Adding close button.

layout.arrows.h

@@ -5,6 +5,7 @@ static Key keys[] = {
 	{ "↑", XK_Up, 1 },
 	{ "→", XK_Right, 1},
 	{ "Alt", XK_Alt_L, 2 },
+	{ "[X]", XK_Cancel, 1 },
 };
 
 Buttonmod buttonmods[] = {

layout.de.h

@@ -64,6 +64,7 @@ static Key keys[] = {
 	{ "Alt Gr", XK_ISO_Level3_Shift, 2 },
 	{ "Menu", XK_Menu, 2 },
 	{ "Ctrl", XK_Control_R, 2 },
+	{ "[X]", XK_Cancel, 1},
 };
 
 Buttonmod buttonmods[] = {

layout.en.h

@@ -60,6 +60,7 @@ static Key keys[] = {
 	{ "", XK_space, 5 },
 	{ "Alt", XK_Alt_R, 2 },
 	{ "Ctrl", XK_Control_R, 2 },
+	{ "[X]", XK_Cancel, 1},
 };
 
 Buttonmod buttonmods[] = {

svkbd.c

@@ -297,6 +297,13 @@ press(Key *k, KeySym mod) {
 	int i;
 	k->pressed = !k->pressed;
 
+	switch(k->keysym) {
+	case XK_Cancel:
+		exit(0);
+	default:
+		break;
+	}
+
 	if(!IsModifierKey(k->keysym)) {
 		for(i = 0; i < LENGTH(keys); i++)
 			if(keys[i].pressed && IsModifierKey(keys[i].keysym))