Пример кода для создания NSTextField “маркировка”?
IIRC, у Вас будет IrreversibleMigration при изменении типа данных в миграции.
4 ответа
A label is actually an instance of NSTextField, a subclass of NSView. So, since it is a NSView, it has to be added to another view.
Here's a working code:
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
NSTextField *textField;
textField = [[NSTextField alloc] initWithFrame:NSMakeRect(10, 10, 200, 17)];
[textField setStringValue:@"My Label"];
[textField setBezeled:NO];
[textField setDrawsBackground:NO];
[textField setEditable:NO];
[textField setSelectable:NO];
[view addSubview:textField];
}
This can be tricky to get right. I don't have the recipe for an exact replica handy, but when I've been stuck in a similar situation, here's what I do:
- Create a UI element in IB.
- Add an outlet to it from my controller class.
- Break in gdb in awakeFromNib or whatever.
- From the gdb prompt, "p *whateverOutlet" ... this will show you the C struct contents of the label NSTextField that IB set up.
By looking at all the myriad values in there, you can get a lot of guesses about what you're neglecting to set. Usually it ends up being some magic combination of bezel and border settings, that gets you where you want to be.
Specifically, you will want to setBordered:NO, and set the bezel style to whatever that bezel style is which I forgot. Also setEditable:NO, and optionally setSelectable:NO. That should suffice.
You could try using nib2objc to get all the properties that IB sets