cocoa

Add a Contextual Menu to WebView

An easy one, I think: I want to add a contextual menu to a WebView. In IB, I added a NSMenu to the NIB, connected it to the WebView's menu outlet, launched and expected to be able to control-click in the WebView and see the pop-up menu. The only item I saw on the contextual menu is "reload". I can do the same steps but connect the ...

Cocoa Core Data - Efficient Related Entities Counts

I am working on my first iPhone application and I've hit a wall. I'm trying to develop a 'statistics' page for a three entity relationship. My entities are the following: Department - Name, Address, Building, etc. People - Name, Gender (BOOL), Phone, etc If I have fetched a specific department how do I filter those results and only ret...

Using Relative Paths to Load Resources in Cocoa/C++

I am currently working directly with Cocoa for the first time to built a screen saver. Now I came across a problem when trying to load resources from within the .saver bundle. I basically have a small C++ wrapper class to load .exr files using freeImage. This works as long as I use absoulte paths, but that's not very useful, is it? So, b...

Few iPhone noob questions

Why should I declare local variables as 'static' inside a method? Like: static NSString *cellIdentifier = @"Cell"; Is it a performance advantage? (I know what 'static' does; in C context) What does this syntax mean?[someObj release], someObj = nil; Two statements? Why should I assign nil again? Is not 'release' enough? Should I do it fo...

Creating iPhoto albums using Cocoa Scripting Bridge

I'm tearing my hair out trying to create a new album from a Cocoa Application. In applescript it's a nice simple procedure: tell application "iPhoto" new album name "Album" end tell But I can't work out how this is done in Cocoa via the Scripting Bridge. I've tried this: iPhotoApplication *iPhoto = [SBApplication applicationWithB...

Ignoring namespace prefix while parsing xml

If a xhtml file has namespace prefixes in the document and the namespace for the prefixes is not defined, is it possible to ignore the prefixes and still parse the file when using SAX parser. Is there a way to get rid of the error "The prefix for element is not bound." without defining the namespace for the prefixes while parsing? ...

Querying a database using Cocoa.

Hello everybody. Before I start a disclaimer, I should add a little disclaimer, that I am relatively new to Cocoa development and C in general. However I do have a copy of 'Cocoa Programming for Mac OS X 3rd edition' by Aaron Hillegass, which I am working through and using as a base, if anybody has a copy I am using the 'AmaZone' exam...

How to change background color of view that appears when edit button is pressed in the more section of a UITabBarController?

Hi How to change background color of view that appears when edit button is pressed in the more section of a UITabBarController? Thanks ...

Adding two NSDate

Hi guys, I've got two NSDate, date and time. I'd like to add them in such a manner that I get the date from date and time from time. Any suggestions on how I do this? Cheers Nik ...

Changing pointer of self

I have an object that I alloc/init like normal just to get a instance. Later in my application I want to load state from disk for that object. I figure I could unarchive my class (which conforms to NSCoding) and just swap where my instance points to. To this end I use this code... NSString* pathForDataFile = [self pathForDataFile]; if([...

How to develop an app for Mac OS X that keeps reading everything the user types in?

Hello, everybody. I'm here to ask if any of you know how to develop an app for Mac OS X that keeps reading everything the user types in. An example of app that implements this behavior is Text Expander. Text Expander reads everything the user types in, searching for abbreviations previously added on it. When one of this abbreviations i...

Core Data: trying to find minimum date for an attribute in an entity

I'm trying to find the oldest date in a particular attribute in Core Data. I've found an example in the Core Data Programming Guide that purports to do exactly that, but keep getting an unrecognized selected error when I run it. My code (with only minimal changes from the Apple Example): NSFetchRequest *request = [[NSFetchRequest allo...

An NSButton with two combined images (Cocoa OSX)

I want to make a type of popupbutton sort of like the action button on OSX. I need to make the button have two images makeup the representation of the button (the icon for the button and the downward facing disclosure triangle next to it). I was thinking maybe I could add the second image as a subview of the button but it seems that th...

Adding Help to a Cocoa App

I want to add a simple one-page HTML page help to my Cocoa app. Can you tell me how to do it? I assume I just have to throw in one lousy .html (and maybe one .css?) file somewhere into my Cocoa project in Xcode? ...

NSColor, 10.6 and Gamma 2.2

With Snow Leopard the default gamma changed from 1.8 to 2.2. I happen to be working on a few Mac apps that use a very dark custom colour scheme provided by Cocoa. On 10.5 it looks fine but on 10.6 with the new gamma it's much darker and really hard on the eyes. The colour scheme is defined using numerous [NSColor colorWithCalibratedRe...

Cocoa Question: How do I get a string representation of a SEL?

Is it possible, given a SEL to generate a string representation of the method it refers to? For context: I have an object instance initialized thusly: -(id) initWithTarget:(id)object action: (SEL)action; Within the instance I would like to echo the string name of the method referred to by SEL. How do I do that? ...

How does Apple update the Airport menu while it is open? (How to change NSMenu when it is already open)

I've got a statusbar item that pops open an NSMenu, and I have a delegate set and it's hooked up correctly (-(void)menuNeedsUpdate:(NSMenu *)menu works fine). That said, that method is setup to be called before the menu is displayed, I need to listen for that and trigger an asynchronous request, later updating the menu while it is open, ...

Reading a .doc (MSWord) file in ObjectiveC ?

Hi All, Is it possible to read a .doc (MSWord) file in ObjC ? Or Is there any other way to read the word file ? Thanks ...

Cocoa Bindings and Application Preferences - Crash

Using the document provided by Apple to create an application preferences window that doesn't require any extra code, I seem to have triggered a crash that cannot be traced by me. While the stuff from Apple is older, I believe I have the settings pretty much the same as shown here: When I run my application (Hcode) and go to the pref...

How can I expose an Objective-C function to JavaScript using WebKit on Mac OS X?

I understand to do this on the iPhone you need to trap link requests (as per my other iPhone question UIWebView Expose JavaScript) and you can easily do the reverse and access JavaScript from Obj-C code. However, I would like to have JavaScript be able to call some Objective-C functions that would somehow be registered with WebKit. I a...