Get last installed service pack version: Difference between revisions

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Here is a simple routine to detect last Service Pack installed on PC.
Here is a simple routine to detect last Service Pack installed on PC.


(modification --[[User:Charlesb|Charlesb]] 09:42, 23 February 2006 (PST): ReadRegStr replaced by ReadRegDWORD; Save $R0 and $R1
(modification --[[User:Charlesb|Charlesb]] 09:43, 23 February 2006 (PST): ReadRegStr replaced by ReadRegDWORD; Save $R0 and $R1
== The Function ==
== The Function ==
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Revision as of 17:43, 23 February 2006

Author: alessiog (talk, contrib)


Description

Here is a simple routine to detect last Service Pack installed on PC.

(modification --Charlesb 09:43, 23 February 2006 (PST): ReadRegStr replaced by ReadRegDWORD; Save $R0 and $R1

The Function

;-------------------------------------------------------------------------------
; GetServicePack
; Author: Alessio Garbi (e-Project srl) <agarbi@e-project.it> 
;
; input:
;			none
; output:
;    	top of stack: last service pack major version
;    	top of stack-1: last service pack minor version
; note:
;			If no service pack installed returns major ver "0" and minor ver "0"
;			Function tested with Win 95, 98SE, NT4, 2000, XP, 2003 (lang ITA and ENG)
 
Function GetServicePack
	Push $R0
	Push $R1
 
	ReadRegDWORD $R0 HKLM "System\CurrentControlSet\Control\Windows" "CSDVersion"
	IntOp $R1 $R0 % 256			;get minor version
	IntOp $R0 $R0 / 256			;get major version
 
	Exch $R1
	Exch
	Exch $R0
FunctionEnd