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Re: object reference in a structure [message #12890 is a reply to message #12857]

Tue, 15 September 1998 00:00

Phillip & Suzanne
Messages: 31
Registered: June 1998

Member

Charlie Solomon wrote:

;> Hi everyone...is it possible to put an object reference in a structure
;> variable? For example, I create a new object, then create a pointer to an
;> info structure for my widget and try to include the object reference in the
;> structure:

;> junk = 'charlie was here'
;> ptr_new, info( { junk:junk, oWindow:0 } )

Try this:

junk='charlie was here'
ptr_new, info({junk:junk, oWindow:Obj_New()} )

;> But when I try to access it bad things happen (I can get the actual error
;> message if needed). Here's how I try to access it:

;> (*info).oWindow = obj_new('IDLgrWindow') ;no worky
;> (*info).oWindow -> method, keywords ;no worky

;> Should I even be trying this? I want to be able to store the object
;> reference in info after it is created in another procedure and passed back
;> so that my widget program can modify properties and destroy it based on
;> xmanager events. Thanks!

The problem really turns out to be one of data types. An IDL object reference
is not a short integer. I believe it is a long integer, but Obj_New() returns
a null object reference that is definitely the correct type. Once this is set
up, I believe you'll be in great shape.

Phillip

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[Message index]

		Re: object reference in a structure By: Charlie Solomon on Fri, 18 September 1998 00:00
		Re: object reference in a structure By: Vap User on Thu, 17 September 1998 00:00
		Re: object reference in a structure By: Phillip & Suzanne on Tue, 15 September 1998 00:00

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