More on Winforms and the GUI Controls

I must admit, I'm having fun using PB11 with C#.

I've found a way to add my own event handling in PB Winforms simply by using a .NET Assembly. Some events are not available to us in the IDE. Some events that we use to use have been "filtered" out and become unsupported. There is a way to execute these events with a couple function calls.

There were 2 events in my case that I needed to trap. Neither of which were available in the IDE. They were the Paint and MouseLeave event. In the past I would have used the pbm_paint event id for the Paint event and the Other event for the MouseLeave event. PB11 filters these events out so they are no longer options.

To get around this I created a .NET assembly in C#. This new class had 1 public function and accepted one arguements ("object pbObj"). The function did the following:

namespace PBEvent
{
    public class PBEventHandler
    {
        private object pbObject;
        
        private void PBTriggerEvent(string eventId)
        {
            Sybase.PowerBuilder.Win.PBUserObject pbUO = (Sybase.PowerBuilder.Win.PBUserObject)pbObject;
            pbUO.TriggerEvent(eventId);
        }

        public void PBRegisterObject(object pbObj)
        {
            pbObject = pbObj;

            pbObj.Paint += delegate { PBTriggerEvent("ue_Paint"); };
            pbObj.MouseLeave += delegate { PBTriggerEvent("ue_MouseLeave"); };
        }

    }
}

And calling it was even simpler:

PB Code:

//Declare instance Variable
#if defined PBDOTNET then
    PBEvent.PBEventHandler i_PBEventHandler
#end if

//Register events - Constructor event

#if defined PBDOTNET then
    i_PBEventHandler = CREATE PBEvent.PBEventHandler

    i_PBEventHandler.PBRegisterObject(THIS)
#end if
 

Brad 

January 15, 2008 08:43 by bradwery
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