如何将重点放在从NIB加载的NSWindow？ [英] How to give focus to NSWindow loaded from NIB?

问题描述

我使用 NSWindowController 从NIB加载窗口。但是，当我调用 showWindow：时，窗口在视觉上最顶端，但焦点仍然在它的位置（而不是移动到新窗口）。

在创建新窗口之前（通过cmd + n），第一个窗口（使用键盘焦点）稍微移动很容易看到这种情况。这是结果：



底部的焦点窗口是原窗口。顶部的未聚焦窗口是新创建的窗口。

这是相关代码：

AppDelegate.h ：

   - （IBAction）newDocument： 
  

AppDelegate.m：

   - （IBAction）newDocument：（id）sender {
 [[[FooController alloc] init] showWindow：self]; 
} 
  - （void）applicationDidFinishLaunching：（NSNotification *）aNotification {
 [self newDocument：self]; 
} 
  

FooController.h：

  @interface FooController：NSWindowController {} 
 @end 
  

$ b b

FooController.m：

   - （id）init {
 self = [super initWithWindowNibName：@ FooWindow]; 
 return self; 
} 
  

FooWindow.xib：

新创建的Window xib

MainMenu.xib：

默认的MainMenu.xib，其窗口已删除。

在控制器的 windowDidLoad 方法的窗口中调用 makeKeyAndOrderFront：窗口。将FooWindow.xib的文件所有者设置为 FooController 也没有帮助。

什么是正确的方式要加载并显示来自NIB的窗口，以便它能接收键盘焦点？

编辑：看起来像 NSWindowController 的窗口方法返回 nil ，这解释了为什么调用< $ c> window 不做任何事情。但为什么 nil ？

解决方案

xib文件的所有者必须设置为控制器，并且（这是我不知道的部分）你必须连接控制器的 window 插入窗口本身。

完成后，它只是工作。不需要 makeKeyWindow ， makeMainWindow 或 makeKeyAndOrderFront： p>

I'm using NSWindowController to load a window from a NIB. However, when I call showWindow:, the window is visually topmost, but the focus remains where it was (instead of moving it to the new window).

It's easy to see this happening when the first window (with keyboard focus) is moved slightly, before creating the new window (via cmd+n). This is the result:

The bottom, focused window is the original window. The unfocused window on top is the newly created window.

This is the relevant code:

AppDelegate.h:

- (IBAction)newDocument:(id) sender;

AppDelegate.m:

- (IBAction)newDocument:(id) sender {
    [[[FooController alloc] init] showWindow:self];
}
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
    [self newDocument:self];
}

FooController.h:

@interface FooController : NSWindowController { }
@end

FooController.m:

- (id)init {
    self = [super initWithWindowNibName:@"FooWindow"];
    return self;
}

FooWindow.xib:
A freshly created Window xib, without modifications.

MainMenu.xib:
The default MainMenu.xib, with its window deleted.

Calling makeKeyAndOrderFront: on the window in the controller's windowDidLoad method does not appear to focus the new window. Setting the File's owner of FooWindow.xib to FooController also did not appear to help.

What is the correct way to load and show a window from a NIB so that it does receive keyboard focus?

Edit: It looks like NSWindowController's window method returns nil, which explains why calling methods on window doesn't do anything. But why is it nil?

解决方案

Okay, I found the cause of this problem.

The xib's File's owner must be set to the controller, and (this is the part I didn't know about) you have to connect the controller's window outlet to the window itself.

Having done that, it just works. No makeKeyWindow, makeMainWindow or makeKeyAndOrderFront: needed.

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