Drawing Functions

Modules
group	Clipping
group	Drawing Images
group	Simple Drawing
group	Text Drawing
group	Transformation
group	Path Construction
group	Color and Line Style
group	Opengl

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Detailed Description

There are only certain places you can execute drawing code in FLTK. Calling these functions at other places will result in undefined behavior!

• The most common is inside the virtual method Widget::draw(). To write code here, you must subclass one of the existing Widget classes and implement your own version of draw().
• You can also write boxtypes and labeltypes. These are small structures with functions in them that rae called by existing fltk::Widget::draw() methods. Pointers to these structures are stored in the widget's box() , labeltype(), and possibly other properties.
• You can write fltk::Image classes, which can then be put into the fltk::Widget::image() and be called by existing fltk::Widget::draw() methods.
• You can call fltk::Window::make_current() to do incremental update of a widget. Use fltk::Widget::window() to find the window.

All functions are defined by including <fltk/draw.h>

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