Button_Event Programming Tips

ajish.raju

There are multiple ways to use a button_event, i am wondering which is the best way based on standards and code reusability. Here are the options that i feel are there, please mention if there are any other options.

1.

BUTTON_EVENT [dvTP,0]
{
   PUSH:
    {

	SWITCH(Button.input.channel)
	{
	    CASE 2833://do something
	    CASE 2838://
	    CASE 2839://	    

	}
    }
}

This is good since even if the touch panel array is more, channel number will never hit 4000 so it will always fire. But you always have to refer to the touch panel on where the channel number is used

2.

BUTTON_EVENT [dvTP,btPage]
{
   PUSH:
    {

	SWITCH(get_last(btPage))
	{
	    CASE 1://do something
	    CASE 2://
	    CASE 3://	    

	}
    }
}

Here you declare an integer variable which will have the channel numbers. The variable can be commented so that you can know what each channel number is for so you don't have to refer to the touch panel. You need to be careful if your touch panel array x integer variable < 4000 or it wont fire.

3.

DEFINE_CONSTANT
INTEGER BTN_ALLOW_TOBE_MONITORED	= 1555
INTEGER BTN_ALLOW_TO_MONITOR		= 1556
INTEGER BTN_MOD_GLOBAL_PB		= 1557
DEFINE_EVENT
BUTTON_EVENT [dvTP,BTN_MOD_GLOBAL_PB]
{
   PUSH:
    {
    }
}
BUTTON_EVENT [dvTP,BTN_ALLOW_TO_MONITOR]
{
   PUSH:
    {
    }
}
BUTTON_EVENT [dvTP,BTN_ALLOW_TOBE_MONITORED]
{
   PUSH:
    {
    }
}

Here you will have multiple constant declarations so its a bit tedious to write all these declarations.

What is the general consensus on button_events and how to write them well.