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Welcome to B4X forum!
B4X is a set of simple and powerful cross platform RAD tools:
B4A
(free) - Android development
B4J
(free) - Desktop and Server development
B4i
- iOS development
B4R
(free) - Arduino, ESP8266 and ESP32 development
All developers, with any skill level, are welcome to
join the B4X community
.
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Latest activity
What's new
New Posts
New profile posts
Latest activity
josejad
replied to the thread
Sad news...
.
If I'm not wrong, he contributed to B4A and B4J were free and open source...
Mar 24, 2026
mcqueccu
reacted to
Lucas Siqueira's post
in the thread
Share My Creation
Color Picker Tool for Windows - Pick any color from screen and copy HEX or RGB to clipboard
with
Like
.
Hi everyone! I'd like to share a Color Picker tool I built with B4J. It lets you hover the mouse over any pixel on the screen and copy...
Mar 24, 2026
T
Toley
posted the thread
B4J Question
[Macro] %ADDITIONAL% path
in
B4J Questions
.
Hi, my Additional libraries folder is set as in this tutorial...
Mar 24, 2026
T
thetrueman
reacted to
rwblinn's post
in the thread
Share My Creation
HubController – ESP32 Command Hub
with
Love
.
Thanks for feedback = Appreciated. Look at the short demo video (post #1) to see the HubController in action using the B4J Client...
Mar 24, 2026
mcqueccu
reacted to
Erel's post
in the thread
Server software is being updated. Might be some short downtimes.
with
Like
.
.
Mar 24, 2026
Erel
reacted to
rwblinn's post
in the thread
Share My Creation
HubController – ESP32 Command Hub
with
Like
.
Thanks for feedback = Appreciated. Look at the short demo video (post #1) to see the HubController in action using the B4J Client...
Mar 24, 2026
ilan
reacted to
Magma's post
in the thread
Sad news...
with
Like
.
R.I.P. Leonid
Mar 24, 2026
ilan
reacted to
PaulMeuris's post
in the thread
Sad news...
with
Sad
.
Leonid Radvinsky B4X investor
Mar 24, 2026
ilan
replied to the thread
Sad news...
.
i have never heard of him. i did not knew he invested in b4x. It's unbelievable what he achieved at his young age. R.I.P. 🙏
Mar 24, 2026
peacemaker
reacted to
rwblinn's post
in the thread
B4J Question
B4J File downloaded, move instead of copy
with
Like
.
Hi, an option is to rename the file stored in the temp folder. This is an example using JavaObjects (requires JavaObject Library). '...
Mar 24, 2026
Erel
posted the thread
Server software is being updated. Might be some short downtimes.
in
Forum Discussion
.
.
Mar 24, 2026
Erel
reacted to
Lucas Siqueira's post
in the thread
Share My Creation
B4J Color Palette Tool – Extract colors from any image (HEX picker + palette generator)
with
Like
.
Hi everyone! I'd like to share a B4J desktop tool I made to extract colors from images. It uses the ColourThief library to generate a...
Mar 24, 2026
Erel
reacted to
Lucas Siqueira's post
in the thread
Share My Creation
Color Picker Tool for Windows - Pick any color from screen and copy HEX or RGB to clipboard
with
Like
.
Hi everyone! I'd like to share a Color Picker tool I built with B4J. It lets you hover the mouse over any pixel on the screen and copy...
Mar 24, 2026
Erel
reacted to
William Lancee's post
in the thread
B4J Tutorial
[B4X][ListOfArrays] Evaluating Expressions Of Columns in a ListOfArrays
with
Like
.
Will do. It isn't quite finished and I have to add the intelisense comments.
Mar 24, 2026
asales
reacted to
Lucas Siqueira's post
in the thread
Share My Creation
Color Picker Tool for Windows - Pick any color from screen and copy HEX or RGB to clipboard
with
Like
.
Hi everyone! I'd like to share a Color Picker tool I built with B4J. It lets you hover the mouse over any pixel on the screen and copy...
Mar 24, 2026
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