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forum.gifForum - iziBasic - Topic #1379

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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 257

active  Topic # 1379  Box & BoxFilled

09/04/2006 @ 17:09
by Emerson

Anonymous
1) Why does the 
BOX
 command always draw boxes with thick lines even when HIGHRES 1 is set (compared to drawing with the 
LINE
 statement)?

2) In 
HIGHRES 1
 mode, 
BOX 0,30 to 320,320
 draws a box with the left border thin and the rest thick. This becomes fixed if I changed it to 
BOX 1,30 to 320,320
.

3) Still in 
HIGHRES 1
 mode, BOX and BOXFILLED can start at 0,0 and end at 320,320 giving it a 321 pixel difference. Compared to LINE statement which can start at 0,0 and end at 319,319 which gives the correct 320 pixel difference.
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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Answer n° 1
--------
09/04/2006 @ 22:22
by aldweb

Anonymous

visitor
 Hello Emerson,

1) I do not get the same effect when using my IBPlot sample application in my Tungsten C. Could you give me more material to analyse what's happening?

2) I will check that. But it is true that, for BOX and BOXFILLED, I use an API that draws with one pixel difference to the absolute coordinates. So, I remember dealing with it to correct it... that might be the reason why you find yourself with a 1 pixel difference between the BOXFILLED and the LINE statements.

Overall, I get the feeling that I should build a code that draws BOXes myself, using 4 LINEs instead of using the box API from Palm...

Cheers,
aldweb


@+
aldweb
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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Answer n° 2
--------
10/04/2006 @ 17:15
by Emerson

Anonymous

visitor
 In SETRES 0 (screen is 160x160)
The BOX statement draws boxes with line thickness the same as using LINE itself.

But in SETRES 1 (screen is 320x320)
The BOX statement still draws the same thick bordered box. LINE on the other hand, draws thinner lines.

My device is a Treo 650.

For consistency with coordinates, I used LINE instead to replace both BOX and BOXFILLED. It's kinda slower actually (noticeable for BOXFILLED) but it works.
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