FASM Invoke Explanation

INVOKE is a macroinstruction that can be used for calling the procedures using STDCALL convention, arguments are pushed on stack in the reverse order. For example stdcall foo, 1, 2, 3 will be assembled as:

push 3
push 2
push 1
call foo

Here is another example how to call the WinAPI MessageBox:

push	MB_OK
push	_caption
push	_text
push    [hWnd]
call	[MessageBox]

is equal with

invoke MessageBox, [hWnd], _text, _caption, MB_OK