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Showing results for tags 'reg_dword'.
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I'm writing a little applet that basically tells you when Windows was installed. There is a REG_DWORD in Windows that gives you this. It's basically a value that is the # of seconds from 1970. The location is: "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\InstallDate" So if I run this in AutoIT, I should get the value displayed within the msgbox: MsgBox($MB_SYSTEMMODAL, "InstallDate Test", RegRead("HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion", "InstallDate")) However, what happens is it always returns a value of "0" I tried this on several machines (Windows 8, Windows 8.1 and Windows 10). Am I missing something? If I manually view this REG_DWORD with RegEdit, it shows me the HEX value, or I can view the Decimal value. I don't care which value AutoIT reads, as I can always convert back and forth, but I just don't see why it can't read a value from this REG_DWORD. As a test, I've read other REG_DWORD values, and with most it doesn't return any value, not even a 0. Please, even if you guys have some other (perhaps better) way to read the Windows install date, I would still like to find a resolution to this problem, because I want to understand why I am having so much difficulty with reading REG_DWORD values from the Windows Registry with AutoIT. Thanks for any help!
Hi, I wondered why negative integers I wrote into registry (e.g. negative x-coordinates of a gui if using two monitors and the right one is the main one) wouldn't return right when reading. Now I know: it is saved as an unsigned integer (without algebraic sign). So here is a snippet that is changing unsigned to signed integer: Global Const $g_sRegKey = "HKEY_CURRENT_USER\Software\" & @ScriptName ; path to registry RegWrite($g_sRegKey, "Value", "REG_DWORD", -2147483647) ; write some negative integer into registry; -2147483647 highest possible negative integer , 2147483648 highest possible positive integer if talking of 32bit Local $sValue = RegRead($g_sRegKey, "Value") ; read out registry ConsoleWrite("Value: " & $sValue & @CRLF) ; show real value in console Local $sResult = _SignedInteger($sValue) ; change to signed value ConsoleWrite("Result: " & $sResult & @CRLF) ; and show it in console Func _SignedInteger($iUnsignedInteger) Local $iSignedInteger If $iUnsignedInteger > (2^31) Then ; then it means a negative integer $iSignedInteger = $iUnsignedInteger - (2^32) Else $iSignedInteger = $iUnsignedInteger EndIf Return $iSignedInteger EndFunc It took me some time to find out the problem and so I hope I can help somebody with this. Regards, Conrad