Hi all, I am new to Objective-C and Cocoa, but I am learning it for what I thought was a pretty small project. I need some help with the notification system and the run loop in Cocoa. The end result is supposed to be a program that constantly reads and writes data from a serial port to a local file, but baby step here. It was suggested that I use NSFileHandle class to make my program more thread safe. This is a quick test I tried to write out. I would change the data in the text file, and hopefully something will show up on the console:
PS what's a proper way to work between NSData and NSString? //CODE #import <Cocoa/Cocoa.h> #import <Foundation/NSFileHandle.h> #import <Foundation/NSString.h> #import <Foundation/NSNotificationCenter.h> #import <stdio.h> @interface test : NSObject -(void) writeDataReadInBackground:(NSNotification *)notification; -(void) testWriteData:(NSData *)data; @end int main(int argc, char *argv[]) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSData *aData = [@"Test" dataUsingEncoding: NSASCIIStringEncoding]; NSFileHandle *in = [NSFileHandle fileHandleForReadingAtPath:@"/Users/_me_/test.txt"]; if(in == nil) printf("somethig wrong\n"); test *t = [[test alloc] init]; [[NSNotificationCenter defaultCenter] addObserver: t selector:@selector(writeDataReadInBackground:) name: NSFileHandleDataAvailableNotification object: nil]; [t testWriteData: aData]; [stdIn waitForDataInBackgroundAndNotify]; while(1) sleep(5); [t release]; [pool release]; return 0; } @implementation test - (void) writeDataReadInBackground:(NSNotification *)notification { printf("Notification recieved\n"); } - (void) testWriteData:(NSData *)data { NSFileHandle *stdOut = [NSFileHandle fileHandleWithStandardOutput]; [stdOut writeData:data]; } @end //END_CODE Thanks!! <EOM> _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]