Visual Basic

Private Plugin As PlugInClass

Private Sub MDIParent1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    AddChildFormToPanel()
End Sub

Private Sub AddChildFormToPanel()
    Plugin = New PlugInClass(Me.FormPluginContainer)
End Sub

Public Class PlugInClass

    Private WithEvents m_mainform As FormPlugin

    Public Sub New(ByRef TargetPanel As Panel)

        m_mainform = New FormPlugin
        With m_mainform
            .TopLevel = False
            .FormBorderStyle = FormBorderStyle.None
            .Dock = DockStyle.Left
            TargetPanel.Controls.Add(m_mainform)
            .Visible = True
        End With

    End Sub

    Private Sub thePluginFormRaisedAnEvent() Handles m_mainform.ButtonPressed
        MsgBox("The Plug In Form Raised An Event in the PlugInClass")
    End Sub

End Class

Public Event ButtonPressed()

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    RaiseEvent ButtonPressed()
End Sub

Private WithEvents m_mainform As Form = frmMain     'not working

Private WithEvents m_mainform As frmMain

dim i as short = 0
i = 1 \ i '(error divide by zero).
i = i

Michael Schäuble wrote:

From the information I had before, it seemed that I would have to register my dll with regasm on every computer before I could use it.

Michael Schäuble wrote:

As a consequence I would have to install the .net framework on each machine, just to allow Excel recognize my assembly.

Michael Schäuble wrote:

After an experiment I figure now that it seems to be possible to deploy a pre-produced .tlb file as well - Excel called my dll properly on that particular computer. So I might probably save the whole regasm story as well as the installation of the .net framework.