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13 Sep 2012 written in this book, that contain the Xlib function calls. Those function call generate the protocol messages that are sent to the server. The server is a piece of X Window code that performs the requests sent to it via the protocol messages. So, the client program, for example, setups the details of a window
Mapping a window causes the window to appear on the screen, as we have seen in our simple window program example. UN-mapping it causes it to be removed from the screen (although the window as a logical entity still exists). This gives the effect of making a window hidden (unmapped) and shown again (mapped).
Example[edit]. The following program creates a window with a little black square in it. /* Simple Xlib application drawing a box in a window. To Compile: gcc -O2 -Wall -o test test.c -L /usr/X11R6/lib -lX11 -lm */ #include<X11/Xlib.h> #include<stdio.h> #include<stdlib.h> // prevents error for exit on line
As an example for handling events, we will show the events.c program. This program creates a window, makes some drawings on it, and then enters an event loop. If it gets an expose event - it redraws the whole window. If it gets a left button press (or motion) event, it draws
This is meant to be a simple overview of X11 programming. Topics: Overview of X11 Programming; Header Files for X; Important X Variables; Handling Input; Drawing in the Window; Placing Text in the Window; Working with Colors; Compiling your Code . Here is code snippet which gives an example of using XEvent's.
Xlib programming: a short tutorial. I haven't found anything very satisfying on the Web as an Xlib tutorial. Many of them are too much Motif-oriented for my taste. Furthermore, I answer questions about X programming almost daily, so I've started to put together some small coursewares.
8 Feb 2015
As an example for handling events, we will show the events.c program. This program creates a window, makes some drawings on it, and then enters an event loop. If it gets an expose event - it redraws the whole window. If it gets a left button press (or motion) event, it draws
Anatomy of the most basic Xlib program. The program starts with the legal stuff: #include <X11/Xlib.h> // Every Xlib program must include this #include // I include this to test return values the lazy way #include <unistd.h> // So we got the profile for 10 seconds #define NIL (0) // A name for the void pointer. Then the
This manual is divided into two volumes. This is the first volume, the Xlib Programming Manual. It provides a conceptual introduction to Xlib, including tutorial material and numerous programming examples. Arranged by task or topic, each chapter brings together a group of Xlib functions, describes the conceptual foundation
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