Re: Old NeXT code
Re: Old NeXT code
- Subject: Re: Old NeXT code
- From: Kenny Leung <email@hidden>
- Date: Sat, 10 Sep 2005 23:36:04 -0700
On Sep 10, 2005, at 7:08 PM, Ken Shmidheiser wrote:
I have been attempting to compile in Xcode a 1992 vintage NeXT
project found here:
typedef struct {
NXColor background;
NXColor text;
} squareColor;
NXColor was a struct, I think. NSColor is now an object. You cannot
declare an object statically, so you will have to change it to this:
typedef struct {
NSColor *background;
NSColor *text;
} squareColor;
This also complicates things a bit in terms of memory management.
Depending on how squareColor is declared, (if it's malloc'd or not)
you may or may not have had to free it.
Now, however, you have to worry about the NSColors it contains, or
risk leaking them. You need to remember to release the NSColors when
you're done with them.
Scenario 1: easier to remember
- (void)blah
{
squareColor *colors;
colors = malloc(sizeof(squareColor));
colors->background = [[NSColor redColor] retain];
colors->text = [[NSColor blackColor] retain];
... do some stuff ...
free(colors);
[colors->background release];
[colors->background release];
}
Scenario 2: easier to forget
- (void)blah
{
squareColor colors;
colors.background = [[NSColor redColor] retain];
colors.text = [[NSColor blackColor] retain];
... do some stuff...
[colors.background release];
[colors.background release];
}
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| | >Old NeXT code (From: Ken Shmidheiser <email@hidden>) |