Execute an Action when the Enter-Key is pressed in a NSTextField?

Question

I have a small problem right now. I want to execute a method when the Enter key is pressed in a NSTextField. The user should be able to enter his data and a calculation meth

Answer 1

You have to do only this

For some keys (Enter, Delete, Backspace, etc)

self.textfield.delegate = self;

and then implement this method

- (BOOL)control:(NSControl *)control textView:(NSTextView *)fieldEditor doCommandBySelector:(SEL)commandSelector
{
    NSLog(@"Selector method is (%@)", NSStringFromSelector( commandSelector ) );
    if (commandSelector == @selector(insertNewline:)) {
        //Do something against ENTER key

    } else if (commandSelector == @selector(deleteForward:)) {
        //Do something against DELETE key

    } else if (commandSelector == @selector(deleteBackward:)) {
        //Do something against BACKSPACE key

    } else if (commandSelector == @selector(insertTab:)) {
        //Do something against TAB key

    } else if (commandSelector == @selector(cancelOperation:)) {
        //Do something against Escape key
    }
    // return YES if the action was handled; otherwise NO
} 

Answer 2

NSTextFieldDelegate's – control:textView:doCommandBySelector: is your friend.

Look for the insertNewline: command.