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diff --git a/blt/html/BLT.html b/blt/html/BLT.html new file mode 100644 index 00000000000..03317c2bae6 --- /dev/null +++ b/blt/html/BLT.html @@ -0,0 +1,161 @@ + <!-- manual page source format generated by PolyglotMan v3.0.8+XFree86, --> +<!-- available via anonymous ftp from ftp.cs.berkeley.edu:/ucb/people/phelps/tcltk/rman.tar.Z --> + +<HTML> +<HEAD> +<TITLE>graph(n) manual page</TITLE> +</HEAD> +<BODY BGCOLOR="#efefef" TEXT="black" LINK="blue" VLINK="#551A8B" ALINK="red"> +<A HREF="#toc">Table of Contents</A><P> + +<H2><A NAME="sect0" HREF="#toc0">Name</A></H2> +BLT - Introduction to the BLT library +<H2><A NAME="sect1" HREF="#toc1">Description</A></H2> +BLT +is a library of extensions to the Tk library. It adds new commands and +variables to the application's interpreter. <P> + +<H2><A NAME="sect2" HREF="#toc2">Commands</A></H2> +The following commands +are added to the interpreter from the BLT library: +<DL> + +<DT><B>table</B> </DT> +<DD>A table geometry +manager for Tk. You specify window placements as table row,column positions +and windows can also span multiple rows or columns. It also has many options +for setting and/or bounding window sizes. </DD> + +<DT><B>graph</B> </DT> +<DD>A 2D plotting widget. Plots +two variable data in a window with an optional legend and annotations. + It has of several components; coordinate axes, crosshairs, a legend, +and a collection of elements and tags. </DD> + +<DT><B>barchart</B> </DT> +<DD>A barchart widget. Plots +two-variable data as rectangular bars in a window. The x-coordinate values +designate the position of the bar along the x-axis, while the y-coordinate +values designate the magnitude. The <B>barchart</B> widget has of several components; +coordinate axes, crosshairs, a legend, and a collection of elements and +tags. </DD> + +<DT><B>vector</B> </DT> +<DD>Creates a vector of floating point values. The vector's components +can be manipulated in three ways: through a Tcl array variable, a Tcl command, +or the C API. </DD> + +<DT><B>spline</B> </DT> +<DD>Computes a spline fitting a set of data points (x and +y vectors) and produces a vector of the interpolated images (y-coordinates) +at a given set of x-coordinates. </DD> + +<DT><B>bgexec</B> </DT> +<DD>Like Tcl's <B>exec</B> command, <B>bgexec</B> runs +a pipeline of Unix commands in the background. Unlike <B>exec</B>, the output +of the last process is collected and a global Tcl variable is set upon +its completion. <B>bgexec</B> can be used with <B>tkwait</B> to wait for Unix commands +to finish while still handling expose events. Intermediate output is also +available while the pipeline is active. </DD> + +<DT><B>busy</B> </DT> +<DD>Creates a "busy window" which +prevents user-interaction when an application is busy. The busy window also +provides an easy way to have temporary busy cursors (such as a watch or +hourglass). </DD> + +<DT><B>bitmap</B> </DT> +<DD>Reads and writes bitmaps from Tcl. New X bitmaps can +be defined on-the-fly from Tcl, obviating the need to copy around bitmap +files. Other options query loaded X bitmap's dimensions and data. </DD> + +<DT><B>drag&drop</B> + </DT> +<DD>Provides a drag-and-drop facility for Tk. Information (represented by a +token window) can be dragged to and from any Tk window, including those +of another Tk application. <B>drag&drop</B> acts as a coordinator, directing Tk +<B>send</B> commands between (or within) TCL/Tk applications. </DD> + +<DT><B>htext</B> </DT> +<DD>A simple +hypertext widget. Combines text and Tk widgets into a single scroll-able +window. Tcl commands can be embedded into text, which are invoked as the +text is parsed. In addition, Tk widgets can be appended to the window at +the current point in the text. <B>Htext</B> can be also used to create scrolled +windows of Tk widgets. </DD> + +<DT><B>winop</B> </DT> +<DD>Raise, lower, map, or, unmap any window. The +raise and lower functions are useful for stacking windows above or below +"busy windows". </DD> + +<DT><B>watch</B> </DT> +<DD>Arranges for Tcl procedures to be called before and/or +after the execution of every Tcl command. This command may be used in the +logging, profiling, or tracing of Tcl code. </DD> + +<DT><B>bltdebug</B> </DT> +<DD>A simple Tcl command +tracing facility useful for debugging Tcl code. Displays each Tcl command +before and after substitution along its level in the interpreter on standard +error. </DD> +</DL> + +<H2><A NAME="sect3" HREF="#toc3">Variables</A></H2> +<P> +The following Tcl variables are either set or used by BLT +at various times in its execution: +<DL> + +<DT><B>blt_library</B> </DT> +<DD>This variable contains the +name of a directory containing a library of Tcl scripts and other files +related to BLT. Currently, this directory contains the <B>drag&drop</B> protocol +scripts and the PostScript prolog used by <B>graph</B> and <B>barchart</B>. The value +of this variable is taken from the BLT_LIBRARY environment variable, if +one exists, or else from a default value compiled into the <B>BLT</B> library. +</DD> + +<DT><B>blt_versions</B> </DT> +<DD>This variable is set in the interpreter for each application. +It is an array of the current version numbers for each of the BLT commands +in the form <I>major</I>.<I>minor</I>. <I>Major</I> and <I>minor</I> are integers. The major version +number increases in any command that includes changes that are not backward +compatible (i.e. whenever existing applications and scripts may have to change +to work with the new release). The minor version number increases with +each new release of a command, except that it resets to zero whenever the +major version number changes. The array is indexed by the individual command +name. </DD> +</DL> + +<H2><A NAME="sect4" HREF="#toc4">Adding Blt to Your Applications</A></H2> +It's easy to add BLT to an existing +Tk application. BLT requires no patches or edits to the Tcl or Tk libraries. + To add BLT, simply add the following code snippet to your application's +tkAppInit.c file. <BR> +<CODE>if (Blt_Init(interp) != TCL_OK) {<BR> + return TCL_ERROR;<BR> +}<BR> +</CODE><P>Recompile and link with the BLT library (libBLT.a) and that's it. <P> +Alternately, +you can dynamically load BLT, simply by invoking the command <BR> +<CODE>package require BLT<BR> +</CODE><P>from your Tcl script. +<H2><A NAME="sect5" HREF="#toc5">Bugs</A></H2> +Send bug reports, requests, suggestions, etc. to + gah@siliconmetrics.com or gah@myfirstlink.net +<H2><A NAME="sect6" HREF="#toc6">Keywords</A></H2> +BLT <P> + +<HR><P> +<A NAME="toc"><B>Table of Contents</B></A><P> +<UL> +<LI><A NAME="toc0" HREF="#sect0">Name</A></LI> +<LI><A NAME="toc1" HREF="#sect1">Description</A></LI> +<LI><A NAME="toc2" HREF="#sect2">Commands</A></LI> +<LI><A NAME="toc3" HREF="#sect3">Variables</A></LI> +<LI><A NAME="toc4" HREF="#sect4">Adding Blt to Your Applications</A></LI> +<LI><A NAME="toc5" HREF="#sect5">Bugs</A></LI> +<LI><A NAME="toc6" HREF="#sect6">Keywords</A></LI> +</UL> +</BODY></HTML> |