ASM Community

You are getting your default time (that you initialised your buffer to), because the buffer you have supplied to the API is too small. You should call the function twice: the first time with a zero length buffer, this will fail, and the API will return the required buffer size in eax. Then you allocate a buffer of the same size as indicated by eax. Then you recall the function with the new buffer, the API will happily fill it.

thanks.

Now I get it.

.386
.model flat, stdcall
option casemap:none
include \masm32\include\windows.inc
include \masm32\include\kernel32.inc
include \masm32\include\user32.inc
includelib \masm32\lib\user32.lib
includelib \masm32\lib\kernel32.lib

.data
stm SYSTEMTIME<>
dateformat db "dd:MM:yyyy",0
buffer db 100 dup (0)

.code
start:
invoke GetLocalTime, addr stm
invoke GetDateFormat, LOCALE_USER_DEFAULT, NULL, \
addr stm,addr dateformat, addr buffer, sizeof buffer
invoke MessageBox, 0, addr buffer, NULL, MB_OK
invoke ExitProcess,NULL
end start

How about this:

[size=12]

.code



start:



	invoke 		GetLocalTime,	addr stm

	ASSUME 		edi		:PTR SYSTEMTIME 

	lea 		edi, 		stm                                    

	sub 		[edi].wYear,	1                                                    

	invoke 		MessageBox, 	0, addr stm.wYear, NULL, MB_OK 

	assume 		edi  		:nothing



[/size]

Oops, i forgot about that too. I obviously spend too much time in HLLs that implicitly do the conversion for you :/