30 Module Documentation. 31 Class Documentation code itself, special comments in the code, and additional documentation files. 2 – FLTK Basics. This chapter teaches you the basics of compiling programs that use FLTK. Writing Your First FLTK Program. All programs must include the file. class Fl. Class Hierarchy. Fl. Include Files. #include. Description. The Fl class is the FLTK global (static) class containing state information and global.

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The idle function can be used to get background processing done. For instance, you can provide a custom implementation of handle on Graphics. What this really does is call all idle callbacks, all elapsed timeouts, call Fl:: This does nothing if the current visual is not colormapped.

Brew Install Stack This should be as simple as: This can be used by code that wants to monitor the application’s state, such as to keep a display up to date. For instance, I urge newcomers to this library not to look at Graphics. The return value is positive if an event or fd happens before the time elapsed. It will attempt to put “families” of faces together, so that the normal one is first, followed by bold, italic, and bold italic.

The documentation for this package still applies because the theme mostly just re-draws widgets to look a little nicer so the fundamentals of the API are not touched.


An example to compute the area inside a widget’s box: If overlay is non-zero then the color is freed from the overlay colormap. Notice, however, that the trace stops there.

Fast Light Toolkit – Fast Light Toolkit (FLTK)

I’m very open to ideas on how to make this easier. The width and height parameters determine the size of the widget or window in pixels. This allows the window system to take as long as necessary to retrieve the paste buffer or even to screw up completely without complex and error-prone synchronization code in FLTK. Please report site problems to ‘ erco seriss. Other demo packages show more complicated usage of the API.

If FLTK cannot figure out what to do with an event, it calls each of these functions most recent first until one of them returns non-zero. This lets you provide global shortcut keys.

Listing 1 – “hello.

Fast Light Toolkit

In the third paragraph which I’d relocate to just before the detailed description of the various switchesreplace references to i with references to j to agree with the earlier, revised declarations. The next call to Fl:: Please see the Demos section of this document for examples of apps that show off more complex uses of the API.

Unfortunately Mac versions older than El Capitan and Yosemite are not supported. On return i is set to the index of the first non-switch. The second form returns the red, green, and blue values separately in referenced variables.

Copying the buffer every time the selection is changed is obviously wasteful, especially for large selections.


FLTK: FLTK Programming Manual

You can quit the program by closing the window or pressing the ESC ape key. First create the directory that will contain the executable and DLLs: This approach makes Haddock very unhappy and the generated documentation is frequently unhelpful. These are the colors used as backgrounds by almost all widgets and used to draw the edges of all the boxtypes. When the documentatin becomes ready for reading Fl:: This is usually done using the -I option:.

Fortunately installing from source is pretty quick and painless. Source Contents Index fltkhs This may make FLTK display better and will reduce conflicts with other programs that want lots of colors. However there may be a nul before that if the keystroke translates to a nul character or you paste a nul character.

Don’t pass non-zero to this. Hopefully the demos just mentioned and others included with this library show that, even though customizing is rocumentation, it is possible to do a lot.


The second form clears the value returned by Fl:: Produced by Haddock version 2. It is harmless to remove a check callback that no longer exists. The documentaation are named “fltk.