introduce box widget

examples/basic/box.c

@@ -0,0 +1,63 @@
+#include <Mw/Milsko.h>
+
+MwWidget window, box;
+
+void resize(MwWidget handle, void* user, void* client) {
+	int ww = MwGetInteger(handle, MwNwidth);
+	int wh = MwGetInteger(handle, MwNheight);
+
+	(void)user;
+	(void)client;
+
+	MwVaApply(box,
+		  MwNwidth, ww,
+		  MwNheight, wh,
+		  NULL);
+}
+
+int main() {
+	MwWidget box2, box3;
+
+	MwLibraryInit();
+
+	window = MwVaCreateWidget(MwWindowClass, "main", NULL, MwDEFAULT, MwDEFAULT, 200, 200,
+				  MwNtitle, "box",
+				  NULL);
+
+	box = MwVaCreateWidget(MwBoxClass, "box", window, 0, 0, 0, 0,
+			       MwNpadding, 10,
+			       NULL);
+
+	box2 = MwVaCreateWidget(MwBoxClass, "box2", box, 0, 0, 0, 0,
+				MwNpadding, 10,
+				MwNorientation, MwVERTICAL,
+				NULL);
+
+	box3 = MwVaCreateWidget(MwBoxClass, "box3", box, 0, 0, 0, 0,
+				MwNpadding, 10,
+				MwNorientation, MwVERTICAL,
+				NULL);
+
+	MwVaCreateWidget(MwButtonClass, "btn1", box2, 0, 0, 0, 0,
+			 MwNbackground, "#a00",
+			 NULL);
+
+	MwVaCreateWidget(MwButtonClass, "btn2", box2, 0, 0, 0, 0,
+			 MwNbackground, "#0a0",
+			 MwNboxRatio, 2,
+			 NULL);
+
+	MwVaCreateWidget(MwButtonClass, "btn3", box2, 0, 0, 0, 0,
+			 MwNbackground, "#00a",
+			 NULL);
+
+	MwVaCreateWidget(MwButtonClass, "btn4", box3, 0, 0, 0, 0,
+			 MwNbackground, "#00a",
+			 NULL);
+
+	MwAddUserHandler(window, MwNresizeHandler, resize, NULL);
+
+	resize(window, NULL, NULL);
+
+	MwLoop(window);
+}