my apologies, i thought that i'd simplify the problem, because the
application is far too large to post to the forum
so i'll expand a little bit and show some code.
the controller class (GUIController) communicates between the GUI
and an instance of the ImageMaker class, which generates images
algorithmically.
the GUI has a NSImageView that displays NSImages. ImageMaker tells
GUIController to display the images in the GUI whenever the
composition process is complete using a method called displayPainting.
i recently added a button to the GUI (and another IBOutlet -
ImageMaker *mainApplication) to communicate to the ImageMaker class
(see the savePainting methods in both classes), prompting the
ImageMaker class to save the current image to disk.
when i tried importing ImageMaker.h into ImageController, i
received an error saying ".../GUIController.h:15: error: parse
error before 'ImageMaker'.
hopefully the code below will help to clarify the problems that i'm
running into.
jeremy
------------------- ImageMaker.h --------------------------------
#import "GUIController .h"
@interface GUIController : NSObject {
NSImage *currentImage;
IBOutlet GUIController *myGUIController;
}
- (void) generatePainting;
- (void) savePainting;
- (void) displayPainting;
@end
------------------- ImageMaker.m --------------------------------
#import "ImageMaker.h"
@implementation ImageMaker
- (void) generatePainting {
myNSImage = [[ NSImage alloc ] initWithSize:NSMakeSize(320, 240) ];
}
- (void) displayPainting {
[ myGUIController displayPainting:myNSImage ];
}
- (void) savePainting {
NSData *TIFFData = [ myNSImage TIFFRepresentation ];
[TIFFData writeToFile:@"Users/Jeremy/Desktop" atomically:YES];
}
@end
------------------- GUIController.h --------------------------------
#import "ImageMaker.h" <-- throws an error
@interface GUIController : NSWindowController {
IBOutlet ImageMaker *mainApplication;
IBOutlet NSImageView * sourceImage;
}
- (IBAction) savePainting;
- (void) displayPainting;
@end
------------------- GUIController.m --------------------------------
#import "GUIController .h"
@implementation GUIController
- (IBAction) savePainting: (id)sender {
[ mainApplication savePainting ];
}
- (void) displayPainting:(NSImage *) theImage {
[ sourceImage setImage:theImage ];
}
@end
On Jul 17, 2007, at 7:08 PM, I. Savant wrote:
On Jul 17, 2007, at 6:16 PM, Jeremy Rotsztain wrote:
i've got a controller class, MyController, that is used by the
main class (ImageMaker, an image generating class) to display
images in the main application window.
MyController is setup as an IBOutlet for that main class.
i wanted to create a button on the gui that communicates through
MyController to ImageMaker, but when i place #import
"ImageMaker.h" in MyController.h, XCode throws an error.
Is it not possible to set up two way-communication between a
controller and another class?
Please give this document a read:
http://www.catb.org/~esr/faqs/smart-questions.html
Once you've done this, please provide the details you've left
out. Namely, what is your overall goal, and what "error" XCode is
giving you. Anything less requires a lot of patience and a crystal
ball ... neither of which you're likely to find on a technical
mailing list. ;-)
--
I.S.
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