commit 8a298c4

adapt pixmap size

 1@@ -22,7 +22,7 @@ int main(void)
 2 			100, 100, wi, hi, 0, BlackPixel(d,s), 
 3 			WhitePixel(d, s));
 4 	XStoreName(d, w, "xd");
 5-	XSelectInput(d, w, ExposureMask|KeyPressMask|
 6+	XSelectInput(d, w, ExposureMask|KeyPressMask|StructureNotifyMask|
 7 			ButtonPressMask|ButtonReleaseMask|
 8 			PointerMotionMask);
 9 	XMapWindow(d, w);
10@@ -46,19 +46,35 @@ int main(void)
11 
12 		switch(ev.type)
13 		{
14-			case Expose: {
15-				XWindowAttributes at;
16-				if(XGetWindowAttributes(d,w,&at))
17+			case Expose:
18+				XCopyArea(d,p,w,gc,0,0,wi,hi,0,0);
19+				break;
20+			case ConfigureNotify:
21+				if(ev.xconfigure.width!=wi||ev.xconfigure.height!=hi)
22 				{
23-					wi=at.width;
24-					hi=at.height;
25-				} else {
26-					fprintf(stderr, "couldnt resize pixmap\n");
27-				}
28+					Pixmap l=XCreatePixmap(d,w,
29+							ev.xconfigure.width,ev.xconfigure.height,
30+							DefaultDepth(d,s));
31 
32-				XCopyArea(d,p,w,gc,0,0,wi,hi,0,0);
33+					XSetForeground(d, gc, WhitePixel(d,s));
34+					XFillRectangle(d, l,gc,0,0,wi,hi);
35+
36+					int cw = wi < ev.xconfigure.width ? wi : ev.xconfigure.width;
37+					int ch = hi < ev.xconfigure.height ? hi : ev.xconfigure.height;
38+
39+					XCopyArea(d,p,l,gc,0,0,\
40+							//ev.xconfigure.width,ev.xconfigure.height,
41+							cw,ch,
42+							0,0); /* copy old pixmap to new pixmap */
43+					XFreePixmap(d,p);
44+					p=l;
45+
46+					wi=ev.xconfigure.width;
47+					hi=ev.xconfigure.height;
48+
49+					XCopyArea(d,p,w,gc,0,0,wi,hi,0,0);
50+				}
51 				break;
52-			}
53 			case ButtonPress:
54 				if(ev.xbutton.button==Button1)
55 				{
56@@ -74,7 +90,6 @@ int main(void)
57 				}
58 				break;
59 			case MotionNotify:
60-
61 				if (dr)
62 				{
63 					XSetForeground(d, gc, er ? WhitePixel(d,s) : BlackPixel(d,s));