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Here is a small function that lists installed applications from the registry (uninstall keys). _UninstallList() allows to search on specific string in registry values. The feature supports x86 and x64, even if the program is compiled in 32 or 64 bits. Thanks for you comments and suggestions. ! NEW VERSION ! Changes : - The function returns the installation date of each application (see remark) - $sCol parameter added : allows you to add columns in the returned array Remark : the installation date is retrieved from the InstallDate value in the registry. If this value does not exist, the InstallDate takes the last time at which the subkey was last written (great idea from JFX, thanks to him !) #include <Date.au3> ; needed for _UninstallList function ; Examples ########################################################################################################## #Include <Array.au3> ; Just for _ArrayDisplay Local $aList ; Lists all uninstall keys $aList = _UninstallList() _ArrayDisplay($aList, "All uninstall keys", Default, Default, Default, "RegistryPath|RegistrySubKey|DisplayName|Date") ; Lists all keys, where the publisher name (Publisher value) starts with "adobe" $aList = _UninstallList("Publisher", "Adobe") _ArrayDisplay($aList, "Adobe Publisher", Default, Default, Default, "RegistryPath|RegistrySubKey|DisplayName|Date") ; Lists all x86 keys only, where the name (DisplayName value) contains "flash" $aList = _UninstallList("DisplayName", "Flash", "", 1, 1) _ArrayDisplay($aList, "Flash (x86)", Default, Default, Default, "RegistryPath|RegistrySubKey|DisplayName|Date") ; Lists all keys matching a Java version (using a regular expression) $aList = _UninstallList("DisplayName", "(?i)Java \d+ Update \d+", "", 3) _ArrayDisplay($aList, "Java", Default, Default, Default, "RegistryPath|RegistrySubKey|DisplayName|Date") ; Lists all x64 keys only, where the quiet uninstall string (QuietUninstallString value) is set $aList = _UninstallList("QuietUninstallString", ".+", "QuietUninstallString", 3, 2) _ArrayDisplay($aList, "QuietUninstallString (x64)", Default, Default, Default, "RegistryPath|RegistrySubKey|DisplayName|Date|QuietUninstallString") ; List all x86 keys only, where the name (DisplayName value) start with "Autoit" and retrieve the ; UninstallString, DisplayVersion values $aList = _UninstallList("DisplayName", "Autoit", "UninstallString|DisplayVersion", 0, 1) _ArrayDisplay($aList, "Autoit (x86)", Default, Default, Default, "RegistryPath|RegistrySubKey|DisplayName|Date|UninstallString|DisplayVersion") ; ################################################################################################################### ; #FUNCTION# ==================================================================================================================== ; Name ..........: _UninstallList ; Description ...: Returns an array of matching uninstall keys from registry, with an optional filter ; Syntax ........: _UninstallList([$sValueName = ""[, $sFilter = ""[, $sCols = ""[, $iSearchMode = 0[,$ iArch = 3]]]]]]) ; Parameters ....: $sValueName - [optional] Registry value used for the filter. ; Default is all keys ($sFilter do not operates). ; $sFilter - [optional] String to search in $sValueName. Filter is not case sensitive. ; $sCols - [optional] Additional values to retrieve. Use "|" to separate each value. ; Each value adds a column in the returned array ; $iSearchMode - [optional] Search mode. Default is 0. ; 0 : Match string from the start. ; 1 : Match any substring. ; 2 : Exact string match. ; 3 : $sFilter is a regular expression ; $iArch - [optional] Registry keys to search in. Default is 3. ; 1 : x86 registry keys only ; 2 : x64 registry keys only ; 3 : both x86 and x64 registry keys ; Return values .: Returns a 2D array of registry keys and values : ; $array[0][0] : Number of keys ; $array[n][0] : Registry key path ; $array[n][1] : Registry subkey ; $array[n][2] : Display name ; $array[n][3] : Installation date (YYYYMMDD format) ; $array[n][4] : 1st additional value specified in $sCols (only if $sCols is set) ; $array[n][5] : 2nd additional value specified in $sCols (only if $sCols contains at least 2 entries) ; $array[n][x] : Nth additional value ... ; Author ........: jguinch ; =============================================================================================================================== Func _UninstallList($sValueName = "", $sFilter = "", $sCols = "", $iSearchMode = 0, $iArch = 3) Local $sHKLMx86, $sHKLM64, $sHKCU = "HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall" Local $aKeys[1] = [ $sHKCU ] Local $sDisplayName, $sSubKey, $sKeyDate, $sDate, $sValue, $iFound, $n, $aResult[1][4], $iCol Local $aCols[1] = [0] If NOT IsInt($iArch) OR $iArch < 0 OR $iArch > 3 Then Return SetError(1, 0, 0) If NOT IsInt($iSearchMode) OR $iSearchMode < 0 OR $iSearchMode > 3 Then Return SetError(1, 0, 0) $sCols = StringRegExpReplace( StringRegExpReplace($sCols, "(?i)(DisplayName|InstallDate)\|?", ""), "\|$", "") If $sCols <> "" Then $aCols = StringSplit($sCols, "|") If @OSArch = "X86" Then $iArch = 1 $sHKLMx86 = "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" Else If @AutoitX64 Then $sHKLMx86 = "HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall" $sHKLM64 = "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" Else $sHKLMx86 = "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" $sHKLM64 = "HKLM64\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" EndIf EndIf If BitAND($iArch, 1) Then Redim $aKeys[ UBound($aKeys) + 1] $aKeys [ UBound($aKeys) - 1] = $sHKLMx86 EndIf If BitAND($iArch, 2) Then Redim $aKeys[ UBound($aKeys) + 1] $aKeys [ UBound($aKeys) - 1] = $sHKLM64 EndIf For $i = 0 To UBound($aKeys) - 1 $n = 1 While 1 $iFound = 1 $aSubKey = _RegEnumKeyEx($aKeys[$i], $n) If @error Then ExitLoop $sSubKey = $aSubKey[0] $sKeyDate = StringRegExpReplace($aSubKey[1], "^(\d{4})/(\d{2})/(\d{2}).+", "$1$2$3") $sDisplayName = RegRead($aKeys[$i] & "\" & $sSubKey, "DisplayName") $sDate = RegRead($aKeys[$i] & "\" & $sSubKey, "InstallDate") If $sDate = "" Then $sDate = $sKeyDate If $sDisplayName <> "" Then If $sValueName <> "" Then $iFound = 0 $sValue = RegRead( $aKeys[$i] & "\" & $sSubKey, $sValueName) If ( $iSearchMode = 0 AND StringInStr($sValue, $sFilter) = 1 ) OR _ ( $iSearchMode = 1 AND StringInStr($sValue, $sFilter) ) OR _ ( $iSearchMode = 2 AND $sValue = $sFilter ) OR _ ( $iSearchMode = 3 AND StringRegExp($sValue, $sFilter) ) Then $iFound = 1 EndIf EndIf If $iFound Then Redim $aResult[ UBound($aResult) + 1][ 4 + $aCols[0] ] $aResult[ UBound($aResult) - 1][0] = $aKeys[$i] $aResult[ UBound($aResult) - 1][1] = $sSubKey $aResult[ UBound($aResult) - 1][2] = $sDisplayName $aResult[ UBound($aResult) - 1][3] = $sDate For $iCol = 1 To $aCols[0] $aResult[ UBound($aResult) - 1][3 + $iCol] = RegRead( $aKeys[$i] & "\" & $sSubKey, $aCols[$iCol]) Next EndIf EndIf $n += 1 WEnd Next $aResult[0][0] = UBound($aResult) - 1 Return $aResult EndFunc ; #FUNCTION# ==================================================================================================================== ; Name ..........: _RegEnumKeyEx ; Description ...: Enumerates the subkeys of the specified open registry key. The function retrieves information about one subkey ; each time it is called. ; Syntax ........: _RegEnumKeyEx($sKey, $iInstance) ; Parameters ....: $sKey - The registry key to read. ; $iInstance - The 1-based key instance to retrieve. ; Return values .: Success - A 1D array : ; $aArray[0] = subkey name ; $aArray[1] = time at which the enumerated subkey was last written ; Failure - Returns 0 and set @eror to non-zero value ; Author ........: jguinch ; =============================================================================================================================== Func _RegEnumKeyEx($sKey, $iInstance) If NOT IsDeclared("KEY_WOW64_32KEY") Then Local Const $KEY_WOW64_32KEY = 0x0200 If NOT IsDeclared("KEY_WOW64_64KEY") Then Local Const $KEY_WOW64_64KEY = 0x0100 If NOT IsDeclared("KEY_ENUMERATE_SUB_KEYS") Then Local Const $KEY_ENUMERATE_SUB_KEYS = 0x0008 If NOT IsDeclared("tagFILETIME") Then Local Const $tagFILETIME = "struct;dword Lo;dword Hi;endstruct" Local $iSamDesired = $KEY_ENUMERATE_SUB_KEYS Local $iX64Key = 0, $sRootKey, $aResult[2] Local $sRoot = StringRegExpReplace($sKey, "\\.+", "") Local $sSubkey = StringRegExpReplace($sKey, "^[^\\]+\\", "") $sRoot = StringReplace($sRoot, "64", "") If @extended Then $iX64Key = 1 If NOT IsInt($iInstance) OR $iInstance < 1 Then Return SetError(2, 0, 0) Switch $sRoot Case "HKCR", "HKEY_CLASSES_ROOT" $sRootKey = 0x80000000 Case "HKLM", "HKEY_LOCAL_MACHINE" $sRootKey = 0x80000002 Case "HKCU", "HKEY_CURRENT_USER" $sRootKey = 0x80000001 Case "HKU", "HKEY_USERS" $sRootKey = 0x80000003 Case "HKCC", "HKEY_CURRENT_CONFIG" $sRootKey = 0x80000005 Case Else Return SetError(1, 0, 0) EndSwitch If StringRegExp(@OSArch, "64$") Then If @AutoItX64 OR $iX64Key Then $iSamDesired = BitOR($iSamDesired, $KEY_WOW64_64KEY) Else $iSamDesired = BitOR($iSamDesired, $KEY_WOW64_32KEY) EndIf EndIf Local $aRetOPen = DllCall('advapi32.dll', 'long', 'RegOpenKeyExW', 'handle', $sRootKey, 'wstr', $sSubKey, 'dword', 0, 'dword', $iSamDesired, 'ulong_ptr*', 0) If @error Then Return SetError(@error, @extended, 0) If $aRetOPen[0] Then Return SetError(10, $aRetOPen[0], 0) Local $hKey = $aRetOPen[5] Local $tFILETIME = DllStructCreate($tagFILETIME) Local $lpftLastWriteTime = DllStructGetPtr($tFILETIME) Local $aRetEnum = DllCall('Advapi32.dll', 'long', 'RegEnumKeyExW', 'long', $hKey, 'dword', $iInstance - 1, 'wstr', "", 'dword*', 255, 'dword', "", 'ptr', "", 'dword', "", 'ptr', $lpftLastWriteTime) If Not IsArray($aRetEnum) OR $aRetEnum[0] <> 0 Then Return SetError( 3, 0, 1) Local $tFILETIME2 = _Date_Time_FileTimeToLocalFileTime($lpftLastWriteTime) Local $localtime = _Date_Time_FileTimeToStr($tFILETIME2, 1) $aResult[0] = $aRetEnum[3] $aResult[1] = $localtime Return $aResult EndFunc