1. wxEuphoria: Why Does this Proggie Crash?
- Posted by cklester <cklester at yahoo.com>
Apr 06, 2005
-
Last edited Apr 07, 2005
Matt, I sent this to you via email, but I suspect you check here more
frequently. :)
I'm getting an error running the following:
-- i've basically just used the drawing_primitives.exw code we developed...
-- so i don't understand why i get the error.
without warning
include wxEuphoria.e
include wxGraphics.e
include wxButton.e
include wxTimer.e
constant
win_Test = create( wxFrame, {0,-1,"GUI Graphics Test", -1, -1, -1, -1} )
, bttn_StartStop = create( wxButton, {win_Test,-1,"Start", -1, -1, -1, -1})
, drawBox = create( wxPanel, {win_Test})
, DrawTimer = create( wxTimer, {drawBox, -1} )
integer timing, playing, counter
timing = (1=2)
playing = (1=2)
counter = 0
procedure TogglePlay( atom this, atom event_type, atom id, atom event )
if this = bttn_StartStop then -- start/stop the dots
playing = not playing
if playing then
-- set button text to "Stop"
set_button_label( bttn_StartStop, "Stop" )
-- start timer
start_timer( DrawTimer, 1, 1 )
counter = 0
else
-- set button text to "Start"
-- stop timer
stop_timer( DrawTimer )
set_button_label( bttn_StartStop, "Start" )
end if
end if
end procedure
set_event_handler( bttn_StartStop, get_id(bttn_StartStop),
wxEVT_COMMAND_BUTTON_CLICKED, routine_id("TogglePlay"))
procedure onTimer( atom this, atom event_type, atom id, atom event )
atom dc
object VOID
dc = create( wxClientDC, {drawBox} )
begin_drawing(dc)
while playing do
counter += 1
wx_puts( dc, sprintf("%d",{counter}))
-- let other events happen:
VOID = call_member( wxApp_Yield, myApp_this, {1})
end while
end_drawing(dc)
delete_instance(dc)
end procedure
set_event_handler( drawBox, -1, wxEVT_TIMER, routine_id("onTimer"))
wxMain( win_Test )
-=ck
"Programming in a state of EUPHORIA."
http://www.cklester.com/euphoria/
2. Re: wxEuphoria: Why Does this Proggie Crash?
cklester wrote:
>
> Matt, I sent this to you via email, but I suspect you check here more
> frequently. :)
>
> I'm getting an error running the following:
>
The problem is the wx_puts() statement. If you only supply an atom as
an argument, it assumes that it's a window in a paint event and creates
a dc for you. You need to change it to something like:
wx_puts( {drawBox, 10, 10, dc}, sprintf("%d",{counter}))
Of course, you'll need to give a position and size to drawBox. Also, the
way it's set up right now, it just writes over itself.
Matt Lewis
