in dialog, i still cant find for mirc 6.03 pressed button event, some1 (i think king tomato) said $did -f.... but that works only for sclick event and sclick is for mouse click

how can when pressed i.e. in text box ENTER button some even be executed, like on press /echo -s pressed enter ?

There is no event to handle that, you have to work around it.

edit:
I suggested something similar in the Feature suggestions not long ago, I think someone may have posted a work around there.

alias enter { /dialog -m enter enter }

dialog enter {
title "Enter"
size -1 -1 70 25
option dbu
text "Press Enter", 1, 5 5 60 8, center
text "", 2, 5 15 60 8, center
button "Enter Button", 3, -1 -1 1 1
}

on *:DIALOG:enter:INIT:*: { /did -t $dname 3 }
on *:DIALOG:enter:SCLICK:3: { /did -ra $dname 2 Enter was pressed! }

thank you so much !