[HungrySeacow]

Sorry for the thread topic, I couldn't think of anything better

I am trying to learn Cocoa and wanted to create a simple program that has a button and an NSTextField. When the button is pressed I wanted text to fill the NSTextField by scrolling into it. Anyway, here is the code from the Class I created to control the window.

- (IBAction)startid)sender
{

[NSTimer scheduledTimerWithTimeInterval:0.5
target:self
selector:@selector(changeText)
userInfo:self
repeats:YES];


}

- (void)changeText
{

NSString *textStringData = @"Scrolling Text";
NSMutableString *intermediateStringData
int stringLength = [textStringData length];
int x;
for (x = 0; x < stringLength; x++)
{
[intermediateStringData characterAtIndex:x] = [textStringData characterAtIndex:x];
[textField1 setStringValue: intermediateStringData];
}

}
@end

I get four build errors:

-Nested functions are not supported on MacOSX for the line "int stringLength = [textStringData length];

-'stringLength' undeclared for the line "for (x = 0; x < stringLength; x++)"

-'intermediateStringData' undeclared for the line "[intermediateStringData characterAtIndex:x] = [textStringData characterAtIndex:x];"


I am new, so please be gentle

[HungrySeacow]

Hrmm... I just realized that aside from the problems that I am having with the code, I am guessing that the NSTimer I have will keep resetting the "for" loop and will keep redrawing the first letter over and over. Darn

[Chuckit]

You're missing a semicolon.

As for the loop: It sounds like what you want is an instance variable that keeps track of where you are in the string between calls rather than a loop.

[HungrySeacow]

Ahh, yes semicolon was missing. I think I am going to go back to reading Cocoa Programing For OS X, by Aaron Hillegass for a while before I continue on this one.