Quote from Forum Archives on September 1, 2011, 8:26 pm

Posted by: svanvoorst <svanvoorst@...>

This demo starts to add controls to the window and demonstrates a controller and delegate.  Three ways to quit the application are shown: quit menu, quit button, and window close button.  These are basic closure methods and would be more complex if we needed to check for changes which had been made by the user.

'---- start -----

BeginCDeclaration

@interface AppDelegate : NSObject

//methods automatically called

@end //interface

EndC

BeginCFunction

@implementation AppDelegate

// --- Taken from NSApplicationDelegate Protocol Reference ---- //

-(BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *) theApp;

{

   return YES;

}

@end //implementation

EndC

BeginCDeclaration

@interface AppController : NSObject

{

}

// ---- Methods listed here ---- //

- (void) myBtnAction:(id)sender;

@end //interface

EndC

BeginCFunction

@implementation AppController

// --- Methods defined here ---- //

-(void) myBtnAction:(id)sender

{

  NSBeep();

}

@end //implementation

EndC

BeginCCode

{

 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init];

 

  [NSApplication sharedApplication];

  [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];

// --- Menu bar and menus ---- //

   id menubar = [[NSMenu new] autorelease];

   id appMenuItem = [[NSMenuItem new] autorelease];

   [menubar addItem:appMenuItem];

   [NSApp setMainMenu:menubar];

   id appMenu = [[NSMenu new] autorelease];

   id quitMenuItem = [[[NSMenuItem alloc] initWithTitle:@"Quit"

        action:@selector(terminate:) keyEquivalent:@"q"] autorelease];

   [appMenu addItem:quitMenuItem];

   [appMenuItem setSubmenu:appMenu];

// ---- Window ------- //

   #define _wndW  430

   #define _wndH  300

   id window = [ [ NSWindow alloc ] 

                    initWithContentRect:NSMakeRect( 0, 0, _wndW, _wndH )

                    styleMask: NSClosableWindowMask | NSTitledWindowMask

                    backing:NSBackingStoreBuffered

                    defer:NO];

   [window center];

   [window setTitle: @"Controller/Delegate_demo" ];

   [window makeKeyAndOrderFront:nil]; 

// Create an instance of AppDelegate (NSObject)

  id myDelegate = [[AppDelegate alloc]init];

  [NSApp setDelegate:myDelegate];

// Create an instance of AppController (NSObject)

  id myController = [[AppController alloc]init];

  NSButton*btn = [[NSButton alloc]initWithFrame:NSMakeRect( 100, _wndH - 100, 150, 30 )];

  [[window contentView] addSubview: btn];

  [btn setBezelStyle:NSRoundedBezelStyle ];

  [btn setTitle: @"Beep" ];

  [btn setTarget:myController];

  [btn setAction:@selector(myBtnAction:)];

  [btn release];

  NSButton *quitBtn = [[NSButton alloc]initWithFrame:NSMakeRect( _wndW - 130, 30, 95, 30 )];

  [quitBtn setBezelStyle:NSRoundedBezelStyle ];

  [quitBtn setTitle: @"Quit" ];

  [quitBtn setAction:@selector(terminate:)];

  [[window contentView] addSubview: quitBtn];

  [quitBtn release];

  [NSApp activateIgnoringOtherApps:YES];

  [NSApp run];

  [pool drain];

  return NSApplicationMain(argc,  (const char **) argv);

}

EndC

'------ end -----

Steve Van Voorst

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