1. strange thing with put_screen_char()
Hi !
I was playing with put_screen_char, no problem, until now (why, I don't
know). voici :
---
include get.e
include graphics.e
include image.e
integer temp
temp=graphics_mode(3)
put_screen_char(1, 1, {'A', 152, 'Z', 131})
temp=wait_key()
temp=graphics_mode(-1)
---
this sounds 'normal' no ?
But it gives me an error, talking about slices ends past end ... :
--
image.e:337 in procedure put_screen_char()
slice ends past end of sequence (160 > 4)
line = 1
column = 1
char_attr = {65'A',152,90'Z',131}
scr_addr = 753664
vc = {1,3,25,80'P',0,0,32' ',8}
overflow = -156
.. called from D:\EBOCEIXA\JEU\TEMP.EX:6
--
Strange !!
Hardware problem maybe ?
Gwen
2. Re: strange thing with put_screen_char()
Gwen writes:
> But it gives me an error, talking about slices
> ends past end ... :
This is a known bug.
The test in put_screen_char() should be:
if overflow > 0 then -- correct
not:
if overflow then -- wrong
Please correct your copy of image.e
It will be corrected this way in 2.3.
Not many people use this routine.
Regards,
Rob Craig
Rapid Deployment Software
http://www.RapidEuphoria.com
3. Re: strange thing with put_screen_char()
Hello Gwen,
I would suggest Jiri Babor's site to find direct screen writes in text mode.
Jiri also has a fantastic fonts packge for vga thats really fast aswell.
I know the vga fonts come with transparentcy but not sure about
the text mode version although you could get around this with a little
effort. Also, try Putsxy an ROM Font which can be found on Jiri's site.
Euman
----- Original Message -----
From: "Gwen" <mb11363 at chello.be>
To: "EUforum" <EUforum at topica.com>
Sent: Wednesday, March 21, 2001 07:52
Subject: RE: strange thing with put_screen_char()
|
|
| Ok,I'll answer to myself : yes it's faster !
| But...I saw put_screen_char() use poke() to write to the screen, do you
| know how to write over an another char ? (like using bk_color(-1) in
| some fonts packages), I don't know how to do that with poke. If I just
| do that :
|
| poke(#B8000, {'A',15})
| poke(#B8000, {'O',4})
|
| The second instruction will erase my white 'A' and put an red 'O' at the
| place. Is there an attribute like "transparent background color" ?
|
| Gwen
|
|
|
|
|
4. Re: strange thing with put_screen_char()
Hi Gwen,
> Just one bad news for me, we can't print two char
> on the same place on
> the screen in text mode without erasing the first one.
> Bah, that's not very important 
Try please
----------------------
include image.e
set_active_page(0)
position(11,25)
puts(1,"||||||| 
---> ")
set_active_page(1)
position(11,25)
puts(1,"\\\\\\\\\\\\\\ ---> ")---keep \\ to take \
set_active_page(2)
position(11,25)
puts(1,"------- ---> ")
set_active_page(3)
position(11,25)
puts(1,"/////// ---> ")
while get_key()=-1 do
set_display_page(0)
set_display_page(1)
set_display_page(2)
set_display_page(3)
end while
------------------------------------
Regards,
Igor Kachan
kinz at peterlink.ru
