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/* Compile with "gcc -o wm_hints -Wall wm_hints.c -lX11" */
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
int main(int argc, char** argv)
{
Display* display = XOpenDisplay(NULL);
if (!display) {
fprintf(stderr, "Couldn't open display\n");
return 1;
}
int screen = DefaultScreen(display);
const int width = 300, height = 200;
unsigned long black = BlackPixel(display, screen);
unsigned long white = WhitePixel(display, screen);
Window win = XCreateSimpleWindow(display,
RootWindow(display, screen),
0, /* x */
0, /* y */
width,
height,
0, /* border_width */
black, /* border */
white); /* background */
Atom windowState = XInternAtom(display, "_NET_WM_STATE", False);
Atom vertMaxState = XInternAtom(display, "_NET_WM_STATE_MAXIMIZED_VERT", False);
Atom horzMaxState = XInternAtom(display, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
Atom data[2] = { vertMaxState, horzMaxState };
XChangeProperty(display, win, windowState, XA_ATOM, 32, PropModeReplace, (unsigned char *)data, 2);
XMapWindow(display, win);
XFlush(display);
while (1) {
printf("Setting hints\n");
XWMHints *hints = XAllocWMHints();
hints->flags = StateHint;
hints->initial_state = NormalState;
XSetWMHints(display, win, hints);
XFree(hints);
XFlush(display);
sleep(20);
}
return 0;
}
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