Mouse click position is off

Hello, I am having a bit of a weird issue. It seems the mouse down event / context menu only fires when I click the the border line of the control but not the inside of the control. When I click the inside of the control I get the default windows right click menu. Is there a way to fix this? 

 Private Sub txtHomePath_MouseDown(sender As Object, e As MouseEventArgs) Handles txtHomePath.MouseDown
        If e.Button = MouseButtons.Right Then
            Dim c As New RadDropDownMenu
            c.BeginInit()
            c.ThemeName = Me.ThemeName
            Dim item As New RadMenuItem("Delete Folder") With {.Image = My.Resources.folder_delete_fatcow.GetThumbnailImage(16, 16, Nothing, Nothing)}
            AddHandler item.Click, AddressOf DeleteFolder
            c.Items.Add(item)
            c.EndInit()
            c.Show(Control.MousePosition)
      End If

    End Sub