define _HPUX_SOURCE under HP-UX, otherwise many things are not defined in standard...

[wxWidgets.git] / docs / latex / wx / tfont.tex

diff --git a/docs/latex/wx/tfont.tex b/docs/latex/wx/tfont.tex
index 212cbdbb480fad03ee1bc814d4ec901b29d10960..21ce73db3d33a4ddaff47f8d7f54f1af8cc329ab 100644 (file)
--- a/docs/latex/wx/tfont.tex
+++ b/docs/latex/wx/tfont.tex
@@ -1,6 +1,6 @@
-\section{Font overview}\label{wxfontoverview}
+\section{wxFont overview}\label{wxfontoverview}
 
-Class: \helpref{wxFont}{wxfont}
+Class: \helpref{wxFont}{wxfont}, \helpref{wxFontDialog}{wxfontdialog}
 
 A font is an object which determines the appearance of text, primarily
 when drawing text to a window or device context. A font is determined by
@@ -9,11 +9,11 @@ the following parameters (not all of them have to be specified, of course):
 \begin{twocollist}\itemsep=0pt
 \twocolitem{Point size}{This is the standard way of referring to text size.}
 \twocolitem{Family}{Supported families are:
-  {\bf wxDEFAULT, wxDECORATIVE, wxROMAN, wxSCRIPT, wxSWISS, wxMODERN}.
-  {\bf wxMODERN} is a fixed pitch font; the others are either fixed or variable pitch.}
+ {\bf wxDEFAULT, wxDECORATIVE, wxROMAN, wxSCRIPT, wxSWISS, wxMODERN}.
+ {\bf wxMODERN} is a fixed pitch font; the others are either fixed or variable pitch.}
 \twocolitem{Style}{The value can be {\bf wxNORMAL, wxSLANT} or {\bf wxITALIC}.}
 \twocolitem{Weight}{The value can be {\bf wxNORMAL, wxLIGHT} or {\bf wxBOLD}.}
-\twocolitem{Underlining}{The value can be TRUE or FALSE.}
+\twocolitem{Underlining}{The value can be true or false.}
 \twocolitem{Face name}{An optional string specifying the actual typeface to be used. If NULL,
 a default typeface will chosen based on the family.}
 \twocolitem{Encoding}{The font encoding (see {\bf wxFONTENCODING\_XXX}
@@ -23,12 +23,15 @@ details)}
 
 Specifying a family, rather than a specific typeface name, ensures a degree of
 portability across platforms because a suitable font will be chosen for the
-given font family.
+given font family, however it doesn't allow to choose a font precisely as the
+parameters above don't suffice, in general, to identify all the available fonts
+and this is where using the native font descriptions may be helpful - see
+below.
 
 Under Windows, the face name can be one of the installed fonts on the user's
 system. Since the choice of fonts differs from system to system, either choose
 standard Windows fonts, or if allowing the user to specify a face name, store
-the family id with any file that might be transported to a different Windows
+the family name with any file that might be transported to a different Windows
 machine or other platform.
 
 \normalbox{{\bf Note:} There is currently a difference between the appearance
@@ -38,4 +41,24 @@ Windows, the unit for text is points but the text is scaled according to the
 current mapping mode. However, user scaling on a device context will also
 scale fonts under both environments.}
 
+\subsection{Native font information}\label{nativefontinformation}
+
+An alternative way of choosing fonts is to use the native font description.
+This is the only acceptable solution if the user is allowed to choose the font
+using the \helpref{wxFontDialog}{wxfontdialog} because the selected font cannot
+be described using only the family name and so, if only family name is stored
+permanently, the user would almost surely see a different font in the program
+later.
+
+Instead, you should store the value returned by 
+\helpref{wxFont::GetNativeFontInfoDesc}{wxfontgetnativefontinfodesc} and pass
+it to \helpref{wxFont::SetNativeFontInfo}{wxfontsetnativefontinfo} later to
+recreate exactly the same font.
+
+Note that the contents of this string depends on the platform and shouldn't be
+used for any other purpose (in particular, it is not meant to be shown to the
+user). Also please note that although the native font information is currently
+implemented for Windows and Unix (GTK+ and Motif) ports only, all the methods
+are available for all the ports and should be used to make your program work
+correctly when they are implemented later.