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Index > Main > ccall#call; cinvoke#invoke? help me

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MinhHung



Joined: 10 Sep 2010
Posts: 51
Location: Viet Nam
MinhHung
hi!

everybody can tell me what are different between ccall and call, cinvoke and invoke

In some case i must use cinvoke, if i use "invoke" my application will crash
why?

thank for reply Very Happy


sorry for my english

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sorry for my english
Post 21 Dec 2010, 02:39
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17467
Location: In your JS exploiting you and your system
revolution
invoke, cinvoke, stdcall and ccall are macros to support calling conventions.

call is an assembler instruction supported by the CPU.

Use invoke for all Windows API calls except wsprintf (STDCALL)

Use cinvoke for all C library calls and wsprintf (CDECL)

Use ccall to call internal functions you have defined as CDECL compliant.

Use stdcall to call internal functions you have defined as STDCALL compliant.
Post 21 Dec 2010, 03:01
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Tyler



Joined: 19 Nov 2009
Posts: 1216
Location: NC, USA
Tyler
The difference between invoke and stdcall is that invoke calls the address at the address you pass, and stdcall calls the address itself. invoke internally uses stdcall to call the address at an address(ie with []). The same is true for the two cdecl macros.

To give an illustration:
Code:
invoke function, arg1, arg2 ; is the same as...
stdcall [function], arg1, arg2
    


Like revolution said, if you want to call a label you use stdcall or its cdecl cousin. When calling a label, you use it without [].
Post 21 Dec 2010, 08:04
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