NSButton Setting Textcolor

Although the title color for UIButton is set in one simple method, this task is quite a bit more complex in NSButton. Here are links to the methods and the constant you'll need:

- (void)setAttributedTitle:(NSAttributedString *)aString

- (id)initWithString:(NSString *)aString attributes:(NSDictionary *)attributes

NSForegroundColorAttributeName

Let me know if you need help writing the code after looking over the above, ok?

Here's the code to set the button title color in a controller class which connects to the button with an IBOutlet:

 NSColor *color = [NSColor greenColor];
 NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
 [style setAlignment:NSCenterTextAlignment];
 NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
 color, NSForegroundColorAttributeName, style, NSParagraphStyleAttributeName, nil];
 NSAttributedString *attrString = [[NSAttributedString alloc]
 initWithString:@"Title" attributes:attrsDictionary];
 [self.button setAttributedTitle:attrString];
 [style release];
 [attrString release]; 

I'm assuming you want the title text to be centered, so this attribute is also set above, since the attributed string will otherwise default to left justified.

The task of parameterizing a block of code to make a reusable method (or function) is a basic programming topic, not something you'll learn by searching the web for sample code. I would recommend getting a good book on the fundamentals of programming and then a book on Obj-C programming in particular.

Here's how the code I posted for you above is changed to a method along with some sample code to call the method:

- (void)setButtonTitleFor:(NSButton*)button toString:(NSString*)title withColor:(NSColor*)color {
 NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
 [style setAlignment:NSCenterTextAlignment];
 NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
 color, NSForegroundColorAttributeName, style, NSParagraphStyleAttributeName, nil];
 NSAttributedString *attrString = [[NSAttributedString alloc]
 initWithString:title attributes:attrsDictionary];
 [button setAttributedTitle:attrString];
 [style release];
 [attrString release]; 
}
-(IBAction)clickOnMe:(id)sender {
 NSArray *colorArray = [[NSArray alloc] initWithObjects:
 [NSColor blackColor],
 [NSColor redColor],
 [NSColor greenColor],
 [NSColor blueColor],
 nil];
 NSColor *color = [colorArray objectAtIndex:random()%4];
 [self setButtonTitleFor:sender toString:@"Click On Me" withColor:color];
 [colorArray release];
}