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Refer to the preferred Fl_Surface_Device::push_current()/pop_current() functions.

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12524 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
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Manolo Gouy
2017-10-23 16:09:26 +00:00
parent 554ab20b80
commit 84aba46e8a
1 changed files with 3 additions and 4 deletions
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documentation/src/drawing.dox
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@@ -27,13 +27,12 @@ In contrast, code that draws to other drawing surfaces than the display
(i.e., instances of derived classes of the Fl_Surface_Device class, except (i.e., instances of derived classes of the Fl_Surface_Device class, except
Fl_Display_Device, such as Fl_Printer and Fl_Copy_Surface) can be executed Fl_Display_Device, such as Fl_Printer and Fl_Copy_Surface) can be executed
at any time as follows: at any time as follows:
<ol><li> Memorize what is the current drawing surface calling Fl_Surface_Device::surface(), <ol><li> Make your surface the new current drawing surface calling the
and make your surface the new current drawing surface calling the surface's Fl_Surface_Device::push_current(Fl_Surface_Device*) function.
set_current() function;
<li> Make a series of calls to any of the drawing functions described below; <li> Make a series of calls to any of the drawing functions described below;
these will operate on the new current drawing surface; these will operate on the new current drawing surface;
<li> Set the current drawing surface back to its previous state calling <li> Set the current drawing surface back to its previous state calling
the previous surface's set_current(). Fl_Surface_Device::pop_current().
</ol> </ol>
\subsection ssect_DrawingUnit What Drawing Unit do FLTK drawing functions use? \subsection ssect_DrawingUnit What Drawing Unit do FLTK drawing functions use?