OS X API Calls?
Archives Forums/MacOS X Discussion/OS X API Calls?
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| Is BlitzMax capable of interfacing with the OS X API system? Thanks, -Garrett |
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| I think yes but i don't know how.......i'm sorry......... |
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| Check the help section "Language/Advanced topics". Yes, you can access system APIs. ;-) |
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| Heyyyyy..... Totally forgot I asked this question. Thanks Lestroso, and thanks Winni for the replies. Winni, thanks, I'll check the docs on that. -Garrett |
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| winni ....in that page there's only a c++ and asm discussion..........so you can implement c++and asm in your program.....but i dont' see the api calls..... bye --Lestroso |
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| Hi Lestroso, But that is exactly what this whole API thing is about: You use this feature of BlitzMax to write wrappers for API calls. Usually, you write some C-code to call the system function that you need and just link it to your Blitzmax program. In the C module, the most important part will probably be to include the required header files and call the correct system functions. The point here is that you will have to study quite a lot of Apple's developer documentation to find what you need. This little thing here e.g. calls an OS X API function that will spawn a new thread running a function that you wrote in BlitzMax: Import "-std=c99" ' Import "macthread.c" ' Extern Function CreateThread(threadfunction())="bmx_createthread" EndExtern Now define a function in your BlitzMax code and call CreateThread( myFunction ). The C-code does the actual API calls. In this case, it will call the system functions to create a new thread. macthread.c: ---------------- #include <stdlib.h> #include <pthread.h> long bmx_createthread(void *functionC()) { int rc1; pthread_t thread1; pthread_attr_t stack_size; pthread_attr_init(&stack_size); pthread_attr_setstacksize(&stack_size, 1048576); rc1=pthread_create(&thread1,&stack_size,functionC,NULL); return (long)thread1; } If you look around for SQLiter and TeaMonkey's SQLite module, then you can get an impression of how it (sometimes) can be done without writing C-code yourself. But still, you need to know what to link against your own code, and without some basic understanding of C (not C++, just C) you will most likely not get very far. BTW, the whole MaxGUI thing is basically a huge wrapper for API calls - actually Cocoa calls (which is an Objective-C API). Hope this helps a bit, W. |
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| Nice reply Wini ! |
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| what is the ="bmx_createthread" text after the external function declaration? |
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| Winny i'm sorry, you're right....nice example....do you have something else examples codes ? thanks a lot........... Lestroso |
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| Hi there, Lestroso, you can download GMan's MySQL & PostgreSQL wrapper classes, he's using that stuff a lot. Or you can scrutinize the MaxGUI source code. AngelDaniel, I guess =bmx_createthread maps the BlitzMax function declaration to the C-function. I only took that code from the german BlitzMax forum and modified it a bit so it would run on my Mac, but I think this is what the = thing actually means. HTH, W. |
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| So you have to provide some kind of internal symbol name, and you can make it up, doesn't have to be predefined format? My question: Does anyone see how it may be possible to use the screensaver/screensaver.h framework (and any of the headers that it includes) WITHIN BlitzMax, to use BlitzMax as the compiler, to get it to produce a real Mac screensaver? Aside for all the extra files and folders that a screensaver bundle needs, is it feasible that Blitz could compile the appropriate file with the appropriate code to make it be recognized as a valid screensaver? |
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| what is the ="bmx_createthread" text after the external function declaration? It's not required if you use the same function name in Max as you defined in C. e.g Extern Function bmx_CreateThread(threadfunction()) End Extern |
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