Mac Forum / Programming / Mac Programming / February 2006

Where can one find information on bindings in Xcode's documentation?
By bindings I mean  the key-value binding capability that was added to
Mac OS X 10.3  to bind a value in one object to a property in another
object.  The object of theses bindings is  to reduce the amount of code

I am struggling with my installation routine while trying to put my
application + shared lib tree
to any place the user wishes. It should be easily tried out and
similary easy removable, but I

Unfortunately Waste text control not suport Universal Binary up to
now, So I must try to look for a right control that can suport URL
links, but failed.
Apple have a MLTE control in PowerPlantX or PowerPlant, but It not

In Intertface Buider the outline view displays the nested hierarchy of
all of the objects in the nib and the data paths for messages and
bindings.  Most of the data paths are labelled and show either a symbol
that looks like an electricians symbol for a wall socket or a circle

Xcode 2.2 will not open files that are not part of a project. Is this
normal?
If a project is open and I select File -> Open... and choose a file
that is not part of the project (but is s source file such as .h file)

I've learned a lot about Cocoa in the past month (thank you Michael Ash
and Uli Kusterer), but now I'm stuck again, on this issue:
I want to use NSString's drawAtPoint:withAttributes method to draw some
text in a view.  This is intentional -- I'm constructing a graphic

I'm using NSURLHandle to DL text from web pages...
MyClient *myClient = [[MyClient alloc] init];
NSURL *url=[NSURL URLWithString:wikiStr];
NSURLHandle *urlHandle=[url URLHandleUsingCache:NO];

I'm trying to convert a CFStringRef to C string using
CFStringGetCString & CFStringGetCStringPtr API. But whenever the
CFStringRef contains non-enlish characters (Eg. French, Japanese ), the
API returns null.

How can I load an image resource with an alpha? I've been looking at
CGImageCreateWithPNGDataProvider and CGImageCreateWithJPEGDataProvider,
however neither appear to support alpha channels. I tried saving PNG
with transparency from Photoshop, but it crashed my app upon trying to

Hi,
I'm getting the following error:
malloc: *** error for object 0x162c3800: incorrect checksum for freed
object - object was probably modified after being freed,

I am trying to implement a panel and have an "AppController" and a
"PanelController". So that I can pass a value from the PanelController
to the AppController I've made the AppController and outlet of the
panelController. (It's probably not the way to do it but I can't think

I'm totally new to XCode and I can't for the life of me figure out how
to get my binary to link against a dynamlic library. I have a very
simple ncurses program:
#include <ncurses.h>

I am having problems with malloc on OS X 10.3, compiling with gcc 3.3.
My app (written in c++ and runing without problems on Linux) gives me
malloc failures on start-up. Now I found that this has been a issue
with almost any project ported from Linux to OS X. Still, while I found

I'm working on a Obj-C++ project, (using .mm classes for control&view,
and .cpp classes for the logic).
All's been well up until now with a mix of both object types, but now I
have a c++ class which will only tolerate any constructors being

To change the window background I use this code:
  [my_window setBackgroundColor:new_window_color];
  [my_window display];
If the background is set inside awakeFromNib the window appear correctly.