Hello, I've got probably what is a simple problem, but there's no informative errors or warnings during compile to alert me to what is going wrong. I've got a Objective-C++ app that includes a C++ main and ObjC header files. It builds fine, but when run, it gives this error message: Dyld Error Message: Symbol not found: _OBJC_CLASS...
I have a C++ library I want to add to my iphone project. In one header file I declare @interface a { cppvirtualclass V; } This compiles fine for the iPhone device with Release settings. However it refuses to compile for the Simulator with or without debug info. It give the error error: type 'V' has virtual member functions. Is...
What is the difference between void *bytes = alloca(size); and char bytes[size]; //Or to be more precise, char x[size]; void *bytes = x; ...where size is a variable whose value is unknown at compile-time. ...
I have the following objective-C++ header with the simple method to return this pointer. @interface MyObj { MyCPPObj * cpp; } -(MyCPPObj *) getObj; I have created the simple method @implementation MyObj -(MyCPPObj *) getObj { return cpp; } Everything seems to work until I actually try to use the object in another file newObj =...
I am using objective-C++ (+Boost) for iPhone development. I am in a rather tight loop and need to allocate and release a certain object. The code is something like this. for (int i=0;i<100;i++) { opt = [[FObj alloc] init]; //do stuff with opt [opt release]; } The FObj object is something like @interface FObj MyCPPObj ...
I'm writing this Augmented Reality app for the iPhone and I'd decided to use ARToolKitPlus for it. Using QMake, I created the xcode project file and subsequently the libArToolKitPlus.dylib I tried to compile and run the sample files "simple" and "multi" which worked well. Now all other attempts that I tried to create another project and...
This is a better understanding of a question I had earlier. I have the following Objective-C++ object @interface OCPP { MyCppobj * cppobj; } @end @implementation OCPP -(OCPP *) init { cppobj = new MyCppobj; } @end Then I create a completely differently obj which needs to use cppobj in a boost::shared_ptr (I have no choic...
I want to use/reuse C++ object with Objective-C. I have a hello.h that has the class definition, and hello.cpp for class implementation. class Hello { int getX() ... }; And I use this class in Objective-C function. #include "hello.h" ... - (IBAction) adderTwo:(id)sender { Hello *hi = new Hello(); int value = hi->g...
Hello, I'm trying to mix together some Objective-C code with C++. I've always heard it was possible, but I've never actually tried it before. When I try to compile the code, I get a bunch of errors. Here's a simple example I've created which illustrates my problems: AView.h #import <Cocoa/Cocoa.h> #include "B.h" @interface AView : ...
I have compiled my iPhone app with setting (Device, Release). I install it on the test machine and it runs with no problem. Here's the problem. The app is linked to a C++ library. The compilation on the simulator has no errors. However the device compilation produces 568 errors, mostly about different visibilities w.r.t AppDelegate.o. ...
C++ reference types as instance variables are forbidden in Objective-C++. How can I work around this? ...
Hey guys, Something really weird is happening: when I call foo(100*1.0f), somewhere along the line that becomes 0. To verify I put a breakpoint on foo(), and it indeed is zero and it indeed gets called with 100*1.0f. The code is in Obj-C++. Here is the calling function in XCode's GDB frontend, as you can see, score*scoreMultiplier is ...
I have embedded Lua in an Objective-C application using LuaObjCBridge. I need to know how to stop the Lua process if it taking too much time (infinite loop?). Would running it in a separate thread help? ...
I'd like to use a C++ stack type in Objective-C, but I'm running into some issues. Here's a sample of what I would like to do: #import <stack> #import <UIKit/UIKit.h> @interface A : NSObject { stack<SEL> selectorStack; } @end Unfortunately, this doesn't compile. After messing around with the code for a while and trying differe...
The function NSStringFromPoint disappears when I compile my code using objective-C++, but it's fine under objective-C. How can I make objective-C++ see that function? If I compile under Objective-C++ it says: error: 'NSStringFromPoint' was not declared in this scope error: 'NSStringFromRect' was not declared in this scope error: 'NSEq...
The "Build and analyze" option doesn't seem to work for .cpp and .mm files. I tried "clang --analyze" on individual files without any standard #includes and it works well. However I'm not able to run it on my Xcode project. I couldn't figure out a way to make clang find the standard #includes like even UIKit.h. Any clues? ...
There is a static class Pipe, defined in C++ header that I'm including. The static method I'm interested in calling (from Objective-c) is here: static ERC SendUserGet(const UserId &_idUser,const GUID &_idStyle,const ZoneId &_idZone,const char *_pszMsg); I have access to an objetive-c data structure that appears to store a copy of us...
So I've developed an engine for the iPhone with which I'd like to build a couple different games. Rather than copy and paste the files for the engine inside of each game's project directory, I'd a way to link to the engine from each game, so if I need to make a change to it I only have to do so once. After reeding around a little bit, ...
I was messing with my Objective-C++ namespace today. I found that Handle, Size and Duration are already defined in ObjC++. What are they defined to be and where are they defined? I have only #imported Foundation/Foundation.h ...
I have a project where I use two build settings predominantly. Unfortunately today something went wrong. One compiles and the other doesn't. How can I compare the two build settings in XCode to see what the differences are? (For those interested, the error I get in one build is jump to case label crosses initialization of 'const char*...