Simple windowed application: Difference between revisions

=={{header|Objective-C}}==

{{works with|GNUstep}}

<lang objc>#include <Foundation/Foundation.h>

#include <AppKit/AppKit.h>

@interface ClickMe : NSWindow

{

NSButton *button;

NSTextField *text;

int counter;

}

- (void)applicationDidFinishLaunching: (NSNotification *)notification;

- (BOOL)applicationShouldTerminateAfterLastWindowClosed: (NSNotification *)notification;

- (void)advanceCounter: (id)sender;

@end</lang>

<lang objc>@implementation ClickMe : NSWindow

-(id) init

{

NSRect buttonRect;

int totalWindowHeight;

counter = 0;

button = [[NSButton alloc] init];

[button setButtonType: NSToggleButton];

[button setTitle: @"Click Me"];

[button sizeToFit];

[button setTarget: self];

[button setAction: @selector(advanceCounter:)];

buttonRect = [button frame];

text = [[NSTextField alloc]

initWithFrame: NSMakeRect(buttonRect.origin.x, buttonRect.size.height,

buttonRect.size.width, buttonRect.size.height)];

[text setAlignment: NSCenterTextAlignment];

[text setEditable: NO];

[text setStringValue: @"There have been no clicks yet"];

[text sizeToFit];

// reset size of button according to size of (larger...?) text

[button

setFrameSize: NSMakeSize( [text frame].size.width, buttonRect.size.height ) ];

totalWindowHeight = buttonRect.size.height + [text frame].size.height;

[self

initWithContentRect: NSMakeRect(100, 100,

[text frame].size.width, totalWindowHeight)

styleMask: (NSTitledWindowMask | NSClosableWindowMask)

backing: NSBackingStoreBuffered

defer: NO];

[[self contentView] addSubview: text]; [text release];

[[self contentView] addSubview: button]; [button release];

[self setTitle: @"Click Me!"];

[self center];

return self;

}

-(void) dealloc

{

[super dealloc];

}

- (void)applicationDidFinishLaunching: (NSNotification *)notification

{

[self orderFront: self];

}

- (BOOL)applicationShouldTerminateAfterLastWindowClosed: (NSNotification *)notification

{

return YES;

}

- (void)advanceCounter: (id)sender

{

counter++;

[text setIntValue: counter];

}

@end

int main()

{

ClickMe *clickme;

NSAutoreleasePool *pool;

NSApplication *app;

pool = [[NSAutoreleasePool alloc] init];

app = [NSApplication sharedApplication];

clickme = [[ClickMe alloc] init];

[app setDelegate: clickme];

[app run];

return 0;

}</lang>