CODEWITHSUNDEEP
objective-ccocoa
beipawel
beipawel

Reputation: 433

Property 'frame' cannot be found in forward class

First: I'm very new to cocoa development. I guess my problem is something very obvious.

I need to know the size of my WebView after loading. For that I've found the answer already, but I have a Problem. Here's the relevant piece of my code.

The App delegate:

    @implementation MDAppDelegate

    - (void)applicationDidFinishLaunching:(NSNotification *)aNotification {

      //set ourselves as the frame load delegate so we know when the window loads
      [self.webView setFrameLoadDelegate:self];

      // set the request variable, which works and then load the content into the webView
      [self.webView.mainFrame loadRequest:request];

    }

    - (void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)webFrame
    {
      NSLog(@"webView:didFinishLoadForFrame");
      if([webFrame isEqual:[self.webView mainFrame]]) {
        // some code ...
        // and at some point I want to get the frame property of self.window
        NSRect windowFrame = self.window.frame;
      }
    }

The window property is defined in the header file of the app delegate:

    @interface MDAppDelegate : NSObject <NSApplicationDelegate>
      @property (weak) IBOutlet MDTransparentWindow *window;
      @property (weak) IBOutlet WebView *webView;
    @end

I found the answer to (so it would seem) a very similar problem. The solution there is to #import <QuartzCore/QuartzCore.h>and also link the framework in the Build Phases tab. I did this, but the problem remains. I also cleaned my project (as of now I still don't really know what cleaning does, but sometimes it helps) with no result.

The window is an instance of my own class TransparentWindow which is subclassing NSWindow. When I start writing self.f in the subclass implementation file xcode automatically suggests frame. But this is not happening when I write self.window.f in the webView:didFinishLoadForFrame method.

As I said, I'm new to cocoa development. Any hints, what I might have missed?

Upvotes: 0

Views: 483

Answers (1)

gnasher729
gnasher729

Reputation: 52538

You usually get this message if you only did a forward declaration of a class, like

@class MyPhantasticClass;

The compiler knows that it is a class, but doesn't know any of it's methods. You need to include the right header file.

Upvotes: 2

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