commit 956b246

background color

 1@@ -5,7 +5,7 @@
 2 #include<stdio.h>
 3 #include<stdlib.h>
 4 
 5-int main(void)
 6+int main(int ac, char **av)
 7 {
 8 	int wi=640, hi=480;
 9 
10@@ -18,6 +18,10 @@ int main(void)
11 
12 	int s=DefaultScreen(d);
13 
14+	XColor bg;
15+	XParseColor(d, DefaultColormap(d, s), av[1] ? av[1] : "#ffffff", &bg);
16+	XAllocColor(d, DefaultColormap(d, s), &bg);
17+
18 	Window w=XCreateSimpleWindow(d, RootWindow(d, s),
19 			100, 100, wi, hi, 0, BlackPixel(d,s), 
20 			WhitePixel(d, s));
21@@ -28,7 +32,7 @@ int main(void)
22 	XMapWindow(d, w);
23 	GC gc=XCreateGC(d, w, 0, NULL);
24 	Pixmap p=XCreatePixmap(d,w,wi,hi,DefaultDepth(d,s));
25-	XSetForeground(d, gc, WhitePixel(d,s));
26+	XSetForeground(d, gc, bg.pixel);
27 	XFillRectangle(d, p,gc,0,0,wi,hi);
28 	XSetForeground(d, gc, BlackPixel(d,s));
29 
30@@ -56,7 +60,7 @@ int main(void)
31 							ev.xconfigure.width,ev.xconfigure.height,
32 							DefaultDepth(d,s));
33 
34-					XSetForeground(d, gc, WhitePixel(d,s));
35+					XSetForeground(d, gc, bg.pixel);
36 					XFillRectangle(d, l,gc,0,0,ev.xconfigure.width,ev.xconfigure.height);
37 
38 					int cw = wi < ev.xconfigure.width ? wi : ev.xconfigure.width;
39@@ -91,7 +95,7 @@ int main(void)
40 			case MotionNotify:
41 				if (dr)
42 				{
43-					XSetForeground(d, gc, er ? WhitePixel(d,s) : BlackPixel(d,s));
44+					XSetForeground(d, gc, er ? bg.pixel : BlackPixel(d,s));
45 					XDrawLine(d,p,gc,lx,ly,
46 							ev.xmotion.x,
47 							ev.xmotion.y);
48@@ -104,7 +108,7 @@ int main(void)
49 				KeySym k=XLookupKeysym(&ev.xkey, 0);
50 				if (k==XK_q||k==XK_Escape) goto q;
51 				if (k==XK_c) {
52-					XSetForeground(d, gc, WhitePixel(d,s));
53+					XSetForeground(d, gc, bg.pixel);
54 					XFillRectangle(d, p,gc,0,0,wi,hi);
55 					XCopyArea(d,p,w,gc,0,0,wi,hi,0,0);
56 					XSetForeground(d, gc, BlackPixel(d,s));