mirror of
https://github.com/moparisthebest/FireTray
synced 2024-11-17 22:35:02 -05:00
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
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/*
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Compiled as:
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gcc -Wall x11XGetWindowProp.c -o x11XGetWindowProp -lm -lXext -lX11
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xatom.h>
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int main(void)
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{
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int screen, idx, stride;
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int X, Y, W, H;
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Atom actual;
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unsigned long count, remaining;
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int format = 32;
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int request_size = 4 * sizeof(long);
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unsigned char *xywh;
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Display *d = XOpenDisplay(0);
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if (!d) printf("Can't open display: %s",XDisplayName(0));
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Atom _NET_WORKAREA = XInternAtom(d, "_NET_WORKAREA", 0);
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screen = DefaultScreen(d);
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/* Find the total screen size (assume X = Y = 0)*/
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W = DisplayWidth(d, screen);
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H = DisplayHeight(d, screen);
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printf("Display Area: W: %d, H: %d\n", W, H);
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/* New query the server to find the usable screen size */
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if (XGetWindowProperty(d, RootWindow(d, screen),
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_NET_WORKAREA, 0, request_size, False,
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XA_CARDINAL, &actual, &format, &count, &remaining, &xywh) || !xywh)
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{
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printf("Get workarea failed\n");
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}
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else
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{
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printf("Got workarea OK\n");
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printf("format: %d, count: %ld, remaining: %ld\n", format, count, remaining);
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/* How many bytes per sample? */
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stride = format / 8;
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X = *(int*)&xywh[0];
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Y = *(int*)&xywh[stride];
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W = *(int*)&xywh[stride * 2];
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H = *(int*)&xywh[stride * 3];
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/* Now print out the raw xywh byte array for checking */
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for(idx = 0; idx < request_size; idx++)
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{
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printf("%02X ", xywh[idx]);
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if(!((idx +1)%8)) puts(" ");
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}
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/* release the xywh resources */
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XFree(xywh);
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printf("Usable Area: X: %d, Y: %d W: %d, H: %d\n", X, Y, W, H);
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}
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return 0;
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}
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/* End of File */
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