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static variable error

 
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lostworld
Guest
PostPosted: Wed Feb 24, 2010 12:03 pm    Post subject: static variable error Reply with quote
hi when i use static in my script it gives error something like below
Code:

static a ;;;; error no recognized action
a=1
msgbox %a%
return

the purpose for using static variable is when i start the script next time the value should be 2 that is value should be saved at every run but how to achieve this???
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Klaus



Joined: 12 May 2005
Posts: 325
Location: Münster, Germany
PostPosted: Wed Feb 24, 2010 12:15 pm    Post subject: Reply with quote
Hi, lostworld,
static variables can be used in functions only. If you need to have a continuous content of a variable in your main programme persistent over several programme ends and starts, you have to write the content of the variable to an .INI-file (as one possibility) at programme's exit and re-read/restore it at the next start of your application.
Have a look at IniRead and Iniwrite in the manual.
Hope I could help,
Klaus
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lostworld
Guest
PostPosted: Wed Feb 24, 2010 12:19 pm    Post subject: Reply with quote
thanks buddy will see to it
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lostworld
Guest
PostPosted: Wed Feb 24, 2010 12:38 pm    Post subject: Reply with quote
yep i succeeded...thanks Klaus
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Lexikos



Joined: 17 Oct 2006
Posts: 7295
Location: Australia
PostPosted: Wed Feb 24, 2010 12:44 pm    Post subject: Reply with quote
I like to use this trick:
Code:
/*
[init]
*/
var=1

var += 1
IniWrite, %var%, %A_ScriptFullPath%, init, var
Of course, it won't work if the script is compiled. If 'var=' is misplaced, IniWrite will haphazardly throw a new one in somewhere. It's usually safer (but less cool since you need to use IniRead) to put the INI section at the end:
Code:
IniRead, var, %A_ScriptFullPath%, section, var
var += 1
IniWrite, %var%, %A_ScriptFullPath%, section, var
/*
[section]
var=1
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Guest
PostPosted: Wed Feb 24, 2010 1:38 pm    Post subject: Reply with quote
Lexikos wrote:
(but less cool since you need to use IniRead)

...is this cooler?...

cannibal.ahk wrote:
Code:
Gosub, Settings

var++
IniWrite, %var%, %A_ScriptFullPath%, Settings, var

/*
[Settings]
*/
Settings:
var=1
return

...also a bug/annoyance: I save the script with no line break at the end of the file & the IniWrite adds one next time I run it...why?...(I understand if it's just the WinAPI doing it, but it's still annoying)...

Also, I hate ini files being written when there is no change, so I might need to write an IniWrite() function to only really write if the requested write is different than what's in there already...
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lostworld
Guest
PostPosted: Thu Feb 25, 2010 6:24 am    Post subject: Reply with quote
thanks to all i tried quite similar as Lexikos and its working properly...whenever the file is run the variable has the last incremented value and thats what i was expecting and its working fine so thanks again to all
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