call method doesn't do anything at all - what's happening?

Scripting Forums AppleScript Studio & Xcode
#1

Hi

I am trying to use “call method” to call the Cocoa API, but no matter what I do, it simply doesn’t do anything at all. I am using 10.3.5 and Xcode 1.5, so I would think that my environment should be up to date enough to use “call method”.

Can anybody please shed some light on this, here is my most recent test code …


on clicked theObject
	local InputString, TrimmedString, NSCharSet
	if the name of theObject is "TrimButton" then
		log "trim button clicked"
		set NSCharSet to call method "whitespaceAndNewlineCharacterSet" of class "NSCharacterSet"
		set InputString to (contents of text field "InputString" of window "Main")
		log "InputString: <" & InputString & ">"
		set TrimmedString to (call method "stringByTrimmingCharactersInSet:" of class "NSString" with parameter NSCharSet)
		log "Trimmed: <" & TrimmedString & ">"
	end if
end clicked

the output I am getting is this:

[Session started at 2004-12-12 01:11:57 +0900.]
2004-12-12 01:12:09.182 CocoaTrimStringExample[8214] “trim button clicked”
2004-12-12 01:12:09.242 CocoaTrimStringExample[8214] “InputString: < this is a test >”

and then after about a one second delay an error box pops up that says:

AppleScript Error
The variable TrimmedString is not defined. (-2753)

Strange as it may seem, this error pops up even if I define TrimmedString as a property with a given value, ie “” or “foobar”. In other words, the only effect that “call method” seems to have is to undefine variable TrimmedString. Oooooops!

I’d appreciate if somebody could give me a few hints on how to use this facility, the documentation on this is so lousy it may as well not be there at all and what’s out there on the web when googling for “call method” is not of any learning value either.

thanks
rgds
benjk

#2

Instead of:

set TrimmedString to (call method "stringByTrimmingCharactersInSet:" of class "NSString" with parameter NSCharSet)

try the following:

copy (call method "stringByTrimmingCharactersInSet:" of class "NSString" with parameter NSCharSet) to TrimmedString

I don’t know if this will work, but if it does I’ll give you my thoughts as to why.

Kevin

#3

I have a similar case here. Using copy instead of set doesn’t change the error I get.

Kevin, your thoughts would be appreciated… if you’re still on this forum or somebody else wants to help, I’d be very happy. :slight_smile:

My scenario:


	set newRect to {398.0, 336.0, 878.0, 718.0} 
	-- set newRect to make new "NSrect" call method "frame" of window "Main"
	set newMask to 0  -- as integer
	set newBuffer to 0 -- "NSBackingStoreRetained "
	set newDefer to "NO" -- as boolean
	set NSWindow to call method "alloc" of class "NSWindow"
(* here's the similar part *)
	--copy (call method "initWithContentRect:styleMask:backing:defer:" of NSWindow with parameters {newRect, newMask, newBuffer, newDefer}) to newWin
	newWin to (call method "initWithContentRect:styleMask:backing:defer:" of NSWindow with parameters {newRect, newMask, newBuffer, newDefer})
-->  Can't get window id 1. (-1728)

I have also tried this variant:


	-- set NSWindow to call method "alloc" of class "NSWindow"
	-- copy (call method "initWithContentRect:styleMask:backing:defer:" of class "NSWindow" with parameters {newRect, newMask, newBuffer, newDefer}) to newWin
	set newWin to (call method "initWithContentRect:styleMask:backing:defer:" of class "NSWindow" with parameters {newRect, newMask, newBuffer, newDefer})
-- when referencing newWin --> The variable newWin is not defined. (-2753)


Maybe this post hasn’t been solved because it’s in O5X and not ASS/XCode board.

#4

Moved to AppleScript Studio.