Init

build

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+gcc main.c -g -o ../build/main -lX11

main.c

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+#include <stdio.h>
+#include <unistd.h>
+#include <X11/Xlib.h>
+
+int main()
+{
+	Display *display = XOpenDisplay(NULL);
+	Window main_window = XDefaultRootWindow(display);
+	Window window = XCreateSimpleWindow(display, main_window, 0, 0, 250, 250, 1, 0, 0x00aade87);
+	XMapWindow(display, window);
+	XFlush(display);
+
+	for(;;) { sleep(1); }
+
+	return 0;
+}

run

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+./../build/main