core-foundation

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Sendind pointers to different process and using them?

Is it possibl开发者_C百科e to send a pointer to an object via Mach IPC by casting it into an int and then casting it back into the object. Would that work and how can that be done?[详细]

2023-01-11 18:24 分类：问答
Should I verify objects inside Foundation API containers?

In languages like C++ and C# when you create a contain such as a std::vector or a C# list you explicitly declare the container type when you create it:[详细]

2023-01-10 07:34 分类：问答
NSDecimalNumber to unsignedLongLong - wrong value

Here is code: NSNumber* number = [NSDecimalNumber decimalNumberWithString :@\"11111111111111111\"]; NSLog(@\"%@ = %lld\", number, [number unsignedLongLongValue]);[详细]

2023-01-08 18:25 分类：问答
CFDictionaryValueCallBacks retain/release?

Is there a constant retain callback I can use for generic id / NSObjects ? There is kCFTypeDictionaryValueCallBacks but they\'re only for \"CFType-derived objects.\" I don\'t believe NSObjects are CFT[详细]

2023-01-07 16:22 分类：问答
Want to find out if iPhone can receive incoming calls (airplane mode)

My appl开发者_如何学Pythonication\'s users don\'t like interruptions like incoming phone calls. I want to find out if the device is in Airplane mode, warn the user about possible interruptions and rec[详细]

2023-01-06 05:26 分类：问答
What is NSSearchPathForDirectoriesInDomains?

[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] I used to know that sending a message to the object is kind of calling the method. However, I can\'t reco[详细]

2023-01-05 22:59 分类：问答
Getting iPhone addressbook contents without GUI

I would like to list all phone numbers (or any other field) of people in the addressbook. I\'ve written the following code:[详细]

2023-01-05 16:32 分类：问答
CGContext widths seem to be over stretched

I\'m working with CGContext to create a simple square with four given points (the points should make a perfect square). However, instead of a 200px x 200px square, the iPad app makes, what looks like,[详细]

2023-01-05 13:07 分类：问答
Simple sound effect loop using AudioToolKit

I\'ve created a few sounds for use in my game. I can play them at certain events without issue: // create sounds[详细]

2023-01-03 11:13 分类：问答
CGEventTapCreate breaks down mysteriously with "key down" events

I\'m using CGEventTapCreate to \"steal\" media keys from iTunes when my app is running. The code inside of the callback that I pass to CGEv开发者_Go百科entTapCreate examines the event, and if it finds[详细]

2023-01-02 09:17 分类：问答