Three Windows

#include "graphapp.h"

window w, w1, w2;

void show_win_1 (button b)
{
  show(w1); /* do whatever else is needed to show window 1 */
}

void show_win_2 (button b)
{
  show(w2); /* do whatever else is needed to show window 2 */
}

void close_win_1 (button b)
{
  hide(w1); /* do whatever else is needed to hide window 1 */
}

void close_win_2 (button b)
{
  hide(w2); /* do whatever else is needed to hide window 2 */
}

void quit(button b)
{
  /* do whatever is needed when exiting the program */
  exitapp();
}

void main(void)
{
  w = newwindow("Control Panel", rect(10,20,300,130),
                         StandardWindow);
  newbutton("See window 1", rect(10,10,180,30), show_win_1);
  newbutton("See window 2", rect(10,50,180,30), show_win_2);
  newbutton("Quit", rect(10,90,180,30), quit);
  show(w);

  w1 = newwindow("Window 1", rect(330,20,300,250),
                         StandardWindow);
  newbutton("Close", rect(10,10,80,30), close_win_1);

  w2 = newwindow("Window 2", rect(10,190,300,250),
                         StandardWindow);
  newbutton("Close", rect(10,10,80,30), close_win_2);

  mainloop();
}

• Source code: win3.c