在 Cocoa Objective-C 中创建模态对话框或窗口？
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Creating a Modal Dialog or Window in Cocoa Objective-C?
提问by Pradeep Kumar
I need to create an modal dialog, which is to loaded from a nib file and should be displayed on a button click in the main window.
我需要创建一个模态对话框，它是从一个 nib 文件加载的，应该在主窗口中单击按钮时显示。
I can create a custom window in a nib file and load the custom dialog on button click, but it's not a modal dialog. I can switch back to the main window.
我可以在 nib 文件中创建自定义窗口并在单击按钮时加载自定义对话框，但它不是模式对话框。我可以切换回主窗口。
MyWindowControlleris the NSWindowControllersubclass.
I used the code below to display my window in response to the button event:
MyWindowController是NSWindowController子类。我使用下面的代码来显示我的窗口以响应按钮事件：
MyWindowController *pController = [[MyWindowController alloc]
initWithWindowNibName:@"nibfilename"];
[MyWindowController showWindow:self];
回答by Chuck
There are several ways to do this — and in fact two different kinds of modal dialog in OS X: application-modal and window-modal. Using the wrong one will annoy people. One is a sheet, which is attached to the window that it affects (save dialogs are an example of this). The other is application-modal, which blocks the whole application (open dialogs work this way, since they don't apply to any window that exists yet). Apple's sheet documentationshould help get you oriented.
有几种方法可以做到这一点——实际上 OS X 中有两种不同的模态对话框：应用程序模态和窗口模态。用错了会惹恼人。一个是工作表，它附加到它影响的窗口（保存对话框就是一个例子）。另一个是应用程序模式，它会阻止整个应用程序（打开的对话框以这种方式工作，因为它们不适用于任何尚不存在的窗口）。Apple 的工作表文档应该可以帮助您定位。
回答by Pradeep Kumar
Thank you...
谢谢...
(Example). Create a nib with name "About"
（例子）。创建一个名为“About”的笔尖
if(pAbtCtrl == nil)
pAbtCtrl = [[AboutWindowController alloc] initWithWindowNibName:@"About"];
pAbtWindow = [pAbtCtrl window];
[NSApp runModalForWindow: pAbtWindow];
[NSApp endSheet: pAbtWindow];
[pAbtWindow orderOut: self];
