ae0a956f2e
Add docos for sort functions and changes to fl_filename_list() and Fl_File_Browser::load(). git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@2176 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
987 lines
24 KiB
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987 lines
24 KiB
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<H1 ALIGN="RIGHT"><A NAME="functions">B - Function Reference</A></H1>
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<P>This appendix describes all of the <tt>fl_</tt> functions. For a
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description of the FLTK classes, see <A href="widgets.html">Appendix
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A</A>.
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<H2>Function List by Name</H2>
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<UL>
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<LI><A HREF="#fl_alert"><TT>fl_alert</TT></A></LI>
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<LI><A HREF="#fl_ask"><TT>fl_ask</TT></A></LI>
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<LI><A HREF="#fl_beep"><TT>fl_beep</TT></A></LI>
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<LI><A HREF="#fl_choice2"><TT>fl_choice</TT></A></LI>
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<LI><A HREF="#fl_color_chooser_func"><TT>fl_color_chooser</TT></A></LI>
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<LI><A HREF="#fl_color_cube"><TT>fl_color_cube</TT></A></LI>
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<LI><A HREF="#fl_dir_chooser"><TT>fl_dir_chooser</TT></A></LI>
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<LI><A HREF="#fl_file_chooser2"><TT>fl_file_chooser</TT></A></LI>
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<LI><A HREF="#fl_file_chooser_callback"><TT>fl_file_chooser_callback</TT></A></LI>
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<LI><A HREF="#fl_filename_absolute"><TT>fl_filename_absolute</TT></A></LI>
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<LI><A HREF="#fl_filename_expand"><TT>fl_filename_expand</TT></A></LI>
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<LI><A HREF="#fl_filename_ext"><TT>fl_filename_ext</TT></A></LI>
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<LI><A HREF="#fl_filename_isdir"><TT>fl_filename_isdir</TT></A></LI>
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<LI><A HREF="#fl_filename_list"><TT>fl_filename_list</TT></A></LI>
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<LI><A HREF="#fl_filename_match"><TT>fl_filename_match</TT></A></LI>
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<LI><A HREF="#fl_filename_name"><TT>fl_filename_name</TT></A></LI>
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<LI><A HREF="#fl_filename_relative"><TT>fl_filename_relative</TT></A></LI>
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<LI><A HREF="#fl_filename_setext"><TT>fl_filename_setext</TT></A></LI>
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<LI><A HREF="#fl_gray_ramp"><TT>fl_gray_ramp</TT></A></LI>
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<LI><A HREF="#fl_input2"><TT>fl_input</TT></A></LI>
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<LI><A HREF="#fl_message"><TT>fl_message</TT></A></LI>
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<LI><A HREF="#fl_message_font"><TT>fl_message_font</TT></A></LI>
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<LI><A HREF="#fl_message_icon"><TT>fl_message_icon</TT></A></LI>
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<LI><A HREF="#fl_password"><TT>fl_password</TT></A></LI>
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<LI><A HREF="#fl_rgb_color"><TT>fl_rgb_color</TT></A></LI>
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<LI><A HREF="#fl_show_colormap"><TT>fl_show_colormap</TT></A></LI>
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</UL>
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<H2>Function List by Category</H2>
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<UL>
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<LI>Dialog Functions
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<UL>
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<LI><A HREF="#fl_alert"><TT>fl_alert</TT></A></LI>
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<LI><A HREF="#fl_ask"><TT>fl_ask</TT></A></LI>
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<LI><A HREF="#fl_beep"><TT>fl_beep</TT></A></LI>
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<LI><A HREF="#fl_choice2"><TT>fl_choice</TT></A></LI>
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<LI><A HREF="#fl_color_chooser_func"><TT>fl_color_chooser</TT></A></LI>
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<LI><A HREF="#fl_dir_chooser"><TT>fl_dir_chooser</TT></A></LI>
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<LI><A HREF="#fl_file_chooser2"><TT>fl_file_chooser</TT></A></LI>
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<LI><A HREF="#fl_file_chooser_callback"><TT>fl_file_chooser_callback</TT></A></LI>
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<LI><A HREF="#fl_input2"><TT>fl_input</TT></A></LI>
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<LI><A HREF="#fl_message"><TT>fl_message</TT></A></LI>
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<LI><A HREF="#fl_message_font"><TT>fl_message_font</TT></A></LI>
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<LI><A HREF="#fl_message_icon"><TT>fl_message_icon</TT></A></LI>
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<LI><A HREF="#fl_password"><TT>fl_password</TT></A></LI>
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<LI><A HREF="#fl_show_colormap"><TT>fl_show_colormap</TT></A></LI>
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</UL>
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</LI>
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<LI>Drawing Functions
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<UL>
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<LI><A HREF="#fl_color_cube"><TT>fl_color_cube</TT></A></LI>
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<LI><A HREF="#fl_gray_ramp"><TT>fl_gray_ramp</TT></A></LI>
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<LI><A HREF="#fl_rgb_color"><TT>fl_rgb_color</TT></A></LI>
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</UL>
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</LI>
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<LI>Filename Functions
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<UL>
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<LI><A HREF="#fl_filename_absolute"><TT>fl_filename_absolute</TT></A></LI>
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<LI><A HREF="#fl_filename_expand"><TT>fl_filename_expand</TT></A></LI>
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<LI><A HREF="#fl_filename_ext"><TT>fl_filename_ext</TT></A></LI>
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<LI><A HREF="#fl_filename_isdir"><TT>fl_filename_isdir</TT></A></LI>
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<LI><A HREF="#fl_filename_list"><TT>fl_filename_list</TT></A></LI>
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<LI><A HREF="#fl_filename_match"><TT>fl_filename_match</TT></A></LI>
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<LI><A HREF="#fl_filename_name"><TT>fl_filename_name</TT></A></LI>
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<LI><A HREF="#fl_filename_relative"><TT>fl_filename_relative</TT></A></LI>
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<LI><A HREF="#fl_filename_setext"><TT>fl_filename_setext</TT></A></LI>
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</UL>
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</LI>
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</UL>
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<!-- NEED 4in -->
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<H2><A NAME="fl_alert">fl_alert</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/fl_ask.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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void fl_alert(const char *, ...);
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</PRE></UL>
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<H3>Description</H3>
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<P>Same as <tt>fl_message()</tt> except for the "!" symbol.
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<P ALIGN=CENTER><IMG src="fl_alert.gif" ALT="The fl_alert window">
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<!-- NEED 4in -->
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<H2><A name="fl_ask">fl_ask</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/fl_ask.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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int fl_ask(const char *, ...);
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</PRE></UL>
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<H3>Description</H3>
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<P>Displays a printf-style message in a pop-up box with an
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"Yes" and "No" button and waits for the user
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to hit a button. The return value is 1 if the user hits Yes, 0
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if they pick No. The enter key is a shortcut for Yes and ESC is
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a shortcut for No.
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<P ALIGN="CENTER"><IMG SRC="fl_ask.gif" ALT="The fl_ask window.">
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<!-- NEED 4in -->
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<H2><A name="fl_beep">fl_beep</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/fl_ask.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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void fl_beep(int type = FL_BEEP_DEFAULT)
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</PRE></UL>
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<H3>Description</H3>
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<P>Sounds an audible notification; the default <CODE>type</CODE> argument
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sounds a simple "beep" sound. Other values for <CODE>type</CODE> may use
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a system or user-defined sound file:
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<UL>
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<LI><TT>FL_BEEP_DEFAULT</TT> - Make a generic "beep" sound.
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<LI><TT>FL_BEEP_MESSAGE</TT> - Make a sound appropriate for an
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informational message.
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<LI><TT>FL_BEEP_ERROR</TT> - Make a sound appropriate for an
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error message.
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<LI><TT>FL_BEEP_QUESTION</TT> - Make a sound appropriate for
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a question.
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<LI><TT>FL_BEEP_PASSWORD</TT> - Make a sound appropriate for
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a password prompt.
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<LI><TT>FL_BEEP_NOTIFICATION</TT> - Make a sound appropriate for
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an event notification ("you have mail", etc.)
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</UL>
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<!-- NEED 4in -->
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<H2><A name="fl_choice2">fl_choice</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/fl_ask.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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int fl_choice(const char *q, const char *b0, const char *b1, const char *b2, ...);
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</PRE></UL>
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<H3>Description</H3>
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<P>Shows the message with three buttons below it marked with the
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strings <tt> b0</tt>, <tt>b1</tt>, and <tt>b2</tt>. Returns 0,
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1, or 2 depending on which button is hit. ESC is a shortcut for
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button 0 and the enter key is a shortcut for button 1. Notice
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the buttons are positioned "backwards". You can hide
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buttons by passing <tt>NULL</tt> as their labels.
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<P ALIGN="CENTER"><IMG SRC="fl_choice.gif" ALT="The fl_choice window.">
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<!-- NEED 4in -->
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<H2><A name="fl_color_chooser_func">fl_color_chooser</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/Fl_Color_Chooser.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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int fl_color_chooser(const char *title, double &r, double &g, double &b);
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int fl_color_chooser(const char *title, uchar &r, uchar &g, uchar &b);
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</PRE></UL>
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<H3>Description</H3>
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<P>The <CODE>double</CODE> version takes RGB values in the range
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0.0 to 1.0. The <CODE>uchar</CODE> version takes RGB values in
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the range 0 to 255. The <tt>title</tt> argument specifies the
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label (title) for the window.
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<P ALIGN="CENTER"><IMG SRC="fl_color_chooser.jpg" ALT="The fl_color_chooser dialog."></P>
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<P><tt>fl_color_chooser()</tt> pops up a window to let the user
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pick an arbitrary RGB color. They can pick the hue and
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saturation in the "hue box" on the left (hold down
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CTRL to just change the saturation), and the brighness using the
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vertical slider. Or they can type the 8-bit numbers into the
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RGB <A href=Fl_Value_Input.html#Fl_Value_Input><tt>
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Fl_Value_Input</tt></A> fields, or drag the mouse across them to
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adjust them. The pull-down menu lets the user set the input
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fields to show RGB, HSV, or 8-bit RGB (0 to 255).
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<P>This returns non-zero if the user picks ok, and updates the
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RGB values. If the user picks cancel or closes the window this
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returns zero and leaves RGB unchanged.
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<P>If you use the color chooser on an 8-bit screen, it will
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allocate all the available colors, leaving you no space to
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exactly represent the color the user picks! You can however use
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<A href="drawing.html#fast"><tt> fl_rectf()</tt></A> to fill a
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region with a simulated color using dithering.
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<!-- NEED 4in -->
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<H2><A NAME="fl_color_cube">fl_color_cube</A></H2>
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<HR>
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<H3>Include File</H3>
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<UL><PRE>
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#include <FL/fl_draw.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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Fl_Color fl_color_cube(int r, int g, int b);
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</PRE></UL>
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<H3>Description</H3>
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<P>Returns a color out of the color cube. <tt>r</tt> must be in
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the range 0 to FL_NUM_RED (5) minus 1. <tt>g</tt> must be in the
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range 0 to FL_NUM_GREEN (8) minus 1. <tt>b</tt> must be in the
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range 0 to FL_NUM_BLUE (5) minus 1.
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<P>To get the closest color to a 8-bit set of R,G,B values use:
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<UL><PRE>
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fl_color_cube(R * (FL_NUM_RED - 1) / 255,
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G * (FL_NUM_GREEN - 1) / 255,
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B * (FL_NUM_BLUE - 1) / 255);
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</PRE></UL>
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<!-- NEED 4in -->
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<H2><A NAME="fl_dir_chooser">fl_dir_chooser</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/Fl_File_Chooser.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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char *fl_dir_chooser(const char * message, const char *fname, int relative = 0);
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</PRE></UL>
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<H3>Description</H3>
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<P>The <tt>fl_dir_chooser()</tt> function displays a <A
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HREF="Fl_File_Chooser.html"><tt>Fl_File_Chooser</tt></A> dialog
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so that the user can choose a directory.
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<P><tt>message</tt> is a string used to title the window.
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<P><tt>fname</tt> is a default filename to fill in the chooser
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with. If this is <tt>NULL</tt> then the last filename that was
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choosen is used. The first time the file chooser is called this
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defaults to a blank string.
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<P><tt>relative</tt> specifies whether the returned filename
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should be relative (any non-zero value) or absolute (0). The
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default is to return absolute paths.
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<P>The returned value points at a static buffer that is only
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good until the next time <tt>fl_dir_chooser()</tt> is called.
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<!-- NEED 4in -->
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<H2><A NAME="fl_file_chooser2">fl_file_chooser</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/Fl_File_Chooser.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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char *fl_file_chooser(const char * message, const char *pattern, const char *fname, int relative = 0);
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</PRE></UL>
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<H3>Description</H3>
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<P>FLTK provides a "tab completion" file chooser that
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makes it easy to choose files from large directories. This file
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chooser has several unique features, the major one being that
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the Tab key completes filenames like it does in Emacs or tcsh,
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and the list always shows all possible completions.
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<P ALIGN="CENTER"><IMG SRC="filechooser.gif" ALT="The fl_file_chooser window.">
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<P><tt>fl_file_chooser()</tt> pops up the file chooser, waits
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for the user to pick a file or Cancel, and then returns a
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pointer to that filename or <tt>NULL</tt> if Cancel is chosen.
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<P><tt>message</tt> is a string used to title the window.
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<P><tt>pattern</tt> is used to limit the files listed in a
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directory to those matching the pattern. This matching is done
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by <A
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href="#fl_filename_match"><tt>fl_filename_match()</tt></A>. Use
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<tt>NULL</tt> to show all files.
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<P><tt>fname</tt> is a default filename to fill in the chooser
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with. If this is <tt>NULL</tt> then the last filename that was
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choosen is used (unless that had a different pattern, in which
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case just the last directory with no name is used). The first
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time the file chooser is called this defaults to a blank string.
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<P><tt>relative</tt> specifies whether the returned filename
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should be relative (any non-zero value) or absolute (0). The
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default is to return absolute paths.
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<P>The returned value points at a static buffer that is only
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good until the next time <tt>fl_file_chooser()</tt> is called.
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<!-- NEED 4in -->
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<H2><A NAME="fl_file_chooser_callback">fl_file_chooser_callback</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/Fl_File_Chooser.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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void fl_file_chooser_callback(void (*cb)(const char *));
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</PRE></UL>
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<H3>Description</H3>
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<P>Sets a function that is called every time the user clicks a
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file in the currently popped-up file chooser. This could be used
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to preview the contents of the file. It has to be reasonably
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fast, and cannot create FLTK windows.
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<!-- NEED 4in -->
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<H2><A NAME="fl_filename_absolute">fl_filename_absolute</A></H2>
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<HR>
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<H3>Include Files</H3>
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<UL><PRE>
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#include <FL/filename.H>
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</PRE></UL>
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<H3>Prototype</H3>
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<UL><PRE>
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int fl_filename_absolute(char *to, int tolen, const char *from);
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int fl_filename_absolute(char *to, const char *from);
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</PRE></UL>
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<H3>Description</H3>
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<P>Converts a relative pathname to an absolute pathname. If
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<tt>from</tt> does not start with a slash, the current working
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directory is prepended to <tt>from</tt> with any occurances of
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<tt>.</tt> and <tt>x/..</TT> deleted from the result. The
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absolute pathname is copied to <tt>to</tt>; <tt>from</tt> and
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<tt>to</tt> may point to the same buffer.
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<TT>fl_filename_absolute</TT> returns non-zero if any changes
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were made.
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<P>The first form accepts a maximum length (<TT>tolen</TT>) for
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the destination buffer, while the second form assumes that the
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destination buffer is at least <TT>FL_PATH_MAX</TT> characters
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in length.
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<!-- NEED 4in -->
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<H2><A NAME="fl_filename_expand">fl_filename_expand</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/filename.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
int fl_filename_expand(char *to, int tolen, const char *from);
|
|
int fl_filename_expand(char *to, const char *from);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>This function replaces environment variables and home
|
|
directories with the corresponding strings. Any occurrence of
|
|
<tt>$X</tt> is replaced by <tt>getenv("X")</tt>; if
|
|
<TT>$X</TT> is not defined in the environment, the occurrence is
|
|
not replaced. Any occurence of <tt>~X</tt> is replaced by user
|
|
<tt>X</tt>'s home directory; if user <TT>X</TT> does not exist,
|
|
the occurrence is not replaced. Any resulting double slashes
|
|
cause everything before the second slash to be deleted.
|
|
|
|
<P>The result is copied to <TT>to</TT>, and <TT>from</TT> and
|
|
<TT>to</TT> may point to the same buffer.
|
|
<TT>fl_filename_expand()</TT> returns non-zero if any changes
|
|
were made.
|
|
|
|
<P>The first form accepts a maximum length (<TT>tolen</TT>) for
|
|
the destination buffer, while the second form assumes that the
|
|
destination buffer is at least <TT>FL_PATH_MAX</TT> characters
|
|
in length.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_filename_ext">fl_filename_ext</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/filename.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
const char *fl_filename_ext(const char *f);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Returns a pointer to the last period in
|
|
<tt>fl_filename_name(f)</tt>, or a pointer to the trailing
|
|
<TT>nul</TT> if none is found.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_filename_isdir">fl_filename_isdir</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/filename.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
int fl_filename_isdir(const char *f);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Returns non-zero if the file exists and is a directory.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_filename_list">fl_filename_list</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/filename.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
int fl_filename_list(const char *d, dirent ***list, Fl_File_Sort_F *sort = fl_numericsort);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>This is a portable and const-correct wrapper for the
|
|
<tt>scandir()</tt> function. <tt>d</tt> is the name of a
|
|
directory; it does not matter if it has a trailing slash or not.
|
|
For each file in that directory a "dirent" structure
|
|
is created. The only portable thing about a dirent is that
|
|
<TT>dirent.d_name</TT> is the <TT>nul</TT>-terminated file name.
|
|
An array of pointers to these <TT>dirent</TT>'s is created and a
|
|
pointer to the array is returned in <tt>*list</tt>. The number
|
|
of entries is given as a return value. If there is an error
|
|
reading the directory a number less than zero is returned, and
|
|
<tt>errno</tt> has the reason; <tt>errno</tt> does not work
|
|
under WIN32.
|
|
|
|
<P>The <tt>sort</tt> argument specifies a sort function to be used
|
|
when on the array of filenames. The following standard sort functions
|
|
are provided with FLTK:
|
|
|
|
<UL>
|
|
|
|
<LI><TT>fl_alphasort</tt> - The files are sorted in
|
|
ascending alphabetical order; upper- and lowercase
|
|
letters are compared according to their ASCII ordering -
|
|
uppercase before lowercase.
|
|
|
|
<LI><TT>fl_casealphasort</tt> - The files are sorted in
|
|
ascending alphabetical order; upper- and lowercase
|
|
letters are compared equally - case is not significant.
|
|
|
|
<LI><TT>fl_casenumericsort</TT> - The files are sorted
|
|
in ascending "alphanumeric" order, where an
|
|
attempt is made to put unpadded numbers in consecutive
|
|
order; upper- and lowercase letters are compared equally
|
|
- case is not significant.
|
|
|
|
<LI><TT>fl_numericsort</TT> - The files are sorted in
|
|
ascending "alphanumeric" order, where an
|
|
attempt is made to put unpadded numbers in consecutive
|
|
order; upper- and lowercase letters are compared
|
|
according to their ASCII ordering - uppercase before
|
|
lowercase.
|
|
|
|
</UL>
|
|
|
|
<P>You can free the returned list of files with the following
|
|
code:
|
|
|
|
<UL><PRE>
|
|
for (int i = return_value; i > 0;) {
|
|
free((void*)(list[--i]));
|
|
}
|
|
|
|
free((void*)list);
|
|
</PRE></UL>
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_filename_match">fl_filename_match</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/filename.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
int fl_filename_match(const char *f, const char *pattern);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Returns non-zero if <tt>f</tt> matches <tt>pattern</tt>. The
|
|
following syntax is used by <tt>pattern</tt>:
|
|
|
|
<UL>
|
|
|
|
<LI><tt>*</tt> matches any sequence of 0 or more
|
|
characters.</LI>
|
|
|
|
<LI><tt>?</tt> matches any single character.</LI>
|
|
|
|
<LI><tt>[set]</tt> matches any character in the set. Set
|
|
can contain any single characters, or a-z to represent a
|
|
range. To match ] or - they must be the first
|
|
characters. To match ^ or ! they must not be the first
|
|
characters.</LI>
|
|
|
|
<LI><tt>[^set] or <B>[!set]</B></tt> matches any
|
|
character not in the set.</LI>
|
|
|
|
<LI><tt>{X|Y|Z} or <B>{X,Y,Z}</B></tt> matches any one of the
|
|
subexpressions literally.</LI>
|
|
|
|
<LI><tt>\x</tt> quotes the character x so it has no
|
|
special meaning.</LI>
|
|
|
|
<LI><tt>x</tt> all other characters must be matched
|
|
exactly.</LI>
|
|
|
|
</UL>
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_filename_name">fl_filename_name</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/filename.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
const char *fl_filename_name(const char *f);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Returns a pointer to the character after the last slash, or
|
|
to the start of the filename if there is none.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_filename_relative">fl_filename_relative</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/filename.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
int fl_filename_relative(char *to, int tolen, const char *from);
|
|
int fl_filename_relative(char *to, const char *from);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Converts an absolute pathname to an relative pathname. The
|
|
relative pathname is copied to <tt>to</tt>; <tt>from</tt> and
|
|
<tt>to</tt> may point to the same buffer.
|
|
<TT>fl_filename_relative</TT> returns non-zero if any changes
|
|
were made.
|
|
|
|
<P>The first form accepts a maximum length (<TT>tolen</TT>) for
|
|
the destination buffer, while the second form assumes that the
|
|
destination buffer is at least <TT>FL_PATH_MAX</TT> characters
|
|
in length.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_filename_setext">fl_filename_setext</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/filename.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
char *fl_filename_setext(char *to, int tolen, const char *ext);
|
|
char *fl_filename_setext(char *to, const char *ext);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Replaces the extension in <TT>to</TT> with the extension in
|
|
<TT>ext</TT>. Returns a pointer to <tt>to</tt>.
|
|
|
|
<P>The first form accepts a maximum length (<TT>tolen</TT>) for
|
|
the destination buffer, while the second form assumes that the
|
|
destination buffer is at least <TT>FL_PATH_MAX</TT> characters
|
|
in length.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_gray_ramp">fl_gray_ramp</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include File</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/fl_draw.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
Fl_Color fl_gray_ramp(int i);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Returns a gray color value from black (<TT>i == 0</TT>) to
|
|
white (<TT>i == FL_NUM_GRAY - 1</TT>). <TT>FL_NUM_GRAY</TT> is
|
|
defined to be 24 in the current FLTK release. To get the closest
|
|
FLTK gray value to an 8-bit grayscale color 'I' use:
|
|
|
|
<UL><PRE>
|
|
fl_gray_ramp(I * (FL_NUM_GRAY - 1) / 255)
|
|
</PRE></UL>
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_input2">fl_input</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/fl_ask.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
const char *fl_input(const char *label, const char *deflt = 0, ...);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Pops up a window displaying a string, lets the user edit it,
|
|
and return the new value. The cancel button returns
|
|
<tt>NULL</tt>. <I>The returned pointer is only valid until the
|
|
next time <tt>fl_input()</tt> is called</I>. Due to
|
|
back-compatability, the arguments to any printf commands in the
|
|
label are after the default value.
|
|
|
|
<P ALIGN=CENTER><IMG SRC="fl_input.gif" ALT="The fl_input window.">
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A name="fl_message">fl_message</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/fl_ask.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
void fl_message(const char *, ...);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Displays a printf-style message in a pop-up box with an
|
|
"OK" button, waits for the user to hit the button.
|
|
The message will wrap to fit the window, or may be many lines by
|
|
putting <tt>\n</tt> characters into it. The enter key is a
|
|
shortcut for the OK button.
|
|
|
|
<P ALIGN="CENTER"><IMG src="fl_message.gif" ALT="The fl_message window.">
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_message_font">fl_message_font</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/fl_ask.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
void fl_message_font(Fl_Font fontid, uchar size);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Changes the font and font size used for the messages in all
|
|
the popups.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_message_icon">fl_message_icon</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/fl_ask.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
Fl_Widget *fl_message_icon();
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Returns a pointer to the box at the left edge of all the
|
|
popups. You can alter the font, color, label, or image before
|
|
calling the functions.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_password">fl_password</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/fl_ask.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
const char *fl_password(const char *label, const char *deflt = 0, ...);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Same as <tt>fl_input()</tt>, except an <A
|
|
href=Fl_Secret_Input.html><tt>Fl_Secret_Input</tt></A> field is
|
|
used.
|
|
|
|
|
|
<!-- NEED 4in -->
|
|
<H2><A NAME="fl_rgb_color">fl_rgb_color</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include File</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/fl_draw.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
Fl_Color fl_rgb_color(uchar r, uchar g, uchar b);
|
|
Fl_Color fl_rgb_color(uchar g);
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P>Returns the 24-bit RGB color value for the specified 8-bit
|
|
RGB or grayscale values.
|
|
|
|
|
|
<!-- NEED 8in -->
|
|
<H2><A name="fl_show_colormap">fl_show_colormap</A></H2>
|
|
|
|
<HR>
|
|
|
|
<H3>Include Files</H3>
|
|
|
|
<UL><PRE>
|
|
#include <FL/fl_show_colormap.H>
|
|
</PRE></UL>
|
|
|
|
<H3>Prototype</H3>
|
|
|
|
<UL><PRE>
|
|
int fl_show_colormap(int oldcol)
|
|
</PRE></UL>
|
|
|
|
<H3>Description</H3>
|
|
|
|
<P><tt>fl_show_colormap()</tt> pops up a panel of the 256 colors
|
|
you can access with <A
|
|
href="drawing.html#fl_color"><tt>fl_color()</tt></A> and lets
|
|
the user pick one of them. It returns the new color index, or
|
|
the old one if the user types ESC or clicks outside the window.
|
|
|
|
<P ALIGN="CENTER"><IMG src="fl_show_colormap.gif" ALT="The fl_show_colormap dialog">
|
|
|
|
|
|
</BODY>
|
|
</HTML>
|