问题描述
我将Carbon应用程式转换为Cocoa应用程式，但找不到Cocoa等效项：
I'm converting a Carbon app to a Cocoa app and I can't find the Cocoa equivalent for:
UpdateSystemActivity(UsrActivity);
任何Mac人都在指望我朝正确的方向？感谢。
Any Mac people out there care to point me in the right direction? Thanks.
UPDATE ：我正在建设64位。建立32bit工作正常，但我得到的符号未声明在此范围错误UpdateSystemActivity（和其他人）时，我建立64位。
UPDATE: I'm building 64bit. Building 32bit works fine, but I get symbol not declared in this scope errors for UpdateSystemActivity (and others) when I build for 64bit.
UPDATE2 ：我要导入以下内容：
UPDATE2: I'm importing the following:
#import <Cocoa/Cocoa.h>
#import <Carbon/Carbon.h>
#import <OpenGL/CGLMacro.h>
在构建64位时需要导入其他东西吗？
Is there some other thing I need to import when building 64bit?
UPDATE3 ：添加 #import< CoreServices / CoreServices.h> 没有帮助。我仍然得到编译器错误，告诉我UpdateSystemActivity和UsrActivity没有在这个范围内声明。
UPDATE3: Adding #import <CoreServices/CoreServices.h> did not help. I still get compiler errors telling me UpdateSystemActivity and UsrActivity was not declared in this scope.
UPDATE4 ：好的，文件在OSServices / 。H。我正在构建针对10.5 SDK，并快速搜索显示：
UPDATE4: Okay, file not found on OSServices/Power.h. I'm building against the 10.5 SDK and a quick search shows:
$ pwd
/Developer/SDKs
$ find . -name Power.h
./MacOSX10.3.9.sdk/Developer/Headers/CFMCarbon/OSServices/Power.h
./MacOSX10.3.9.sdk/Developer/Headers/CFMCarbon/Power.h
./MacOSX10.3.9.sdk/Developer/Headers/FlatCarbon/Power.h
./MacOSX10.3.9.sdk/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServices.framework/Versions/A/Headers/Power.h
./MacOSX10.4u.sdk/Developer/Headers/CFMCarbon/OSServices/Power.h
./MacOSX10.4u.sdk/Developer/Headers/CFMCarbon/Power.h
./MacOSX10.4u.sdk/Developer/Headers/FlatCarbon/Power.h
./MacOSX10.4u.sdk/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServices.framework/Versions/A/Headers/Power.h
./MacOSX10.5.sdk/Developer/Headers/FlatCarbon/Power.h
./MacOSX10.5.sdk/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServices.framework/Versions/A/Headers/Power.h
但我得到：
Mac.mm:6:29: error: OSServices/Power.h: No such file or directory
Mac.mm:6:29: error: OSServices/Power.h: No such file or directory
推荐答案
您仍然可以调用 UpdateSystemActivity
API的文档指定导入 CoreServices / CoreServices.h 获取API - 但是通过标题（特别是在 OSServices / OSServices.h 中）搜索显示在64位环境中省略了该文件。然而，有一些 Power.h （其中 UpdateSystemActivity 被定义）被关闭64位， code> UpdateSystemActivity 不是其中之一。
The documentation for the API specifies importing CoreServices/CoreServices.h to get the API -- however hunting through the headers (notably in OSServices/OSServices.h) shows that the file is omitted in a 64bit environment. Nevertheless, there are sections of Power.h (where UpdateSystemActivity is defined) that are turned off for 64bits, and UpdateSystemActivity is not one of them.
鉴于此，请尝试 #import< ; OSServices / Power.h> ，看看是否能正常工作。 （您必须在项目中包含CoreServices框架，以便找到标题。）
In light of that, try to #import <OSServices/Power.h> directly and see if that works. (You'll have to include the CoreServices framework in your project for the header to be found as well.)
这篇关于什么是UpdateSystemActivity的Cocoa等价物？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！