Kontron KTAM3874-pITX - Manual (Page 120)

KTD-S0057-I Page 116 Linux® Programming Examples (DebianTM)
KTAM3874/pITX Software Guide
10.12 Graphic Programming
10.12.1 X11 TM
X11 TM realizes a client/server architecture and supports graphical screen output as well as keyboard and
mouse input. The following example only gives a small overview about the X11 TM features. First you can see
two buttons and after click on the centered button the program shows the screen below.
But there exist two restrictions: program execution via the serial remote interface is not possible and the
program is only checked with an HDMI
® monitor. For cross compilation the addition of the X11 TM lib within
the Makefile may be necessary, e.g. LDFLAGS := -l X11 . If so copy the library from the target hardware to a
search path and if required create a new link or rename the file to libX11.so (see previous chapter).
/***************************************************************
* X11 demonstration program
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
****************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "picture.xbm"
#define TRUE 1
#define LEFT 200
#define TOP 200
#define WIDTH 400
#define HEIGHT 216
#define BORDER 4
#define BACKGND_COL "seagreen"
#define HEADER "BUTTONTEST"
#define BTN_WIDTH 90
#define BTN_HEIGHT 30
#define BTN_LINECOL "gray32"
#define BTN_GRAYCOL "lightgray"
#define BTN_BLUECOL "cornflowerblue"
#define BTN_TEXTCOL "navy"