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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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Franck Barbenoire, … Albrecht Schlosser6

6:01 AM

strange behaviour with Fl_Scroll

On 6/22/25 11:57 'Albrecht Schlosser' via fltk.general wrote: In a first attempt I used

unread,

strange behaviour with Fl_Scroll

On 6/22/25 11:57 'Albrecht Schlosser' via fltk.general wrote: In a first attempt I used

6:01 AM

danielc...@gmail.com, Greg Ercolano2

Jun 21

Fl::awake on linux dont work

On 6/21/25 17:56, danielc...@gmail.com wrote: Hi, the same app on windows mingw works well, it's

unread,

Fl::awake on linux dont work

On 6/21/25 17:56, danielc...@gmail.com wrote: Hi, the same app on windows mingw works well, it's

Jun 21

david allen, … Mohammed12

Jun 21

Problem with Windows development

msvcrt is indeed more portable. It can target older versions of windows, similarly the mingw

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Problem with Windows development

msvcrt is indeed more portable. It can target older versions of windows, similarly the mingw

Jun 21

Franck Barbenoire

Jun 20

Uncheckable check boxes in a scrolling area

Hello all, I noticed a problem involving Fl_Scroll and a list of check boxes. I don't know

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Uncheckable check boxes in a scrolling area

Hello all, I noticed a problem involving Fl_Scroll and a list of check boxes. I don't know

Jun 20

fischer...@gmail.com, … Heart Bleed14

Jun 20

FLTK-based cross-platform CSV editor Tablecruncher now open source

@Er..... Yes sir. I was looking for something like that @fisher..... I really think I would learn a

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FLTK-based cross-platform CSV editor Tablecruncher now open source

@Er..... Yes sir. I was looking for something like that @fisher..... I really think I would learn a

Jun 20

Albrecht Schlosser, … pvr...@btinternet.com5

Jun 18

ANNOUNCEMENT: Git branch `master` is now FLTK 1.5 development

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

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ANNOUNCEMENT: Git branch `master` is now FLTK 1.5 development

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

Jun 18

LM, … Gonzalo Garramuño6

Jun 16

El 16/6/25 a las 02:54, Manolo escribió: > > GL-using macOS FLTK apps built for the X11

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El 16/6/25 a las 02:54, Manolo escribió: > > GL-using macOS FLTK apps built for the X11

Jun 16

danielc...@gmail.com, … LM11

Jun 14

fltk directfb or directfb2

I experimented with the FLTK DirectFB fork and using DirectFB in general on my systems a long while

unread,

fltk directfb or directfb2

I experimented with the FLTK DirectFB fork and using DirectFB in general on my systems a long while

Jun 14

Mark McDougall, … pvr...@btinternet.com5

Jun 7

Can't get Fl_Table to show?!?

From: fltkg...@googlegroups.com <fltkg...@googlegroups.com> on behalf of Mark McDougall

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Can't get Fl_Table to show?!?

From: fltkg...@googlegroups.com <fltkg...@googlegroups.com> on behalf of Mark McDougall

Jun 7

Rob McDonald, Greg Ercolano3

Jun 6

Which tab is showing?

On 6/5/25 16:55, Rob McDonald wrote: Is there a way to know which tab in a Fl_Tabs is 'on top

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Which tab is showing?

On 6/5/25 16:55, Rob McDonald wrote: Is there a way to know which tab in a Fl_Tabs is 'on top

Jun 6

Eric Sokolowsky, lifeatt...@gmail.com2

May 30

Questions about Fl_Shared_Image and scaling

Fl_Image::scale() is counter-intuitive (at least to me). It does not modify the loaded image, but

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Questions about Fl_Shared_Image and scaling

Fl_Image::scale() is counter-intuitive (at least to me). It does not modify the loaded image, but

May 30

Robert Arkiletian, Albrecht Schlosser2

May 10

md5sums do not match for 1.4.3 tarballs

Hi Robert, thank you very much for the report. You're correct, I must have uploaded an older

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md5sums do not match for 1.4.3 tarballs

Hi Robert, thank you very much for the report. You're correct, I must have uploaded an older

May 10

Albrecht Schlosser, … Clark Williams7

May 2

FLTK 1.4.3 released on April 29, 2025

H On Tuesday, April 29, 2025 at 7:34:14 PM UTC+1 Albrecht-S wrote: FTR: I checked the remaining

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FLTK 1.4.3 released on April 29, 2025

H On Tuesday, April 29, 2025 at 7:34:14 PM UTC+1 Albrecht-S wrote: FTR: I checked the remaining

May 2

Heart Bleed, … Matthias Melcher6

Apr 28

What is damage() all about?

Thank you so much for acknowledging :) On Monday, 28 April 2025 at 14:23:57 UTC+5:30 Matthias Melcher

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What is damage() all about?

Thank you so much for acknowledging :) On Monday, 28 April 2025 at 14:23:57 UTC+5:30 Matthias Melcher

Apr 28

pvr...@btinternet.com, Matthias Melcher7

Apr 27

FLTK crash when saving preferences

From: 'Matthias Melcher' via fltk.general <fltkg...@googlegroups.com> Sent: Sunday,

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FLTK crash when saving preferences

From: 'Matthias Melcher' via fltk.general <fltkg...@googlegroups.com> Sent: Sunday,

Apr 27

pvr...@btinternet.com, Matthias Melcher3

Apr 17

Saving a 64-bit intgeger

From: 'Matthias Melcher' via fltk.general <fltkg...@googlegroups.com> Sent: Thursday

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Saving a 64-bit intgeger

From: 'Matthias Melcher' via fltk.general <fltkg...@googlegroups.com> Sent: Thursday

Apr 17

James Lehman, … imm12

Apr 13

Mostly about Fl_RGB_Image

On Sun, 13 Apr 2025, 16:52 James Lehman wrote: If I am using the fl_draw_image() function and passing

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Mostly about Fl_RGB_Image

On Sun, 13 Apr 2025, 16:52 James Lehman wrote: If I am using the fl_draw_image() function and passing

Apr 13

rs, … Jose Quinteiro11

Apr 10

FL_Native_File_Chooser crashing on show()

Contrast with the Windows Registry where all apps settings are dumped into one great big tree. Both

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FL_Native_File_Chooser crashing on show()

Contrast with the Windows Registry where all apps settings are dumped into one great big tree. Both

Apr 10

holm.h...@gmail.com, … Ian MacArthur4

Apr 9

Hi Håvard, As the others have said, GL text rendering is a bit "tricky". The fltk wrappers

unread,

Hi Håvard, As the others have said, GL text rendering is a bit "tricky". The fltk wrappers

Apr 9

rs, … Albrecht Schlosser8

Apr 8

Build errors after upgrading MaxOSX

On 4/7/25 11:03 'Matthias Melcher' via fltk.general wrote: When upgrading Xcode or macOS, the

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Build errors after upgrading MaxOSX

On 4/7/25 11:03 'Matthias Melcher' via fltk.general wrote: When upgrading Xcode or macOS, the

Apr 8

Heart Bleed, … Albrecht Schlosser10

Apr 8

What's the difference between repeat_timeout and add_timout?

On 4/7/25 18:26 humpty wrote: Am I right in thinking that Fl::repeat_timeout calculates the time from

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What's the difference between repeat_timeout and add_timout?

On 4/7/25 18:26 humpty wrote: Am I right in thinking that Fl::repeat_timeout calculates the time from

Apr 8

david allen, Greg Ercolano3

Apr 7

Problem with Fl_Cairo_Window

Thanks! On Monday, April 7, 2025 at 1:12:22 AM UTC-4 er...@seriss.com wrote: On 4/6/25 6:15 PM, david

unread,

Problem with Fl_Cairo_Window

Thanks! On Monday, April 7, 2025 at 1:12:22 AM UTC-4 er...@seriss.com wrote: On 4/6/25 6:15 PM, david

Apr 7

pvr...@btinternet.com, Greg Ercolano2

Apr 5

MSVC Code Analysis warnings.

On 4/5/25 6:47 AM, 'pvr...@btinternet.com' via fltk.general wrote: I don't know if you

unread,

MSVC Code Analysis warnings.

On 4/5/25 6:47 AM, 'pvr...@btinternet.com' via fltk.general wrote: I don't know if you

Apr 5

Tim Cuatt, … Rob McDonald19

Mar 31

Make some Fl_Tree_Item methods virtual?

Hi everyone, Thanks all for your swift work. We really appreciate it over here! Apologies I wasn'

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Make some Fl_Tree_Item methods virtual?

Hi everyone, Thanks all for your swift work. We really appreciate it over here! Apologies I wasn'

Mar 31

Andreas Held, Matthias Melcher2

Mar 30

Private constructor in Fl_Display_Device

The Fl_Display_Device constructor is called by Fl_Display_Device *Fl_Display_Device::display_device()

unread,

Private constructor in Fl_Display_Device

The Fl_Display_Device constructor is called by Fl_Display_Device *Fl_Display_Device::display_device()

Mar 30

Howard Lightstone, … Albrecht Schlosser8

Mar 29

Upgrade destination

On 3/29/25 15:03 'Albrecht Schlosser' via fltk.general wrote: ... Before you start you should

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Upgrade destination

On 3/29/25 15:03 'Albrecht Schlosser' via fltk.general wrote: ... Before you start you should

Mar 29

Rob McDonald, Phil Rose4

Mar 26

Online doc suggestion

Hi Rob, Google never forgets anything. I've recently spent some time wondering why the previous

unread,

Online doc suggestion

Hi Rob, Google never forgets anything. I've recently spent some time wondering why the previous

Mar 26

Caspian Merlin, … Mo_Al_27

Mar 26

Menu - render over child window

Oh, I feel stupid - I saw that method but didn't realise it took a bool as an arg... Thank you

unread,

Menu - render over child window

Oh, I feel stupid - I saw that method but didn't realise it took a bool as an arg... Thank you

Mar 26

Matthias Melcher, Greg Ercolano2

Mar 26

Lost messages/threads.

On 3/26/25 14:49, 'Matthias Melcher' via fltk.general wrote: Hmm, I saw two threads started (

unread,

Lost messages/threads.

On 3/26/25 14:49, 'Matthias Melcher' via fltk.general wrote: Hmm, I saw two threads started (

Mar 26

Robert Arkiletian, Manolo2

Mar 24

Status in Fedora linux

Thanks for this information about FLTK 1.4 and Fedora. I'd like to understand why some FLTK

unread,

Status in Fedora linux

Thanks for this information about FLTK 1.4 and Fedora. I'd like to understand why some FLTK

Mar 24

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