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> Windows > wether to use invoke or cinvoke for dll functions |
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shutdownall 24 May 2012, 17:35
Maybe this question have been answered already but could not find relevant information with search function in adaquate time.
How do I know wether to use invoke or cinvoke macro to call a DLL function ? I think the MS DLL's are all compatible with the invoke macro but what about custom DLL's not designed by MS ? How can I obtain the calling procedure if not provided in documents ? Concrete case is for this API http://www.ftdichip.com/Support/Documents/ProgramGuides/D2XX_Programmer%27s_Guide%28FT_000071%29.pdf But would be good to know in general for future / other provided API's. Thanks for help.  |
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24 May 2012, 17:35 |
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LocoDelAssembly 24 May 2012, 18:30
By looking at FTD2XX.H in example 1 I'd say they are stdcall and therefore you must use invoke. The reason I think they are stdcall is because they are marked WINAPI (which is defined as __stdcall).
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24 May 2012, 18:30 |
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revolution 24 May 2012, 20:46
Yes, you use invoke. This is from my code:
Code: invoke FT_SetBaudRate,[comm_handle],FT_BAUD_115200 |
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24 May 2012, 20:46 |
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revolution 24 May 2012, 22:23
shutdownall wrote: But is there a general rule what macro to use under which circumstances ... cinvoke for ccall invoke for stdcall shutdownall wrote: ... (if documentation is not provided or not with that detail) ? ret = ccall ret imm = stdcall |
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24 May 2012, 22:23 |
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