Re: How to avoid warning with objc_msgSend
Re: How to avoid warning with objc_msgSend
- Subject: Re: How to avoid warning with objc_msgSend
- From: "John C. Randolph" <email@hidden>
- Date: Mon, 4 Oct 2004 21:32:00 -0700
On Oct 4, 2004, at 5:11 PM, Ryan Norton wrote:
Hi,
When I use objc_msgSend with something that doesn't exist on 10.2 but
exists on 10.3 on a 10.2 system, I get a "selector not recognized"
warning in the console every time I call it -
objc_msgSend(GetNSView(),@selector
(getRectsBeingDrawn:count:),&rects,&countRects);
Is there something better to use in this circumstance than
objc_msgSend? Is there a way to turn off this warning? Or is an
#ifdef required in this circumstance?
It's pretty unusual to call objc_msgSend() yourself. What are you
trying to do?
Anyhow, assuming that GetNSView() is a function returning a pointer to
an NSViewInstance, why don't you just send it normally?
id aView = GetNSView();
NSRect *rects;
int rectCount;
[aView getRectsBeingDrawn:&rects count:&rectCount];
Or, if you just want to silence the warning, make sure you've imported
a header that declares -getRectsBeingDrawn:count: before you get to
that line, or just replace
@selector(getRectsBeingDrawn:count:)
with
NSSelectorFromString(@"getRectsBeingDrawn:count:")
HTH,
-jcr
On Oct 4, 2004, at 5:11 PM, Ryan Norton wrote:
Hi,
When I use objc_msgSend with something that doesn't exist on 10.2 but
exists on 10.3 on a 10.2 system, I get a "selector not recognized"
warning in the console every time I call it -
objc_msgSend(GetNSView(),@selector
(getRectsBeingDrawn:count:),&rects,&countRects);
Is there something better to use in this circumstance than
objc_msgSend? Is there a way to turn off this warning? Or is an
#ifdef required in this circumstance?
It's pretty unusual to call objc_msgSend() yourself. What are you
trying to do?
Anyhow, assuming that GetNSView() is a function returning a pointer to
an NSViewInstance, why don't you just send it normally?
id aView = GetNSView();
NSRect *rects;
int rectCount;
[aView getRectsBeingDrawn:&rects count:&rectCount];
Or, if you just want to silence the warning, make sure you've imported
a header that declares -getRectsBeingDrawn:count: before you get to
that line, or just replace
@selector(getRectsBeingDrawn:count:)
with
NSSelectorFromString(@"getRectsBeingDrawn:count:")
HTH,
-jcr
John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden