A simple Xlib program
For a long time, Xlib remained a mystery to me. My head grew bigger
whenever I saw a function starting with an X
.
But today I came up with a very simple Xlib program which made me think it’s probably not more complicated than OpenGL. I believe this program will be helpful to everyone in building confidence while learning Xlib. Therefore I decide to share it in public to help more people pick up their confidence.
Here’s the program:
// A simple Xlib program.
//
// Copyright (C) 2016 Cyker Way
#include <X11/Xlib.h>
int main()
{
Display *d = XOpenDisplay(NULL);
int white = WhitePixel(d, DefaultScreen(d));
Window w = XCreateSimpleWindow(
d, DefaultRootWindow(d), 0, 0, 640, 480, 0, white, white);
XMapWindow(d, w);
XFlush(d);
while (1);
}
The program creates a new window at position (0, 0) with size (640, 480), border width 0 and background white.
Compile and run with:
gcc -o demo demo.c -lX11 && ./demo