 9)
End If
End Sub
Private Sub fullspeedbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles fullspeedbutton.Click
For i As Byte = 2 To 8
output(i) = 0
Next
output(1) = 255
output(9) = Docrc8(output, 8)
If serialport.IsOpen = True Then
serialport.Write(output, 1, 9)
End If
End Sub
Private Sub TrackB_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles trackb.ValueChanged
Label11.Text = TB.Value.ToString
End Sub
End Class
Egal, wie ich den Wert von Location auch verändere, ich sehe die Trackbar einfach nicht... Vielleicht kann mir jemand helfen und sieht den Fehler?
Vielen Dank & Gruß
Chris
ich versuche momentan verzweifelt, eine Trackbar in mein vb.net Projekt angezeigt zu bekommen. Ich habe ein einfaches Projekt gemacht, bei dem der Wert der Trackbar in einem Label angezeigt wird.
Public Class Form1
Private TB As TrackBar
Private WithEvents TrackB As TrackBar
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
TB = New TrackBar
With TB
.Orientation = Orientation.Vertical
.Name = "TrackBar"
.SetRange(0, 100)
.SetBounds(10, 40, 30, Me.ClientSize.Height - 50)
.SmallChange = 1
.LargeChange = 10
.TickFrequency = 10
.TickStyle = TickStyle.Both
End With
Me.Controls.Add(TB)
AddHandler TB.ValueChanged, AddressOf TrackB_ValueChanged
Label1.Text = TB.Value.ToString
End Sub
Private Sub TrackB_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackB.ValueChanged
Label1.Text = TB.Value.ToString
End Sub
End Class
Das funktioniert! Ich kann mit der Trackbar den Text vom Label1 verändern. Nun habe ich das 1:1 in mein aktuelles Projekt übernommen. Allerdings wird die Trackbar nicht angezeigt... Sie soll sich in einer Groupbox (Groupbox4) befinden.
Public Class Form1
Dim output(9) As Byte
Dim textboxtext As String
Dim crc8_string As String
Dim tmp_string As String
Private tb As TrackBar
Private WithEvents TrackB As TrackBar
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
brake_combobox.SelectedIndex = 0
battery_type_combobox.SelectedIndex = 0
cutoff_mode_combobox.SelectedIndex = 0
cutoff_threshold_combobox.SelectedIndex = 1
startup_mode_combobox.SelectedIndex = 0
timing_combobox.SelectedIndex = 0
disconnectbutton.Enabled = False
connectbutton.Enabled = True
refreshbutton.PerformClick()
baudratecombobox.SelectedIndex = 9
minthrottletextbox.Text = "990"
maxthrottletextbox.Text = "1020"
refreshbutton.PerformClick()
comcombobox.SelectedIndex = 0
tb = New TrackBar
With tb
.Orientation = Orientation.Horizontal
.Name = "TrackBar"
.SetRange(0, 255)
.SetBounds(400, 450, 300, 30)
.SmallChange = 1
.LargeChange = 10
.TickFrequency = 10
.TickStyle = TickStyle.Both
.BringToFront()
End With
Me.Controls.Add(tb)
AddHandler tb.ValueChanged, AddressOf TrackB_ValueChanged
End Sub
Private Sub Form1_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.Closing
If serialport.IsOpen() = True Then
serialport.Close()
End If
End Sub
Private Sub connectbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles connectbutton.Click
If comcombobox.SelectedItem = "" Or baudratecombobox.SelectedItem = "" Then
MsgBox("Please check your RS232 Settings!")
Else
serialport.BaudRate = Val(Str(baudratecombobox.SelectedItem()))
serialport.Open()
connectbutton.Enabled = False
disconnectbutton.Enabled = True
End If
End Sub
Private Sub disconnectbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles disconnectbutton.Click
serialport.Close()
connectbutton.Enabled = True
disconnectbutton.Enabled = False
End Sub
Private Sub refreshbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles refreshbutton.Click
Dim ports As String()
comcombobox.Items.Clear()
ports = IO.Ports.SerialPort.GetPortNames()
For Each port In ports
Try
With serialport
.PortName = port
.ReadTimeout = Int32.Parse(500)
.Open()
End With
Catch es As Exception
Finally
If serialport.IsOpen = True Then
Me.comcombobox.Items.Add(port)
End If
serialport.Close()
End Try
Next port
End Sub
Private Sub i2cstandardbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles i2cstandardbutton.Click
minthrottletextbox.Text = "990"
maxthrottletextbox.Text = "1020"
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles setalltodefaultbutton.Click
brake_combobox.SelectedIndex = 0
battery_type_combobox.SelectedIndex = 0
cutoff_mode_combobox.SelectedIndex = 0
cutoff_threshold_combobox.SelectedIndex = 1
startup_mode_combobox.SelectedIndex = 0
timing_combobox.SelectedIndex = 0
MsgBox("Default Setting set!")
End Sub
Private Sub ToolTip1_Popup(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PopupEventArgs) Handles ToolTip1.Popup
End Sub
Private Sub setthrottlebutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles setthrottlebutton.Click
End Sub
Private Sub transferbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles transferbutton.Click
output(1) = brake_combobox.SelectedIndex + 1
output(2) = battery_type_combobox.SelectedIndex + 1
output(3) = cutoff_mode_combobox.SelectedIndex + 1
output(4) = cutoff_threshold_combobox.SelectedIndex + 1
output(5) = startup_mode_combobox.SelectedIndex + 1
output(6) = timing_combobox.SelectedIndex + 1
output(7) = Val(minthrottletextbox.Text) / 10
output(8) = Val(maxthrottletextbox.Text) / 10
output(9) = Docrc8(output, 8)
If serialport.IsOpen() = True Then
serialport.Write(output, 1, 9)
End If
End Sub
Private Sub minthrottletextbox_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles minthrottletextbox.KeyPress
Select Case Asc(e.KeyChar)
Case 48 To 57, 8
' Zahlen und Backspace zulassen
Case Else
' alle anderen Eingaben unterdrücken
e.Handled = True
End Select
End Sub
Private Sub maxthrottletextbox_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles maxthrottletextbox.KeyPress
Select Case Asc(e.KeyChar)
Case 48 To 57, 8
' Zahlen und Backspace zulassen
Case Else
' alle anderen Eingaben unterdrücken
e.Handled = True
End Select
End Sub
Private Sub serialport_DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles serialport.DataReceived
tmp_string = serialport.ReadLine()
If tmp_string = "sd!" Then
transferbutton.PerformClick()
Else
textboxtext = textboxtext + tmp_string + vbNewLine
End If
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
TextBox1.Text = textboxtext
End Sub
Private Sub cleardialogbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cleardialogbutton.Click
textboxtext = ""
End Sub
Function Docrc8(ByVal bytear() As Byte, ByVal cnt As Byte) As Byte
Dim j As Byte
Dim k As Byte
Dim crc8 As Byte
Dim m As Integer
Dim x As Integer
crc8 = 0
For m = 1 To cnt
x = bytear(m)
For k = 0 To 7
j = 1 And (x Xor crc8)
crc8 = Fix(crc8 / 2) And &HFF
x = Fix(x / 2) And &HFF
If j <> 0 Then
crc8 = crc8 Xor &H8C
End If
Next k
Next
Docrc8 = crc8
End Function
Private Sub halfspeedbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles halfspeedbutton.Click
For i As Byte = 2 To 8
output(i) = 0
Next
output(1) = 127
output(9) = Docrc8(output, 8)
If serialport.IsOpen = True Then
serialport.Write(output, 1, 9)
End If
End Sub
Private Sub fullspeedbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles fullspeedbutton.Click
For i As Byte = 2 To 8
output(i) = 0
Next
output(1) = 255
output(9) = Docrc8(output, 8)
If serialport.IsOpen = True Then
serialport.Write(output, 1, 9)
End If
End Sub
Private Sub TrackB_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles trackb.ValueChanged
Label11.Text = TB.Value.ToString
End Sub
End Class
Egal, wie ich den Wert von Location auch verändere, ich sehe die Trackbar einfach nicht... Vielleicht kann mir jemand helfen und sieht den Fehler?
Vielen Dank & Gruß
Chris