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Welcome to the Fast Light Tool Kit general discussion group.
This is for general discussions about the FLTK library; questions, problems compiling/installing, etc.
This group is mirrored at fltk.org for read access via NNTP and web browsing.

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Gonzalo Garramuño

3:31 PM

FLTK Wayland application under KDE Plasma

A user of my program reported a scaling factor problem on KDE Plasma under Wayland / Vulkan on

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FLTK Wayland application under KDE Plasma

A user of my program reported a scaling factor problem on KDE Plasma under Wayland / Vulkan on

3:31 PM

pvr...@btinternet.com, Albrecht Schlosser4

Nov 4

Using CMake to build under MSVC.

Hi Albrecht, From: 'Albrecht Schlosser' via fltk.general <fltkg...@googlegroups.com>

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Using CMake to build under MSVC.

Hi Albrecht, From: 'Albrecht Schlosser' via fltk.general <fltkg...@googlegroups.com>

Nov 4

Klaus Rudolph, … Matthias Melcher5

Nov 4

multi touch support

I have put out a proposal for pen.tablet.stylus support today: https://github.com/fltk/fltk/

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multi touch support

I have put out a proposal for pen.tablet.stylus support today: https://github.com/fltk/fltk/

Nov 4

Klaus Rudolph, … Albrecht Schlosser8

Nov 1

setting font in fltk

On 11/1/25 15:31 'Klaus Rudolph' via fltk.general wrote: See above. If you build the library

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setting font in fltk

On 11/1/25 15:31 'Klaus Rudolph' via fltk.general wrote: See above. If you build the library

Nov 1

Roger Tunnicliffe, … Albrecht Schlosser8

Oct 31

Undefined Reference - on.. well, just about everything

Thx Albrecht I found what was required. These are the additional libraries I needed to link (for this

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Undefined Reference - on.. well, just about everything

Thx Albrecht I found what was required. These are the additional libraries I needed to link (for this

Oct 31

Roger Tunnicliffe, Albrecht Schlosser2

Oct 31

On 10/31/25 21:46 Roger Tunnicliffe wrote: > I seem to remember doing this a few years ago but

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On 10/31/25 21:46 Roger Tunnicliffe wrote: > I seem to remember doing this a few years ago but

Oct 31

Klaus Rudolph, Albrecht Schlosser4

Oct 26

seg fault with fl_draw fltk1.4.4

On 10/26/25 16:43 'Klaus Rudolph' wrote: Albrecht-S schrieb am Sonntag, 26. Oktober 2025 um

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seg fault with fl_draw fltk1.4.4

On 10/26/25 16:43 'Klaus Rudolph' wrote: Albrecht-S schrieb am Sonntag, 26. Oktober 2025 um

Oct 26

Klaus Rudolph, imm2

Oct 26

crash in fl_draw

With the caveat that I'm on my phone and haven't actually tested your example.... On Sun, 26

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crash in fl_draw

With the caveat that I'm on my phone and haven't actually tested your example.... On Sun, 26

Oct 26

Gonzalo Garramuño, Matthias Melcher3

Oct 25

Creating a tooltip programmatically at a certain screen position

Oh, and you can also get the FL_BEFORE_TOLTIP event for any widget. It gives you the opportunity to

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Creating a tooltip programmatically at a certain screen position

Oh, and you can also get the FL_BEFORE_TOLTIP event for any widget. It gives you the opportunity to

Oct 25

Paul Hahn, Matthias Melcher4

Oct 24

Fl_Plugin question

pauldou...@gmail.com schrieb am Donnerstag, 23. Oktober 2025 um 23:54:35 UTC+2: FYI I have just

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Fl_Plugin question

pauldou...@gmail.com schrieb am Donnerstag, 23. Oktober 2025 um 23:54:35 UTC+2: FYI I have just

Oct 24

Oct 23

ProgressBar Indeterminate Mode?

Does the FL_Progress have an option to make it indeterminate. My thinking on this is it would simple

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ProgressBar Indeterminate Mode?

Does the FL_Progress have an option to make it indeterminate. My thinking on this is it would simple

Oct 23

Sep 11

Fl_Slider events after deactivate()

Unsurprisingly, this was an issue on my end. Rob On Wednesday, September 10, 2025 at 4:12:51 PM UTC-7

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Fl_Slider events after deactivate()

Unsurprisingly, this was an issue on my end. Rob On Wednesday, September 10, 2025 at 4:12:51 PM UTC-7

Sep 11

Eric Sokolowsky

Sep 10

Sensitivity for touch screens

I'm writing an application with FLTK 1.4.4 that is primarily intended to be run on a touch screen

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Sensitivity for touch screens

I'm writing an application with FLTK 1.4.4 that is primarily intended to be run on a touch screen

Sep 10

Eric Sokolowsky, Albrecht Schlosser5

Sep 10

Customizing the look of Fl_Scroll

Albrecht, This sounds like a good approach. I can share parts of my code. Note that I don't have

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Customizing the look of Fl_Scroll

Albrecht, This sounds like a good approach. I can share parts of my code. Note that I don't have

Sep 10

Basile Starynkevitch, … Manolo3

Sep 10

mention how to compile FLTK 1.5 on Linux as shared library with debug and optimization

Le mardi 9 septembre 2025 à 11:03:54 UTC+2, bas...@starynkevitch.net a écrit : Please mention on the

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mention how to compile FLTK 1.5 on Linux as shared library with debug and optimization

Le mardi 9 septembre 2025 à 11:03:54 UTC+2, bas...@starynkevitch.net a écrit : Please mention on the

Sep 10

Gonzalo Garramuño, Matthias Melcher2

Sep 5

FLUID: How can I make Live Resize work?

The Live Resize feature is meant as a verification for setting the resizable hierarchy correctly for

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FLUID: How can I make Live Resize work?

The Live Resize feature is meant as a verification for setting the resizable hierarchy correctly for

Sep 5

Aug 30

fltk.org server slowness

We were having some pretty slow page loads on fltk.org. This was hopefully solved this morning (Sat

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fltk.org server slowness

We were having some pretty slow page loads on fltk.org. This was hopefully solved this morning (Sat

Aug 30

Gonzalo Garramuño, … Matthias Melcher8

Aug 23

Handling composed key for international text

„Compare“ originates from OS's that use several keystrokes to write one character. For example,

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Handling composed key for international text

„Compare“ originates from OS's that use several keystrokes to write one character. For example,

Aug 23

danielc...@gmail.com, … Gonzalo Garramuño10

Aug 22

fltk resizable fixed height

El 22/8/25 a las 15:35, 'Albrecht Schlosser' via fltk.general escribió: If there are other

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fltk resizable fixed height

El 22/8/25 a las 15:35, 'Albrecht Schlosser' via fltk.general escribió: If there are other

Aug 22

Daniel G., Manolo3

Aug 14

Remove border/shadow of Fl_Choice.H widget

Thank you for your help, not satisfying but works well! :) Manolo schrieb am Donnerstag, 14. August

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Remove border/shadow of Fl_Choice.H widget

Thank you for your help, not satisfying but works well! :) Manolo schrieb am Donnerstag, 14. August

Aug 14

duncan gibson, … Greg Ercolano4

Aug 12

C++ Weekly - Ep 493 - C++ GUI Quick Start with FLTK

On 8/12/25 03:04, Ian MacArthur wrote: I'm slightly "confused" by the conjunction of

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C++ Weekly - Ep 493 - C++ GUI Quick Start with FLTK

On 8/12/25 03:04, Ian MacArthur wrote: I'm slightly "confused" by the conjunction of

Aug 12

Lucas Sanner, … Ian MacArthur6

Aug 12

Multiple Document Interface system ?

Thank you guys for your help and advice. After checking out Albrecht's link I think I'm gonna

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Multiple Document Interface system ?

Thank you guys for your help and advice. After checking out Albrecht's link I think I'm gonna

Aug 12

Rob McDonald, … Ian MacArthur9

Aug 11

Key-mouse combined event on Mac

On Saturday, 9 August 2025 at 15:16:41 UTC+1 Phill wrote: Yes the fact that US and UK keyboards

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Key-mouse combined event on Mac

On Saturday, 9 August 2025 at 15:16:41 UTC+1 Phill wrote: Yes the fact that US and UK keyboards

Aug 11

Albrecht Schlosser

Aug 9

FYI: Debian 13 (Trixie) has been released with FLTK 1.4.3

... and is on its way to the mirrors (my own mirror got it already). Debian Trixie is now 'Stable

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FYI: Debian 13 (Trixie) has been released with FLTK 1.4.3

... and is on its way to the mirrors (my own mirror got it already). Debian Trixie is now 'Stable

Aug 9

Nikolay Tomov, … Albrecht Schlosser5

Aug 9

FLTK as a service.

On 8/9/25 14:03 e...@ohnezutaten.de wrote: Hi Nikolay, Am Freitag, 8. August 2025, 22:12 schrieb

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FLTK as a service.

On 8/9/25 14:03 e...@ohnezutaten.de wrote: Hi Nikolay, Am Freitag, 8. August 2025, 22:12 schrieb

Aug 9

Lucas Sanner, … Albrecht Schlosser5

Jul 30

Make only the main window resizable ?

Thanks for the code, it helped. In the end, the dummy invisible box is unnecessary. g->resizable(

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Make only the main window resizable ?

Thanks for the code, it helped. In the end, the dummy invisible box is unnecessary. g->resizable(

Jul 30

Dave Allured - NOAA Affiliate, … Manolo9

Jul 30

Option to specify applications directory

On Wednesday, July 30, 2025 at 12:37:49 AM UTC-6 Manolo wrote: As Albrecht previously wrote here,

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Option to specify applications directory

On Wednesday, July 30, 2025 at 12:37:49 AM UTC-6 Manolo wrote: As Albrecht previously wrote here,

Jul 30

Mo_Al_, … Manolo3

Jul 28

Crash when hovering menu item

Neither do I get a crash here with the C++ repo program under Wayand and Ubuntu 25.04 with 2 displays

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Crash when hovering menu item

Neither do I get a crash here with the C++ repo program under Wayand and Ubuntu 25.04 with 2 displays

Jul 28

Albrecht Schlosser, Matthias Melcher2

Jul 20

FLTK 1.4.4 released on July 20, 2025

Thank you very much for your work, Albrecht!

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FLTK 1.4.4 released on July 20, 2025

Thank you very much for your work, Albrecht!

Jul 20

Pierre Jasmin, Gonzalo Garramuño7

Jul 10

On 7/10/25 1:56 PM, Gonzalo Garramuño wrote: > > Can you share with me the Linux pipeline that

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On 7/10/25 1:56 PM, Gonzalo Garramuño wrote: > > Can you share with me the Linux pipeline that

Jul 10

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