blocks|key|4305434|text|关闭小部件并不是关闭窗口的唯一方法。有一个公共API来获取小部件，所以你不需要浏览框架视图的子视图，但无论如何这都是错误的路径。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4305435|正确的方法是使一个对象成为窗口的代理，并在那里执行interfere+with+the+window's+closure。理想情况下，您应该在创建窗口和排序窗口之间设置窗口的委托。|offset|length|4305436|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.apple.com/library/mac/documentation/Cocoa/Reference/NSWindowDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intfm/NSWindowDelegate/windowShouldClose%253a^0|0|P|Z|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

The close widget isn't the only way to close the window. There's a public API to obtain the widget, so you don't need to go rifling through the frame view's subviews, but that's the wrong path anyway.

The right way is to make an object to be the window's delegate, and <a href="http://developer.apple.com/library/mac/documentation/Cocoa/Reference/NSWindowDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intfm/NSWindowDelegate/windowShouldClose%3a" rel="nofollow">interfere with the window's closure</a> there. Ideally, you should set the window's delegate in between creating the window and ordering it in.

blocks|key|4305479|text|我现在走另一条路线。这在一定程度上与Chrome有关，但也可以很容易地在其他地方采用。我想捕捉几个动作，以便尽可能早地关闭窗口，以避免任何其他导致窗口处于奇怪状态的清理。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4305480|def+check_close_callback(obj):
++++#+check+...
++++return+True+#+or:
++++return+False

import+objc
BrowserWindowController+=+objc.lookUpClass("BrowserWindowController")

#+copied+from+objc.signature+to+avoid+warning
def+my_signature(signature,+**kw):
++++from+objc._objc+import+selector
++++kw['signature']+=+signature
++++def+makeSignature(func):
++++++++return+selector(func,+**kw)
++++return+makeSignature

windowWillCloseSig+=+"c12@0:4@8"+#+BrowserWindowController.windowWillClose_.signature
commandDispatchSig+=+"v12@0:4@8"
class+BrowserWindowController(objc.Category(BrowserWindowController)):
++++@my_signature(windowWillCloseSig)
++++def+myWindowShouldClose_(self,+sender):
++++++++print+"myWindowShouldClose",+self,+sender
++++++++if+not+check_close_callback(self):+return+objc.NO
++++++++return+self.myWindowShouldClose_(sender)+#+this+is+no+recursion+when+we+exchanged+the+methods

++++@my_signature(commandDispatchSig)
++++def+myCommandDispatch_(self,+cmd):
++++++++try:+print+"myCommandDispatch_",+self,+cmd
++++++++except:+pass+#+like+<type+'exceptions.UnicodeEncodeError'>:+'ascii'+codec+can't+encode+character+u'\u2026'+in+position+37:+ordinal+not+in+range(128)
++++++++if+cmd.tag()+==+34015:+#+IDC_CLOSE_TAB
++++++++++++if+not+check_close_callback(self):+return+++++++++++
++++++++self.myCommandDispatch_(cmd)

from+ctypes+import+*
capi+=+pythonapi

#+id+objc_getClass(const+char+*name)
capi.objc_getClass.restype+=+c_void_p
capi.objc_getClass.argtypes+=+[c_char_p]

#+SEL+sel_registerName(const+char+*str)
capi.sel_registerName.restype+=+c_void_p
capi.sel_registerName.argtypes+=+[c_char_p]

def+capi_get_selector(name):
++++return+c_void_p(capi.sel_registerName(name))

#+Method+class_getInstanceMethod(Class+aClass,+SEL+aSelector)
#+Will+also+search+superclass+for+implementations.
capi.class_getInstanceMethod.restype+=+c_void_p
capi.class_getInstanceMethod.argtypes+=+[c_void_p,+c_void_p]

#+void+method_exchangeImplementations(Method+m1,+Method+m2)
capi.method_exchangeImplementations.restype+=+None
capi.method_exchangeImplementations.argtypes+=+[c_void_p,+c_void_p]

def+method_exchange(className,+origSelName,+newSelName):
++++clazz+=+capi.objc_getClass(className)
++++origMethod+=+capi.class_getInstanceMethod(clazz,+capi_get_selector(origSelName))
++++newMethod+=+capi.class_getInstanceMethod(clazz,+capi_get_selector(newSelName))
++++capi.method_exchangeImplementations(origMethod,+newMethod)

def+hook_into_windowShouldClose():
++++method_exchange("BrowserWindowController",+"windowShouldClose:",+"myWindowShouldClose:")

def+hook_into_commandDispatch():
++++method_exchange("BrowserWindowController",+"commandDispatch:",+"myCommandDispatch:")|code-block|syntax|javascript|4305481|这段代码来自here和here。|offset|length|4305482|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/albertz/ChromeWebApps|1|https://github.com/albertz/chromehacking^0|0|0|6|4|0|B|4|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@$I|X|J|Y|1|Z]|$I|10|J|11|1|12]]|A|$]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]|S|$5|N|O|P|A|$Q|T]]]]

I am going another route now. This is partly Chrome related but it can easily be adopted elsewhere. I wanted to catch several actions for closing the window as early as possible to avoid any other cleanups or so which resulted in the window being in a strange state.

<pre><code>def check_close_callback(obj):
 # check ...
 return True # or:
 return False

import objc
BrowserWindowController = objc.lookUpClass("BrowserWindowController")

# copied from objc.signature to avoid warning
def my_signature(signature, **kw):
 from objc._objc import selector
 kw['signature'] = signature
 def makeSignature(func):
 return selector(func, **kw)
 return makeSignature

windowWillCloseSig = "c12@0:4@8" # BrowserWindowController.windowWillClose_.signature
commandDispatchSig = "v12@0:4@8"
class BrowserWindowController(objc.Category(BrowserWindowController)):
 @my_signature(windowWillCloseSig)
 def myWindowShouldClose_(self, sender):
 print "myWindowShouldClose", self, sender
 if not check_close_callback(self): return objc.NO
 return self.myWindowShouldClose_(sender) # this is no recursion when we exchanged the methods

 @my_signature(commandDispatchSig)
 def myCommandDispatch_(self, cmd):
 try: print "myCommandDispatch_", self, cmd
 except: pass # like &lt;type 'exceptions.UnicodeEncodeError'&gt;: 'ascii' codec can't encode character u'\u2026' in position 37: ordinal not in range(128)
 if cmd.tag() == 34015: # IDC_CLOSE_TAB
 if not check_close_callback(self): return 
 self.myCommandDispatch_(cmd)

from ctypes import *
capi = pythonapi

# id objc_getClass(const char *name)
capi.objc_getClass.restype = c_void_p
capi.objc_getClass.argtypes = [c_char_p]

# SEL sel_registerName(const char *str)
capi.sel_registerName.restype = c_void_p
capi.sel_registerName.argtypes = [c_char_p]

def capi_get_selector(name):
 return c_void_p(capi.sel_registerName(name))

# Method class_getInstanceMethod(Class aClass, SEL aSelector)
# Will also search superclass for implementations.
capi.class_getInstanceMethod.restype = c_void_p
capi.class_getInstanceMethod.argtypes = [c_void_p, c_void_p]

# void method_exchangeImplementations(Method m1, Method m2)
capi.method_exchangeImplementations.restype = None
capi.method_exchangeImplementations.argtypes = [c_void_p, c_void_p]

def method_exchange(className, origSelName, newSelName):
 clazz = capi.objc_getClass(className)
 origMethod = capi.class_getInstanceMethod(clazz, capi_get_selector(origSelName))
 newMethod = capi.class_getInstanceMethod(clazz, capi_get_selector(newSelName))
 capi.method_exchangeImplementations(origMethod, newMethod)

def hook_into_windowShouldClose():
 method_exchange("BrowserWindowController", "windowShouldClose:", "myWindowShouldClose:")

def hook_into_commandDispatch():
 method_exchange("BrowserWindowController", "commandDispatch:", "myCommandDispatch:")
</code></pre>

This code is from <a href="https://github.com/albertz/ChromeWebApps" rel="nofollow">here</a> and <a href="https://github.com/albertz/chromehacking" rel="nofollow">here</a>.

I want to catch all tries to close some specific existing Cocoa window and add some own handler (which might indeed really close it or do something different).

I had different solutions in mind to do this. One was:

I want to replace the window close button of an existing Cocoa window at runtime with an own close widget where I can add some own code.

Right now, I have this code:

<pre><code>import objc
_NSThemeCloseWidget = objc.lookUpClass("_NSThemeCloseWidget")

def find_close_widget(window):
 contentView = window.contentView()
 grayFrame = contentView.superview()
 for i in range(len(grayFrame.subviews())):
 v = grayFrame.subviews()[i]
 if isinstance(v, _NSThemeCloseWidget):
 return v, i, grayFrame

class CustomCloseWidget(_NSThemeCloseWidget):
 pass

def replace_close_widget(window, clazz=CustomCloseWidget):
 v, i, grayFrame = find_close_widget(window)
 newv = clazz.alloc().init()
 grayFrame.subviews()[i] = newv
</code></pre>

However, this doesn't seem quite right. (It crashes.)

Override window close behavior

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我想要捕获关闭某些特定的现有Cocoa窗口的所有尝试，并添加一些自己的处理程序(这可能真的会关闭它或做一些不同的事情)。我有不同的解决方案来做这件事。一个是：我想在运行时用自己的close小部件替换现有Cocoa窗口的窗口关闭按钮，我可以在其中添加一些自己的代码。现在，我有这样的代码：import objc_NSThe...

问覆盖窗口关闭行为
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问覆盖窗口关闭行为EN