;定义注册表主键
!define HKEY_CLASSES_ROOT 0x80000000
!define HKEY_CURRENT_USER 0x80000001
!define HKEY_LOCAL_MACHINE 0x80000002
!define HKEY_USERS 0x80000003
OutFile OpenReg.exe
XPStyle on
!include LogicLib.nsh
;--------------------------------
Name OpenReg
Section Nil
SectionEnd
Function .onInit
;为键的句柄创建一个缓存
System::Call "*(i 0) i .R0"
;将要检测的键放入内存中
Push "SOFTWARETENCENTQQPinYin"
;调用API进行检查,返回值在$R1中
system::call 'Advapi32::RegOpenKey(i ${HKEY_LOCAL_MACHINE}, t s, i R0) .iR1'
;关闭该键的句柄
system::call 'Advapi32::RegCloseKey(i R0)'
;释放内存
system::free
;返回值:
;0代表键存在
;2代表键不存在
;其它值表示出错
${If} $R1 == 0
Messagebox mb_ok "Key Exists!"
${ElseIf} $R1 == 2
Messagebox mb_ok "Key doesn't Exists!"
${Else}
Messagebox mb_ok "Error!"
${EndIf}
Pop $R1
Pop $R0
Quit
FunctionEnd
THE END
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