Run time event handelers

[John]

Can Event handlers be built to handle Objects that are created at runtime?

Lets say I want the System.Windows.Forms.MonthCalendar() to be created and
displayed at the click of a button. I can do this with out a problem. Here's
the code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles Button1.Click
Public cmd As New System.Windows.Forms.MonthCalendar()
cmd = New System.Windows.Forms.MonthCalendar()
cmd.TodayDate = "10/8/2001"
cmd.Location = New Point(sender.location.x + sender.width, sender.location.y
+ sender.height)
cmd.Name = "calPopUp"
Controls.Add(cmd)
cmd.BringToFront()
End Sub

Now I want an even handler to handle the doubleclick events for the calendar.
Can this be done?
I do not want to create a generic event handler that handles all DoubleClick
Events just the DoubleClick for this Calendar Object.

THanks,
-John

[Chris Alton]

If you want to add a Handler at run time all you have to do is add this line
AddHandler newObject.MouseDown(or whatever event you want it to fire against),
AddressOf buttonObject_MouseDown (This is the name of the Public Sub that
you want to handle the event)

So in your case it would look something like this.

AddHandler cmd.DoubleClick, AddressOf calendarHandler_DoubleClick

Public Sub calendarHandler_DoubleClick(ByVal sender as Object, e as System.Windows.Forms.MouseEventArgs)
(Don't know if these parameters are correct so don't quote me on this.)
...code...
End Sub

Notice you don't need to add a Handles keyword at the end of the sub declaration
since the AddHandler takes care of that for you every time you create the
calendar object. Just put the AddHandler in before you add the control to
the controls list and that should take care of it.

Good luck,

Chris

"John" <knowthediff@hotmail.com> wrote:
>
>Can Event handlers be built to handle Objects that are created at runtime?
>
>Lets say I want the System.Windows.Forms.MonthCalendar() to be created and
>displayed at the click of a button. I can do this with out a problem.
Here's
>the code:
> Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs)
>Handles Button1.Click
>Public cmd As New System.Windows.Forms.MonthCalendar()
> cmd = New System.Windows.Forms.MonthCalendar()
> cmd.TodayDate = "10/8/2001"
> cmd.Location = New Point(sender.location.x + sender.width, sender.location.y
>+ sender.height)
> cmd.Name = "calPopUp"
> Controls.Add(cmd)
> cmd.BringToFront()
> End Sub
>
>Now I want an even handler to handle the doubleclick events for the calendar.
> Can this be done?
>I do not want to create a generic event handler that handles all DoubleClick
>Events just the DoubleClick for this Calendar Object.
>
>THanks,
>-John