#include <curses.h>
#include <stdlib.h>
#define MAXSIZE 1
#define MINSIZE 0

int y_click,x_click;
int y_click2,x_click2;
int size=MINSIZE;

void where_clicked(WINDOW *win,WINDOW *win2,MEVENT pos)
{
  getbegyx(win2,y_click2,x_click2); /*linke obere Ecke von win2*/
  mouseinterval(1);
  wenclose(win,pos.y,pos.x); /*wo in win wurde geklickt*/
  y_click = pos.y;
  x_click = pos.x;
/*wurde auf die linke obere Ecke von win2*/
  if(y_click==y_click2 && x_click==x_click2)
    {
      endwin();
      exit(0);
    }
  else if(y_click==y_click2 && x_click==x_click2+39 || x_click==x_click2+78)
    { //oder wurde auf der rechten oberen Ecke geklickt
      touchwin(stdscr);
      refresh();
      if(size==MINSIZE)
        {
          delwin(win2);
          size=MAXSIZE;
        }
      else if(size==MAXSIZE)
        {
          delwin(win2);
          size=MINSIZE;
        }
  }
}


/*Verschieben des Fensters an Position der globalen Variablen*/
/* x_click und y_click die zuvor mit where_clicked() ermittelt wurden*/
void move_win_to(WINDOW *win)
{
  touchwin(stdscr);
  wrefresh(stdscr);
  mvwin(win,y_click+1,x_click+1);
  touchwin(win);
  wrefresh(win);
}


WINDOW *create_new_window(WINDOW *neues_fenster, int zeilen,
  int spalten, int hinterg, int vordergr, int begin_y, int begin_x)
{
  neues_fenster=newwin(zeilen,spalten,begin_y,begin_x);
  init_pair(1,hinterg,vorderg);
  wattrset(neues_fenster,COLOR_PAIR(1));
  box(neues_fenster,ACS_VLINE,ACS_HLINE);
  return neues_fenster;
}



int main()
{
  MEVENT pos;
  int l_maus;
  chtype button;
  WINDOW *fenster,mfenster;
  int y_alt,x_alt;

  initscr();
  if(has_colors()==TRUE)
      start_color();
  noecho();
  keypad(stdscr,TRUE);

  fenster=create_new_window(fenster,10,40,COLOR_RED,COLOR_BLUE,5,15);
  init_pair(2,COLOR_BLACK,COLOR_YELLOW);
  wattrset(fenster,COLOR_PAIR(2));
  mvwaddch(fenster,0,0,'S');
  mvwaddch(fenster,0,39,'M');
  wattrset(fenster,COLOR_PAIR(0));
  mvwprintw(fenster,2,10,"S=Fenster schliessen");
  mvwprintw(fenster,6,10,"M=Fenster maximieren");
  wrefresh(fenster);

  l_maus=mousemask(BUTTON1_RELEASED|BUTTON1_PRESSED,NULL);

  while(1)
    {
      button=wgetch(stdscr);
      if(button==KEY_MOUSE)
        {
          if(getmouse(&pos)==OK)
            {
              where_clicked(stdscr,fenster,pos);
              //move_win_to(fenster);
             if(size==MAXSIZE)
              {
                fenster=create_new_window(fenster,24,79,COLOR_RED,COLOR_BLUE,0,0);
                wattrset(fenster,COLOR_PAIR(2));
                mvwaddch(fenster,0,0,'S');
                mvwaddch(fenster,0,78,'M');
                wattrset(fenster,COLOR_PAIR(0));
                mvwprintw(fenster,10,30,"S=Fenster schliessen");
                mvwprintw(fenster,14,30,"M=Fenster minimieren");
                wrefresh(fenster);
              }
            else if(size==MINSIZE)
              {
               fenster=create_new_window(fenster,10,40,COLOR_RED,COLOR_BLUE,5,15);
                 init_pair(2,COLOR_BLACK,COLOR_YELLOW);
                 wattrset(fenster,COLOR_PAIR(2));
                 mvwaddch(fenster,0,0,'S');
                 mvwaddch(fenster,0,39,'M');
                 wattrset(fenster,COLOR_PAIR(0));
                 mvwprintw(fenster,2,10,"S=Fenster schliessen");
                 mvwprintw(fenster,6,10,"M=Fenster maximieren");
                 wrefresh(fenster);
                 move_win_to(fenster);
               }
           }
      }
   }
  endwin();
return 0;
}