#include "gwin.user.h" main() { float x, y; int event; char key; USTART("high2",30.,600.,100.,300.); upset(G,"colo",1.0); uprint(G,5.,80.,"Place cursor in yellow area"); uprint(G,5.,75.,"and press left mouse button."); udarea(G,50.,80.,50.,100.); uwindo(G,0.,50.,0.,50.); upset(G,"colo",5.0); uset(G,"fill"); uoutln(G); uset(G,"nofi"); upset(G,"colo",4.0); while (1){ if(ugrin(G,&x,&y)) {UEND();exit(0);}; umove(G,x-5.0,y); udraw(G,x+5.0,y); umove(G,x,y-5.0); udraw(G,x,y+5.0); uset(G,"fill"); uplygn(G,x,y,4.0,4.0); uset(G,"nofi"); } }