Cocoa：如何设置窗口标题？

Question

I have a Cocoa application with a secondary window created using a subclass of NSWindowController. I wish to set the window title. The documented method call is setTitle:. I have called this from within the window controller as follows:

- (void)windowDidLoad
{
    // set window title
    [[self window] setTitle:@"test string"]; 
}

This does not affect the title of the window though.

Any suggestions please?

Answer 1

You can connect Your window with IBOutlet and then change Your code:

[[self window] setTitle:@"test string"];

To this:

[yourWindow setTitle:@"test string"];

Full code for example:

.h

IBOutlet NSWindow *yourWindow; //Don't forget to connect window to this

.m

-(void)awakeFromNib {
    [yourWindow setTitle:@"test string"];
}

---

And of course You can change title not programatically:

Title can be changed in Attributes inspector :

Answer 2

NSWindowController 类参考表明要自定义标题，您应该覆盖windowTitleForDocumentDisplayName:方法。

Answer 3

I just use

self.window?.title = "Some String"

where I create the window.

Answer 4

In Swift this is can be done with: someOutlet.title = "New Title"

Here is an example that lives in your window controller class:

@IBOutlet weak var contentOutlet: NSWindow!

override func windowDidLoad() {
    super.windowDidLoad()

    contentOutlet.title = "New Title"
}

Again, remember to connect the outlet to the window, or just drag an outlet from the window to your window controller class.

Answer 5

I had the same issue with a non-document based app using the latest Xcode when binding the title to a selected objects filename. Whenever there is no selection the title shows up as "Untitled" - which makes no senses in the application.

So I created two properties in the NSWindowController - one gets bound to the selected object's filename and the other gets bound to the Window title.

In the didSet{} method of the property bound to the selected object I check for nil value and set the title property to the application name. If it's not nil then I set the property to the selected objects filename.

class WindowController: NSWindowController {

    /// Bind this to the controllers selected objects filename property
        @objc dynamic var filename: String? {
            didSet {
                if let name = filename {
                    title = name
                } else {
                    title = "IAM2 - no selection"
                }
            }
            
        }
        /// Bind this to the windows title
        @objc dynamic var title: String = "IAM2"


     override func windowDidLoad() {
    super.windowDidLoad()
    
    
    
    self.bind(NSBindingName(rawValue: "filename"),
              to: self.controller,
              withKeyPath: "selectedObject.filename",
              options: nil)
    
    self.window?.bind(NSBindingName(rawValue: "title"),
              to: self,
              withKeyPath: "title",
              options: nil)
    
    self.window?.bind(NSBindingName(rawValue: "subtitle"),
              to: controller,
              withKeyPath: "rootPath",
              options: nil)
    
}

}