objective-c - 我该如何修改以及修改什么类/文件才能以编程方式插入 Cocoa NSButton？

Question

如何以及修改哪些类/文件才能以编程方式插入 avCocoa NSButton？ (适用于 Mac，不适用于 iPhone)

我尝试了以下方法，但不起作用:(请求成员“查看”非结构或联合的内容。)

- (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.
    NSButton *btn = [NSButton alloc];
    [self.view addSubview:btn];
}

Answer 1

您必须将其添加到窗口的内容 View 中。

- (void)windowControllerDidLoadNib:(NSWindowController *)aController {
    [super windowControllerDidLoadNib:aController];

    // Get our content view.
    NSView *contentView = aController.window.contentView;

    // Create the rectangle in which to place the button.
    NSRect buttonFrame = NSMakeRect(0, 0, 100, 25);
    buttonFrame.origin.x = round((contentView.frame.size.width-buttonFrame.size.width)/2);
    buttonFrame.origin.y = round((contentView.frame.size.height buttonFrame.size.height)/2);

    // Create and add the button.
    NSButton *button = [[[NSButton alloc] initWithFrame:buttonFrame] autorelease];
    [button setBezelStyle:NSRoundedBezelStyle];
    [contentView addSubview:button];    
}