OpenEuphoria

Re: Key Press to have Window "reappear ??

• Posted by DerekParnell (admin) Feb 22, 2011
• 1652 views

The problem is that keys only respond to the control that has focus at the time of keypress, and a Window almost never has focus ... especially if its invisible.

The solution is to set a keystroke handler for the Screen control. This is a special control that is always defined, so you don't have to create it. It gets every message from Windows for your application.

So you only have to do a minor chnage to your program; change the handler for Win to Screen and things should be better.

 
-- The changed code would be ... 
procedure WinKey(integer self, integer event, sequence parms) 
    -- Check for key presses. 
    if parms[1] = VK_ESCAPE then  
        setVisible(Win,1) 
    elsif parms[1] = VK_ENTER then 
        init_vars() 
    end if 
end procedure 
setHandler(  Screen  , w32HKeyDown, routine_id("WinKey"))