Most primitive way for doing graphics on Lazarus
lazarus / 39-Graphics

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pascal111 · 2021-04-20 18:41

I'm a beginner in Lazarus, and I'm asking about the most primitive way
of making graphics on Lazarus without needing for downloading
additional packages if the Lazarus has standard classic way for that.
(I don't think that I have OpenGl card)

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dseligo · 2021-04-20 20:36

Look at this thread, in answer #3 you can download example project: ht
tps://forum.lazarus.freepascal.org/index.php/topic,54249.msg402876.htm
l#msg402876

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Roland57 · 2021-04-20 21:36

Maybe you could use the ptcGraph unit.

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speter · 2021-04-21 00:19

The simplest way to do graphics in lazaraus is to use the canvas
object - either a form's canvas or place a paintbox component on the
form and use it's canvas.

Have a look at the wiki page "developing with graphics"
https://wiki.freepascal.org/Developing_with_Graphics.
There is also a useful forum thread at https://forum.lazarus.freepasca
l.org/index.php/topic,42439.msg296299.html#msg296299

cheers
S.

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pascal111 · 2021-04-21 01:34

Thanks everyone!

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Handoko · 2021-04-21 06:31

Quote from: pascal111 on April 20, 2021, 08:41:54 pmI don't think that
I have OpenGl card

... 810-based boards include an AMR expansion slot. Additionally, the
integrated graphics does not support 32-bit graphics mode, forcing the
user to downsample the 810's standard 24-bit mode to 16-bit in order
to run most games or full screen DirectX/OpenGL programs ...
Source: https://en.wikipedia.org/wiki/Intel_810

Intel 810 Chipset, which was an integrated VGA chipset released by
Intel in 1999 already has some basic supports of OpenGL. Any computer
with integrated VGA manufactured after 2000 (Pentium 4 and above)
should already support OpenGL version 1.2.
https://en.wikipedia.org/wiki/OpenGL#Version_history

So I believe your computer should be able to run OpenGL 1.2 programs
unless it is a Pentium 3 or lower. You can download and run
glSlideshow to test your computer, it requires OpenGL 1.2 support.
https://forum.lazarus.freepascal.org/index.php/topic,35313.msg256719.h
tml#msg256719