Handler on RapidData for GTPUMessageBox

Developer Tools
1

Hi,

I want to show a gtpumessagebox when the value of variable x = true. So I:
AddHandler bToHMI_StckDrpped.ValueChanged, AddressOf ShowMsgStackDrpped

Sub ShowMsgStackDrpped(ByVal sender As Object, ByVal e As DataValueChangedEventArgs)

If bToHMI_StckDrpped.Value.ToString = RTrue.Value.ToString Then
MsgStackDrpped()
End If
End Sub
Sub MsgStackDrpped()
Dim Title As String = “Stack Dropped : Robot Requesting Action”
Dim Message As String = “Please Select between ‘RETRY’ if you want to Continue Movement (False Drop information) OR ‘CANCEL’ if you want To Do the next scheduled Robot Task.”
Dim response As MsgBoxResult
Dim rNum As RapidDomain.Num
rNum.FillFromNum(2)
response = MsgBox(Message, MsgBoxStyle.RetryCancel, Title)
'GTPUMessageBox.Show(Me, Nothing, Message, Title, _
’ System.Windows.Forms.MessageBoxIcon.Hand, System.Windows.Forms.MessageBoxButtons.RetryCancel)
If response = MsgBoxResult.Retry Then
rNum.FillFromNum(2)
nFrmHMI_StckDrppedAnswr.Value = rNum
Else
rNum.FillFromNum(1)
nFrmHMI_StckDrppedAnswr.Value = rNum
End If
End Sub

Private Sub StckDrppedRC(ByVal sender As System.Object, ByVal Answer As MessageBoxEventArgs)

If Answer.DialogResult = Windows.Forms.DialogResult.Retry Then

rNum.FillFromNum(2)
nFrmHMI_StckDrppedAnswr.Value = rNum
Else
rNum.FillFromNum(1)
nFrmHMI_StckDrppedAnswr.Value = rNum

End If

End Sub

receive a message error like a thread cannot be the parents of another threads. So with the VC i tried with a standard msgbox and it works well. So if its not possible to use a msgbox I will like to know how i can do to show a GTPUMessageBox just when a Rapiddata = TRUE?

Best Regards,

Martin

2

Hi Martin,

The method ShowMsgStackDrpped is not executed by the UI thread. In order to make a change in the UI (in your case, a GTPUMessageBox), your code must be executed by the UI thread.

You need to Invoke the UI thread in any control.

Ex. C# … this.Invoke( …) ← where “this” refers to the TpsForm

BR