/* Example1                                                            */
/* This program will open a normal window which is connected to the    */
/* Workbench Screen. The window will use all System Gadgets, and will  */
/* close first when the user has selected the System gadget Close      */
/* window. (Same as Example3 in chapter 2 WINDOWS, except that we have */
/* added an IDCMP check on the Close window gadget.)                   */

/* Extra information:                                                    */
/* This program will quit first when the user has selected the Close     */
/* window gadget. To tell Intuition that we want the System gadget Close */
/* window to send us a message when the user selects it, we only need to */
/* set the CLOSEWINDOW flag in the IDCMPFlags field.                     */



#include <intuition/intuition.h>



struct IntuitionBase *IntuitionBase;



/* Declare a pointer to a Window structure: */ 
struct Window *my_window;

/* Declare and initialize your NewWindow structure: */
struct NewWindow my_new_window=
{
  50,            /* LeftEdge    x position of the window. */
  25,            /* TopEdge     y positio of the window. */
  200,           /* Width       200 pixels wide. */
  100,           /* Height      100 lines high. */
  0,             /* DetailPen   Text should be drawn with colour reg. 0 */
  1,             /* BlockPen    Blocks should be drawn with colour reg. 1 */
  CLOSEWINDOW,   /* IDCMPFlags  The window will give us a message if the */
                 /*             user has selected the Close window gad. */
  SMART_REFRESH| /* Flags       Intuition should refresh the window. */
  WINDOWCLOSE|   /*             Close Gadget. */
  WINDOWDRAG|    /*             Drag gadget. */
  WINDOWDEPTH|   /*             Depth arrange Gadgets. */
  WINDOWSIZING|  /*             Sizing Gadget. */
  ACTIVATE,      /*             The window should be Active when opened. */
  NULL,          /* FirstGadget No Custom gadgets. */
  NULL,          /* CheckMark   Use Intuition's default CheckMark. */
  "CLOSE ME",    /* Title       Title of the window. */
  NULL,          /* Screen      Connected to the Workbench Screen. */
  NULL,          /* BitMap      No Custom BitMap. */
  80,            /* MinWidth    We will not allow the window to become */
  30,            /* MinHeight   smaller than 80 x 30, and not bigger */
  300,           /* MaxWidth    than 300 x 200. */
  200,           /* MaxHeight */
  WBENCHSCREEN   /* Type        Connected to the Workbench Screen. */
};



main()
{
  /* Boolean variable used for the while loop: */
  BOOL close_me;

  /* Declare a variable in which we will store the IDCMP flag: */
  ULONG class;
  
  /* Declare a pointer to an IntuiMessage structure: */
  struct IntuiMessage *my_message;



  /* Before we can use Intuition we need to open the Intuition Library: */
  IntuitionBase = (struct IntuitionBase *)
    OpenLibrary( "intuition.library", 0 );
  
  if( IntuitionBase == NULL )
    exit(); /* Could NOT open the Intuition Library! */



  /* We will now try to open the window: */
  my_window = (struct Window *) OpenWindow( &my_new_window );
  
  /* Have we opened the window succesfully? */
  if(my_window == NULL)
  {
    /* Could NOT open the Window! */
    
    /* Close the Intuition Library since we have opened it: */
    CloseLibrary( IntuitionBase );

    exit();  
  }



  /* We have opened the window, and everything seems to be OK. */



  close_me = FALSE;

  /* Stay in the while loop until the user has selected the Close window */
  /* gadget: */
  while( close_me == FALSE )
  {
    /* Wait until we have recieved a message: */
    Wait( 1 << my_window->UserPort->mp_SigBit );

    /* Collect the message: */
    my_message = (struct IntuiMessage *) GetMsg( my_window->UserPort );
    /* Ahhh, these paranoid compilers... */

    /* Have we collected the message sucessfully? */
    if(my_message)
    {
      /* After we have collected the message we can read it, and save any */
      /* important values which we maybe want to check later: */
      class = my_message->Class;

      /* After we have read it we reply as fast as possible: */
      /* REMEMBER! Do never try to read a message after you have replied! */
      /* Some other process has maybe changed it. */
      ReplyMsg( my_message );

      /* Check which IDCMP flag was sent: */
      if( class == CLOSEWINDOW )
        close_me=TRUE; /* The user selected the Close window gadget! */  
    }
  }



  /* We should always close the windows we have opened before we leave: */
  CloseWindow( my_window );



  /* Close the Intuition Library since we have opened it: */
  CloseLibrary( IntuitionBase );
  
  /* THE END */
}