[RESOLVED] Global Mouse Hook

Quote:

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Originally Posted by yo mismo

¿Your textboxes are named "X1", "Y1" literal?

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Yes they are up to 15

yes:

vb Code:

If cAmount = 1 Then
                        i = 1
                        Me.Invoke(updatebox,new object(){"X" & i.ToString, "Y" & i.ToString, p.X.ToString, p.Y.ToString})
                        'UpdateTB("X" & i.ToString, "Y" & i.ToString, p.X, p.Y)
                        Threading.Thread.Sleep(500)
                        cAmount = 2
'and so on

Ok changed all that now i get this error where i got an error before, ok this is my code so far. The error is near the bottom. the error is: Object reference not set to an instance of an object.

Code:

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    Private Sub threadfunc()
        Dim obj As Object = Me.Invoke(d)
        Dim p As Point = CType(obj, Point)
        While running
            Dim Rclick As Boolean = KeyStatus(Keys.RButton)
            Dim Lclick As Boolean = KeyStatus(Keys.LButton)
            If CollectingStarted = True Then
                If Lclick Then
                    If cAmount = 1 Then
                        i = 1
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 2
                    ElseIf cAmount = 2 Then
                        i = 2
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 3
                    ElseIf cAmount = 3 Then
                        i = 3
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 4
                    ElseIf cAmount = 4 Then
                        i = 4
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 5
                    ElseIf cAmount = 5 Then
                        i = 5
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 6
                    ElseIf cAmount = 6 Then
                        i = 6
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 7
                    ElseIf cAmount = 7 Then
                        i = 7
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 8
                    ElseIf cAmount = 8 Then
                        i = 8
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 9
                    ElseIf cAmount = 9 Then
                        i = 9
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 10
                    ElseIf cAmount = 10 Then
                        i = 10
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 11
                    ElseIf cAmount = 11 Then
                        i = 11
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 12
                    ElseIf cAmount = 12 Then
                        i = 12
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 13
                    ElseIf cAmount = 13 Then
                        i = 13
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 14
                    ElseIf cAmount = 14 Then
                        i = 14
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 15
                    ElseIf cAmount = 15 Then
                        i = 15
                        Me.Invoke(updatebox, New Object() {"X" & i.ToString, "Y" & i.ToString, MousePosition.X.ToString, MousePosition.Y.ToString})
                        Threading.Thread.Sleep(500)
                        cAmount = 16
                    End If
                End If
                If Rclick Then

                End If
            End If
        End While

    Public Sub UpdateTB(ByVal TB1 As String, ByVal TB2 As String, ByVal x As String, ByVal y As String)
        Dim txtbox1 As TextBox = CType(Me.Controls(TB1), TextBox)

        Dim txtbox2 As TextBox = CType(Me.Controls(TB2), TextBox)

        txtbox1.Text = x  <--- ERROR: Object reference not set to an instance of an object.

        txtbox2.Text = y  <--- ERROR: Object reference not set to an instance of an object.
    End Sub

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Are you sure you have the textbox's named:

X1,X2,X3,X4,X5,X6,X7,X8,X9,X10,X11,X12,X13,X14,X15,
Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8,Y9,Y10,Y11,Y12,Y13,Y14 and Y15 ?

Because if I pass the correct name of the textbox to that UpdateTB function, my textbox gets updated correctly with no error.

Justin

P.S

does that error occur when you call the delegate in the very first if? Or does it happen in a follow if (..cAmount = 2, ...cAmout = 3)

Yes they are definatly called X1 and Y1 up to 15 because i hand named them and it happens as soon as i click once, so yes on the first IF
P.S can you post your code, i will see if anything is different to mine. Thankyou

Here is the code:

vb Code:

Public Class Form1
 
    Public Delegate Sub Hello(ByVal a As String)
 
    Public Declare Function GetAsyncKeyState Lib "user32.dll" (ByVal vKey As Int32) As UShort
 
    Private running As Boolean = True
    Private t As System.Threading.Thread
    Private t2 As System.Threading.Thread
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        t = New Threading.Thread(New Threading.ThreadStart(AddressOf threadfunc))
        t2 = New Threading.Thread(New Threading.ThreadStart(AddressOf threadfunc2))
        t.Start()
        t2.Start()
 
    End Sub
 
     Public Sub threadfunc()
        While running
 
            Dim lbpushed As Boolean = KeyStatus(Keys.LButton)
 
            If lbpushed Then
                Dim d As New Hello(AddressOf Me.updateTB)
                Me.Invoke(d, New Object() {MousePosition.ToString})
            End If
 
 
        End While
    End Sub
 
    Public Sub threadfunc2()
 
        While running
 
            Threading.Thread.Sleep(20)
            Dim d As New Hello(AddressOf Me.updateLbl)
            Me.Invoke(d, New Object() {MousePosition.ToString})
 
        End While
 
    End Sub
 
    Public Sub updateTB(ByVal value As String)
 
        Me.TextBox1.Text = value
 
        'This was for testing the setting of a text box if you were using an increment as an identifier.
        'Dim one as Integer = 1
        'Dim text1 as TextBox = CType(Me.Controls("TextBox" + one.ToString),TextBox)
        'text1.Text = value
 
    End Sub
 
    Public Sub updateLbl(ByVal value As String)
 
        Me.LinkLabel1.Text = value
 
    End Sub
 
    Public Shared ReadOnly Property KeyStatus(ByVal Key As Keys) As Boolean
        Get
            If Key = Keys.LButton AndAlso My.Computer.Mouse.ButtonsSwapped Then
                Key = Keys.LButton
                MessageBox.Show("left button pushed")
            ElseIf Key = Keys.RButton AndAlso Not My.Computer.Mouse.ButtonsSwapped Then
                Key = Keys.RButton
                MessageBox.Show("right button pushed")
            End If
            Return GetAsyncKeyState(Key) And &H8000US
        End Get
    End Property
 
    Private Sub Form1_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
        Try
            t.Abort()
            t2.Abort()
        Catch ex As Exception
            If t.IsAlive Then
                t.Abort()
            End If
            If t2.IsAlive Then
                t.Abort()
            End If
        End Try
        t.Join()
        t2.Join()
    End Sub
 
 
End Class

Just add a LinkLabel and a TextBox to your form for testing this code...

Justin

Right i tried to apply the parts of this to mine but this is really different and it would mean changin everything, Can i just ask what does "Object reference not set to instance of a object" mean??

In yours you dont put the X in one txtbox and the Y in another you just put the whole string in one textbox, can u try it when putting each value in different textboxes please. Im really stuck here. The error i get means that txtbox1 = Nothing and txtbox2 = Nothing how can i make them not equal Nothing??

ok i had to do it separate because i couldn't find out why it was throwing that exception.
like this

Code:

---

    Public Sub UpdateTB1(ByVal x As String, ByVal y As String)
        If cAmount = 1 Then
            Dim text1 As TextBox = X1
            Dim text2 As TextBox = Y1
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 2 Then
            Dim text1 As TextBox = X2
            Dim text2 As TextBox = Y2
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 3 Then
            Dim text1 As TextBox = X3
            Dim text2 As TextBox = Y3
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 4 Then
            Dim text1 As TextBox = X4
            Dim text2 As TextBox = Y4
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 5 Then
            Dim text1 As TextBox = X5
            Dim text2 As TextBox = Y5
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 6 Then
            Dim text1 As TextBox = X6
            Dim text2 As TextBox = Y6
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 7 Then
            Dim text1 As TextBox = X7
            Dim text2 As TextBox = Y7
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 8 Then
            Dim text1 As TextBox = X8
            Dim text2 As TextBox = Y8
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 9 Then
            Dim text1 As TextBox = X9
            Dim text2 As TextBox = Y9
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 10 Then
            Dim text1 As TextBox = X10
            Dim text2 As TextBox = Y10
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 11 Then
            Dim text1 As TextBox = X11
            Dim text2 As TextBox = Y11
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 12 Then
            Dim text1 As TextBox = X12
            Dim text2 As TextBox = Y12
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 13 Then
            Dim text1 As TextBox = X13
            Dim text2 As TextBox = Y13
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 14 Then
            Dim text1 As TextBox = X14
            Dim text2 As TextBox = Y14
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 15 Then
            Dim text1 As TextBox = X15
            Dim text2 As TextBox = Y15
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 16 Then
            Dim text1 As TextBox = X16
            Dim text2 As TextBox = Y16
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 17 Then
            Dim text1 As TextBox = X17
            Dim text2 As TextBox = Y17
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 18 Then
            Dim text1 As TextBox = X18
            Dim text2 As TextBox = Y18
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 19 Then
            Dim text1 As TextBox = X19
            Dim text2 As TextBox = Y19
            text1.Text = x
            text2.Text = y
        ElseIf cAmount = 20 Then
            Dim text1 As TextBox = X20
            Dim text2 As TextBox = Y20
            text1.Text = x
            text2.Text = y
            MsgBox("Maximum coorinate capacity reached!", MsgBoxStyle.Exclamation, "Max Capacity")
        End If
    End Sub

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Did you get it working finally?

Justin

Yes :) thankyou for the help :) the program i made is in my signiture if u want to try it.