objective-c - 当我按 Enter 键时，我的 NSTextField 会突出显示文本。？我只想 "enter"在字段中放置一个 "NewLine"字符，以便我可以继续输入

Question

我只想“输入”在字段中放置一个“换行”字符，以便我可以继续输入。谢谢

- (void)someAction:(id)sender
{
    NSString *s = [tf1 stringValue];
    [tf1 setStringValue:[NSString stringWithFormat:@"%@%@",s, @"\nEnter\n" ]];
}

- (void)myRun:(NSButton*)btn
{
    NSString *s = [tf1 stringValue];
    [tf1 setStringValue:[NSString stringWithFormat:@"%@%@",s, @"hello\nthere" ]];
}


- (void)windowControllerDidLoadNib:(NSWindowController *)aController
{
    [super windowControllerDidLoadNib:aController];
    // Add any code here that needs to be executed once the windowController has loaded the document's window.

    //[aController.window setFrame:CGRectMake(10,10,1000,600) display:TRUE];
    [aController.window setFrame:NSMakeRect(10,10,1000,600) display:TRUE];
    [aController.window setBackgroundColor:[NSColor grayColor]];



    //NSButton *b1 = [[NSButton alloc] initWithFrame:CGRectMake(10, 530, 100, 30)];
    NSButton *b1 = [[NSButton alloc] initWithFrame:NSMakeRect(10, 530, 100, 30)];
    [b1 setTitle:@"Run"];
    [b1 setAction:@selector(myRun:)];
    [aController.window.contentView addSubview:b1];

    tf1 = [[NSTextField alloc] initWithFrame:NSMakeRect(10, 10, 600, 500)];
    [aController.window.contentView addSubview:tf1];
    [tf1 setTarget:self];
    [tf1 setAction:@selector(someAction:)];

}

Answer 1

Technical Q&A QA1454: How to make NSTextField accept tab, return and enter keys