win32

commit e7be9552b798a7772e4016fd65aeb80187f2c7ec
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Tue, 16 Dec 2025 12:10:51 +0900

create window

Diffstat:
A
Makefile
 | 
5
+++++
A
win32.c
 | 
42
++++++++++++++++++++++++++++++++++++++++++

2 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -0,0 +1,5 @@
+all:
+	$(CC) -I/usr/X11R6/include win32.c -L/usr/X11R6/lib -lX11 -o win32
+
+clean:
+	rm -f win32
diff --git a/win32.c b/win32.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <X11/Xlib.h>
+
+void fatal(char *msg);
+
+int main(void) {
+	Display *display = XOpenDisplay(NULL);
+	if (!display) {
+		fatal("can't open display");
+	}
+	int screen = DefaultScreen(display);
+	XSetWindowAttributes attr = {
+		.event_mask = KeyPressMask | ExposureMask,
+	};
+
+	Window window = XCreateWindow(display, DefaultRootWindow(display),
+		0, 0, 800, 600, 0,
+		DefaultDepth(display, screen),
+		InputOutput,
+		DefaultVisual(display, screen),
+		CWEventMask,
+		&attr);
+	XMapWindow(display, window);
+	XSync(display, window);
+
+	int quit = 0;
+	XEvent event;
+	while (!quit) {
+		XNextEvent(display, &event);
+		if (event.type == KeyPress && event.xkey.keycode == 49) {
+			quit = 1;
+		}
+	}
+
+	XCloseDisplay(display);
+}
+
+void fatal(char *msg) {
+	fprintf(stderr, "%s\n", msg);
+	exit(1);
+}