用 NSTableView 覆盖 NSWindowController 中的 keyDown | 响应空格键

Question

So I have a NSTableView inside NSWindowController . When I press spacebar it goes through NSResponder and stops on NSWindow which calls performClick: on the NSTableView ( NSControl ) All other key events are handled in NSWindowController . How do I catch a spacebar event?

//NSWindowController
- (void)keyDown:(NSEvent *)event
{
    if ([[event charactersIgnoringModifiers] isEqual:@" "]) {
        [self togglePreviewPanel:self];
    } else {
        [super keyDown:event];
    }
}

Answer 1

Try with this


 - (void)keyDown:(NSEvent *)event
    {
        if ([event KeyCode]==48) {
            [self togglePreviewPanel:self];
        } else {
            [super keyDown:event];
        }
    }

//If KeyDown event doesn't work try with 'keyUp' event.