CODEWITHSUNDEEP
objective-ccocoanibnswindownsapplication
brigadir
brigadir

Reputation: 6942

Show NSWindow from separate nib (not modal)

How to do it? I simply want to load a window and show it in front of the main window.

NSWindowController* controller = [[NSWindowController alloc] initWithWindowNibName: @"MyWindow"];
NSWindow* myWindow = [controller window];
[myWindow makeKeyAndOrderFront: nil];

This code shows the window for one moment and then hides it. IMHO this is because I don't keep reference to the window (I use ARC). [NSApp runModalForWindow: myWindow]; works perfectly but I don't need to show it modally.

Upvotes: 3

Views: 3644

Answers (2)

NSGod
NSGod

Reputation: 22948

You should likely do something similar to the following, which creates a strong reference to the NSWindowController instance you create:

.h:

@class MDWindowController;
@interface MDAppDelegate : NSObject <NSApplicationDelegate> {
    __weak IBOutlet NSWindow        *window;
    MDWindowController              *windowController;
}
@property (weak) IBOutlet NSWindow *window;
@property (strong) MDWindowController *windowController;

- (IBAction)showSecondWindow:(id)sender;
@end

.m:

#import "MDAppDelegate.h"
#import "MDWindowController.h"

@implementation MDAppDelegate

@synthesize window;
@synthesize windowController;

- (IBAction)showSecondWindow:(id)sender {
    if (windowController == nil) windowController =
                        [[MDWindowController alloc] init];
    [windowController showWindow:nil];
}

@end

Note that rather than sending the makeKeyAndOrderFront: method directly to the NSWindowController's NSWindow, you can just use NSWindowController's built-in showWindow: method.

While the above code (and sample project below) use a custom subclass of NSWindowController, you also use a generic NSWindowController and create the instance using initWithWindowNibName: (just make sure the File's Owner of the nib file is set to NSWindowController rather than a custom subclass like MDWindowController).

Sample project:

http://www.markdouma.com/developer/MDWindowController.zip

Upvotes: 1

torrey.lyons
torrey.lyons

Reputation: 5589

Yes, with ARC if you don't hold a reference to the window it will be torn down as soon you as you exit the routine you were in. You need to hold a strong reference to it in an ivar. [NSApp runModalForWindow: myWindow] is different because the NSApplication object holds a reference to the window as long as it is being run modally.

Upvotes: 6

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