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Hi, I was looking into a way to delete a registry key (not a specific value, an entire key) if it is present. I was considering using RegRead and RegDelete. However, RegRead appears to only read values, not just keys. Is there a way to delete an entire registry key if it is present? I have heard that the below function may help. #include-once ; #UDF# ======================================================================================================================= ; Title .........: Reads\Search the name of a Key\Subkey\Value ; AutoIt Version : 3.3.8.1 ; Language ......: English ; Description ...: Lists all Keys\Subkeys\Values in a specified registry key ; Author(s) .....: DXRW4E ; Notes .........: ; =============================================================================================================================== ; #CURRENT# ===================================================================================================================== ;~ _RegEnumKeyEx ;~ _RegEnumValEx ; =============================================================================================================================== #Region ;**** Global constants and vars **** Global Const $sValueTypes[12] = ["REG_NONE","REG_SZ","REG_EXPAND_SZ","REG_BINARY","REG_DWORD","REG_DWORD_BIG_ENDIAN","REG_LINK","REG_MULTI_SZ","REG_RESOURCE_LIST","REG_FULL_RESOURCE_DESCRIPTOR","REG_RESOURCE_REQUIREMENTS_LIST","REG_QWORD"] #EndRegion ;**** Global constants and vars **** ; #FUNCTION# ======================================================================================================================== ; Name...........: _RegEnumKeyEx ; Description ...: Lists all subkeys in a specified registry key ; Syntax.........: _RegEnumKeyEx($KeyName[, $iFlag = 0[, $sFilter = "*"]]) ; Parameters ....: $KeyName - The registry key to read. ; $iFlag - Optional specifies Recursion (add the flags together for multiple operations): ; |$iFlag = 0 (Default) All Key-SubKeys Recursive Mod ; |$iFlag = 1 All SubKeys Not Recursive Mod ; |$iFlag = 2 Include in ArrayList in the first element $KeyName ; |$iFlag = 16 $sFilter do Case-Sensitive matching (By Default $sFilter do Case-Insensitive matching) ; |$iFlag = 32 Disable the return the count in the first element - effectively makes the array 0-based (must use UBound() to get the size in this case). ; By Default the first element ($array[0]) contains the number of strings returned, the remaining elements ($array[1], $array[2], etc.) ; |$iFlag = 64 $sFilter is REGEXP Mod, See Pattern Parameters in StringRegExp ; |$iFlag = 128 Enum value's name (_RegEnumKeyEx Return a 2D array, maximum Array Size limit is 3999744 Key\Value) ; |$iFlag = 256 Reads a value data, this flag will be ignored if the $iFlag = 128 is not set ; $sFilter - Optional the filter to use, default is *. (Multiple filter groups such as "All "*.XXx|*.YYY|*.ZZZ") ; Search the Autoit3 helpfile for the word "WildCards" For details. ; $vFilter - Optional the filter to use for ValueName, $vFilter will be ignored if the $iFlag = 128 is not set ; default is *. (Multiple filter groups such as "All "*.XXx|*.YYY|*.ZZZ") Search the Autoit3 helpfile for the word "WildCards" For details. ; $iValueTypes - Optional, set Value Types to search (Default $iValueTypes = 0 Read All), $iValueTypes will be ignored if the $iFlag = 128 is not set ; (add the flags together for multiple operations): ; 1 = REG_SZ ; 2 = REG_EXPAND_SZ ; 3 = REG_BINARY ; 4 = REG_DWORD ; 5 = REG_DWORD_BIG_ENDIAN ; 6 = REG_LINK ; 7 = REG_MULTI_SZ ; 8 = REG_RESOURCE_LIST ; 9 = REG_FULL_RESOURCE_DESCRIPTOR ; 10 = REG_RESOURCE_REQUIREMENTS_LIST ; 11 = REG_QWORD ; Return values .: Success - Return Array List (See Remarks) ; Failure - @Error ; |1 = Invalid $sFilter ; |2 = No Key-SubKey(s) Found ; |3 = Invalid $vFilter ; |4 = No Value-Name(s) Found ; Author ........: DXRW4E ; Modified.......: ; Remarks .......: The array returned is one-dimensional and is made up as follows: ; $array[0] = Number of Key-SubKeys returned ; $array[1] = 1st Key\SubKeys ; $array[2] = 2nd Key\SubKeys ; $array[3] = 3rd Key\SubKeys ; $array[n] = nth Key\SubKeys ; ; If is set the $iFlag = 128 The array returned is 2D array and is made up as follows: ; $array[0][0] = Number of Key-SubKeys returned ; $array[1][0] = 1st Key\SubKeys ; $array[1][1] = 1st Value name ; $array[1][2] = 1st Value Type (REG_NONE or REG_SZ or REG_EXPAND_SZ ect ect) ; $array[1][3] = 1st Value Data (If is set $iFlag = 256 Else Value Data = "") ; $array[2][0] = 2nd Key\SubKeys ; $array[2][1] = 2nd Value name ; $array[2][2] = 2nd Value Type (REG_NONE or REG_SZ or REG_EXPAND_SZ ect ect) ; $array[2][3] = 2nd Value Data (If is set $iFlag = 256 Else Value Data = "") ; $array[n][0] = nth Key\SubKeys ; Related .......: _RegEnumValEx() ; Link ..........: ; Example .......: _RegEnumKeyEx("HKEY_CURRENT_USER\Software\AutoIt v3") ; Note ..........: ; =================================================================================================================================== Func _RegEnumKeyEx($KeyName, $iFlag = 0, $sFilter = "*", $vFilter = "*", $iValueTypes = 0) If StringRegExp($sFilter, StringReplace("^\s*$|\v|\\|^\||\|\||\|$", Chr(BitAND($iFlag, 64) + 28) & "\|^\||\|\||\|$", "\\\\")) Then Return SetError(1, 0, "") Local $IndexSubKey[101] = [100], $SubKeyName, $BS = "\", $sKeyList, $I = 1, $sKeyFlag = BitAND($iFlag, 1), $sKeyFilter = StringReplace($sFilter, "*", "") If BitAND($iFlag, 2) Then $sKeyList = @LF & $KeyName If Not BitAND($iFlag, 64) Then $sFilter = StringRegExpReplace(BitAND($iFlag, 16) & "(?i)(", "16\(\?\i\)|\d+", "") & StringRegExpReplace(StringRegExpReplace(StringRegExpReplace(StringRegExpReplace($sFilter, "[^*?|]+", "\\Q$0\\E"), "\\E(?=\||$)", "$0\$"), "(?<=^|\|)\\Q", "^$0"), "\*+", ".*") & ")" While $I $IndexSubKey[$I] += 1 $SubKeyName = RegEnumKey($KeyName, $IndexSubKey[$I]) If @error Then $IndexSubKey[$I] = 0 $I -= 1 $KeyName = StringLeft($KeyName, StringInStr($KeyName, "\", 1, -1) - 1) ContinueLoop EndIf If $sKeyFilter Then If StringRegExp($SubKeyName, $sFilter) Then $sKeyList &= @LF & $KeyName & $BS & $SubKeyName Else $sKeyList &= @LF & $KeyName & $BS & $SubKeyName EndIf If $sKeyFlag Then ContinueLoop $I += 1 If $I > $IndexSubKey[0] Then $IndexSubKey[0] += 100 ReDim $IndexSubKey[$IndexSubKey[0] + 1] EndIf $KeyName &= $BS & $SubKeyName WEnd If Not $sKeyList Then Return SetError(2, 0, "") If BitAND($iFlag, 128) <> 128 Then Return StringSplit(StringTrimLeft($sKeyList, 1), @LF, StringReplace(BitAND($iFlag, 32), "32", 2)) $sKeyList = _RegEnumValEx(StringSplit(StringTrimLeft($sKeyList, 1), @LF), $iFlag, $vFilter, $iValueTypes) Return SetError(@Error, 0, $sKeyList) EndFunc ; #FUNCTION# ======================================================================================================================== ; Name...........: _RegEnumValEx ; Description ...: Lists all values in a specified registry key ; Syntax.........: _RegEnumValEx($KeyName[, $iFlag = 0[, $sFilter = "*"]]) ; Parameters ....: $KeyName - The registry key to read Or one-dimensional array RegKeyList ; use _RegEnumKeyEx() to get $RegKeyList (example $RegKeyList = [3, 1st Key\SubKeys, 2st Key\SubKeys, nth Key\SubKeys]) ; |$iFlag = 16 $sFilter do Case-Sensitive matching (By Default $sFilter do Case-Insensitive matching) ; |$iFlag = 32 Disable the return the count in the first element - effectively makes the array 0-based (must use UBound() to get the size in this case). ; By Default the first element ($array[0]) contains the number of strings returned, the remaining elements ($array[1], $array[2], etc.) ; |$iFlag = 64 $sFilter is REGEXP Mod, See Pattern Parameters in StringRegExp ; |$iFlag = 256 Reads a value data ; $sFilter - Optional the filter to use, default is *. (Multiple filter groups such as "All "*.XXx|*.YYY|*.ZZZ") ; Search the Autoit3 helpfile for the word "WildCards" For details. ; $iValueTypes - Optional, set Value Types to search (Default $iValueTypes = 0 Read All) ; (add the flags together for multiple operations): ; 1 = REG_SZ ; 2 = REG_EXPAND_SZ ; 3 = REG_BINARY ; 4 = REG_DWORD ; 5 = REG_DWORD_BIG_ENDIAN ; 6 = REG_LINK ; 7 = REG_MULTI_SZ ; 8 = REG_RESOURCE_LIST ; 9 = REG_FULL_RESOURCE_DESCRIPTOR ; 10 = REG_RESOURCE_REQUIREMENTS_LIST ; 11 = REG_QWORD ; Return values .: Success - Return Array List (See Remarks) ; Failure - @Error ; |3 = Invalid $sFilter ; |4 = No Value-Name(s) Found ; Author ........: DXRW4E ; Modified.......: ; Remarks .......: The array returned is 2D array and is made up as follows: ; $array[0][0] = Number of Key-SubKeys returned ; $array[1][0] = 1st Key\SubKeys ; $array[1][1] = 1st Value name ; $array[1][2] = 1st Value Type (REG_NONE or REG_SZ or REG_EXPAND_SZ ect ect) ; $array[1][3] = 1st Value Data (If is set $iFlag = 256 Else Value Data = "") ; $array[2][0] = 2nd Key\SubKeys ; $array[2][1] = 2nd Value name ; $array[2][2] = 2nd Value Type (REG_NONE or REG_SZ or REG_EXPAND_SZ ect ect) ; $array[2][3] = 2nd Value Data (If is set $iFlag = 256 Else Value Data = "") ; $array[n][0] = nth Key\SubKeys ; Related .......: _RegEnumKeyEx() ; Link ..........: ; Example .......: _RegEnumValEx("HKEY_CURRENT_USER\Software\AutoIt v3") ; Note ..........: ; =================================================================================================================================== Func _RegEnumValEx($aKeyList, $iFlag = 0, $sFilter = "*", $iValueTypes = 0) If StringRegExp($sFilter, "\v") Then Return SetError(3, 0, "") If Not IsArray($aKeyList) Then $aKeyList = StringSplit($aKeyList, @LF) Local $aKeyValList[1954][4], $iKeyVal = Int(BitAND($iFlag, 32) = 0), $sKeyVal = 1953, $sRegEnumVal, $iRegEnumVal, $RegRead = BitAND($iFlag, 256), $vFilter = StringReplace($sFilter, "*", "") If Not BitAND($iFlag, 64) Then $sFilter = StringRegExpReplace(BitAND($iFlag, 16) & "(?i)(", "16\(\?\i\)|\d+", "") & StringRegExpReplace(StringRegExpReplace(StringRegExpReplace(StringRegExpReplace($sFilter, "[^*?|]+", "\\Q$0\\E"), "\\E(?=\||$)", "$0\$"), "(?<=^|\|)\\Q", "^$0"), "\*+", ".*") & ")" For $i = 1 To $aKeyList[0] $iRegEnumVal = 0 While 1 If $iKeyVal = $sKeyVal Then If $sKeyVal = 3999744 Then ExitLoop $sKeyVal *= 2 ReDim $aKeyValList[$sKeyVal + 1][4] EndIf $aKeyValList[$iKeyVal][0] = $aKeyList[$i] $iRegEnumVal += 1 $sRegEnumVal = RegEnumVal($aKeyList[$i], $iRegEnumVal) If @Error <> 0 Then If $iRegEnumVal = 1 And $vFilter = "" Then $iKeyVal += 1 ExitLoop EndIf $aKeyValList[$iKeyVal][2] = $sValueTypes[@Extended] If BitAND(@Extended, $iValueTypes) <> $iValueTypes Then ContinueLoop If $vFilter And Not StringRegExp($sRegEnumVal, $sFilter) Then ContinueLoop $aKeyValList[$iKeyVal][1] = $sRegEnumVal If $RegRead Then $aKeyValList[$iKeyVal][3] = RegRead($aKeyList[$i], $sRegEnumVal) $iKeyVal += 1 WEnd Next $sRegEnumVal = $iKeyVal - Int(BitAND($iFlag, 32) = 0) If Not $sRegEnumVal Or ($sRegEnumVal = 1 And $vFilter = "" And $aKeyValList[$iKeyVal - $sRegEnumVal][2] = "") Then Return SetError(4, 0, "") ReDim $aKeyValList[$iKeyVal][4] If Not BitAND($iFlag, 32) Then $aKeyValList[0][0] = $iKeyVal - 1 Return $aKeyValList EndFunc Thanks.

Hello! I've found some not obvious behaivor of RegDelete() function. So If we already have created registry key 'HKEY_LOCAL_MACHINE\SYSTEM\Test' _without_ 'value' in it. RegDelete() will will raise an Error with code = 1 ( according to documentation 1 means - Unable to open requested key ), instead of code = -2 ( unable to delete requested key/value ). This code running under account without administrative right, will return @error = 1 even if 'HKEY_LOCAL_MACHINE\SYSTEM\Test' already existing key and no 'value' in it. $i_regdelete_result = RegDelete( 'HKEY_LOCAL_MACHINE\SYSTEM\Test' , 'value' ) ; = 2 MsgBox( 0 , 'ERROR' , @error ) ; = 1 Maybe this is due to RegDelete() tries to open target key with write access and gets denied. So I thought that this is not so obvious as it can be. And naturally $i_regdelete_result must have 0 in this scenario ( according to documenatation 0 means Special return value of RegDelete when key/value does not exist )