Le 29/10/2017 à 11:30, David Chisnall a écrit :
On 27 Oct 2017, at 20:34, Bertrand Gmail <[email protected]> wrote:
Le 27/10/2017 à 20:36, Josh Freeman a écrit :
I think you meant to use 'string', not '[NSString string]' - the latter returns
an empty string.
stringSize=[[NSString string] sizeWithAttributes:attributes];
->
stringSize=[string sizeWithAttributes:attributes];
I introduced [NSString string] because of this warning at compile time :
GSPanel.m:75:23: warning: 'NSMutableAttributedString' may not respond to
'sizeWithAttributes:'
stringSize=[string sizeWithAttributes:attributes];
And the executable doesn't work.
But now you are asking what the length of an empty string is, when a set of
attributes are applied. You want to be asking what the length of @“GNUstep”
is. You do not need to construct an NSAttributedString to call a method on
NSString.
Thanks for your answer. So I can't just use a method of NSString on an
NSattributedString.
I just wanted to put a centered label as a subview of a window (a simple
UI element indeed), using a boldSystemFont attribute. So I needed to
calculate the size of the attributed string. And I don't need line wrapping.
Josh's "[string size]" advice seems to be the way to go.
Moreover, I could put "string.size" instead of "[string size]". But I
wonder if it ist an Objc-2 feature and if it will compile with gcc and
it's libobjc.
I use somewhere else in my code :
"screenFrame = [[NSScreen mainScreen] frame];
screenSize = screenFrame.size;"
Is it also Objc-2 only ?
I ask because I wanted to be Objc-1 only and I tried "[screenFrame
size]" instead but it doesn't work : I've got this message from the
compiler :
"error: bad receiver type 'NSRect' (aka 'struct _NSRect')
screenSize = [screenFrame size];"
That's not a big deal because I already I had another more complicated
code for this borrowed from the internet. It's my will to understand
what's going wrong there.
Cheers,
Bertrand
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