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error in _WinAPI_EnumDisplayDevices sample

Javik

By Javik,
in AutoIt General Help and Support

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Javik Wayfarer

Javik

Posted
Posted

Apparently there is a bug in the sample script for _WinAPI_EnumDisplayDevices. This happened with my older install and with the latest version

There's an exitloop that doesn't work. It enumerates about four devices then just loops forever displaying nothing.

I don't know the solution for this. I'm using Windows 7 64-bit, UAC is turned on (default)

Original sample code in help:

#include <WinAPI.au3>
_Main()

Func _Main()
Local $aDevice, $i = 0, $text
While 1
$aDevice = _WinAPI_EnumDisplayDevices("", $i)
If Not $aDevice[0] Then ExitLoop
$text = "Successful? " & $aDevice[0] & @LF
$text &= "Device (Adapter or Monitor): " & $aDevice[1] & @LF
$text &= "Description (Adapter or Monitor): " & $aDevice[2] & @LF
$text &= "Device State Flag: " & $aDevice[3] & @LF
If BitAND($aDevice[3], 32) Then $text &= @TAB & "- The device has more display modes than its output devices support" & @LF

If BitAND($aDevice[3], 16) Then $text &= @TAB & "- The device is removable; it cannot be the primary display" & @LF
If BitAND($aDevice[3], 8) Then $text &= @TAB & "- The device is VGA compatible" & @LF
If BitAND($aDevice[3], 4) Then $text &= @TAB & "- Represents a pseudo device used to mirror application drawing for remoting" & @LF
If BitAND($aDevice[3], 2) Then $text &= @TAB & "- The primary desktop is on the device" & @LF
If BitAND($aDevice[3], 1) Then $text &= @TAB & "- The device is part of the desktop" & @LF

$text &= "Plug and Play identifier string: " & $aDevice[4] & @LF
MsgBox(0, "", $text)
$i += 1
WEnd
EndFunc ;==>_Main
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KaFu Universalist

KaFu

Posted
Posted

You are right, imho these lines in _WinAPI_EnumDisplayDevices

DllCall("user32.dll", "bool", "EnumDisplayDevicesW", "struct*", $tName, "dword", $iDevNum, "struct*", $tDevice, "dword", 1)
 If @error Then Return SetError(@error, @extended, 0)

should be more something like this

Local $iRet = DllCall("user32.dll", "bool", "EnumDisplayDevicesW", "struct*", $tName, "dword", $iDevNum, "struct*", $tDevice, "dword", 1)
 If @error or $iRet[0] = 0 Then Return SetError(@error, @extended, $aDevice)

de.png OS: Win10-22H2 - 64bit - German, AutoIt Version: 3.3.16.1, AutoIt Editor: SciTE, Website: https://funk.eu
prog_icon_amt.png AMT - Auto-Movie-Thumbnailer (2022-Nov-26) prog_icon_bic.png BIC - Batch-Image-Cropper (2023-Apr-01) prog_icon_cop.png COP - Color Picker (2009-May-21)
prog_icon_dcs.png DCS - Dynamic Cursor Selector (2024-Feb-16) prog_icon_hmw.png HMW - Hide my Windows (2018-Sep-16) prog_icon_hrc.png HRC - HotKey Resolution Changer (2012-May-16) 
prog_icon_icu.png ICU - Icon Configuration Utility (2018-Sep-16) prog_icon_smf.png SMF - Search my Files (2023-Jun-03) - THE file info and duplicates search tool prog_icon_ssd.png SSD - Set Sound Device (2017-Sep-16)

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guinness Universalist

guinness

Posted
Posted

Thanks KaFu. I fixed/closed the Trac ticket.

UDF List:

 
_AdapterConnections() • _AlwaysRun() • _AppMon() • _AppMonEx() • _ArrayFilter/_ArrayReduce • _BinaryBin() • _CheckMsgBox() • _CmdLineRaw() • _ContextMenu() • _ConvertLHWebColor()/_ConvertSHWebColor() • _DesktopDimensions() • _DisplayPassword() • _DotNet_Load()/_DotNet_Unload() • _Fibonacci() • _FileCompare() • _FileCompareContents() • _FileNameByHandle() • _FilePrefix/SRE() • _FindInFile() • _GetBackgroundColor()/_SetBackgroundColor() • _GetConrolID() • _GetCtrlClass() • _GetDirectoryFormat() • _GetDriveMediaType() • _GetFilename()/_GetFilenameExt() • _GetHardwareID() • _GetIP() • _GetIP_Country() • _GetOSLanguage() • _GetSavedSource() • _GetStringSize() • _GetSystemPaths() • _GetURLImage() • _GIFImage() • _GoogleWeather() • _GUICtrlCreateGroup() • _GUICtrlListBox_CreateArray() • _GUICtrlListView_CreateArray() • _GUICtrlListView_SaveCSV() • _GUICtrlListView_SaveHTML() • _GUICtrlListView_SaveTxt() • _GUICtrlListView_SaveXML() • _GUICtrlMenu_Recent() • _GUICtrlMenu_SetItemImage() • _GUICtrlTreeView_CreateArray() • _GUIDisable() • _GUIImageList_SetIconFromHandle() • _GUIRegisterMsg() • _GUISetIcon() • _Icon_Clear()/_Icon_Set() • _IdleTime() • _InetGet() • _InetGetGUI() • _InetGetProgress() • _IPDetails() • _IsFileOlder() • _IsGUID() • _IsHex() • _IsPalindrome() • _IsRegKey() • _IsStringRegExp() • _IsSystemDrive() • _IsUPX() • _IsValidType() • _IsWebColor() • _Language() • _Log() • _MicrosoftInternetConnectivity() • _MSDNDataType() • _PathFull/GetRelative/Split() • _PathSplitEx() • _PrintFromArray() • _ProgressSetMarquee() • _ReDim() • _RockPaperScissors()/_RockPaperScissorsLizardSpock() • _ScrollingCredits • _SelfDelete() • _SelfRename() • _SelfUpdate() • _SendTo() • _ShellAll() • _ShellFile() • _ShellFolder() • _SingletonHWID() • _SingletonPID() • _Startup() • _StringCompact() • _StringIsValid() • _StringRegExpMetaCharacters() • _StringReplaceWholeWord() • _StringStripChars() • _Temperature() • _TrialPeriod() • _UKToUSDate()/_USToUKDate() • _WinAPI_Create_CTL_CODE() • _WinAPI_CreateGUID() • _WMIDateStringToDate()/_DateToWMIDateString() • Au3 script parsing • AutoIt Search • AutoIt3 Portable • AutoIt3WrapperToPragma • AutoItWinGetTitle()/AutoItWinSetTitle() • Coding • DirToHTML5 • FileInstallr • FileReadLastChars() • GeoIP database • GUI - Only Close Button • GUI Examples • GUICtrlDeleteImage() • GUICtrlGetBkColor() • GUICtrlGetStyle() • GUIEvents • GUIGetBkColor() • Int_Parse() & Int_TryParse() • IsISBN() • LockFile() • Mapping CtrlIDs • OOP in AutoIt • ParseHeadersToSciTE() • PasswordValid • PasteBin • Posts Per Day • PreExpand • Protect Globals • Queue() • Resource Update • ResourcesEx • SciTE Jump • Settings INI • SHELLHOOK • Shunting-Yard • Signature Creator • Stack() • Stopwatch() • StringAddLF()/StringStripLF() • StringEOLToCRLF() • VSCROLL • WM_COPYDATA • More Examples...

Updated: 22/04/2018

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guinness Universalist

guinness

Posted
Posted

Just apply the fix yourself to WinAPI.au3.

UDF List:

 
_AdapterConnections() • _AlwaysRun() • _AppMon() • _AppMonEx() • _ArrayFilter/_ArrayReduce • _BinaryBin() • _CheckMsgBox() • _CmdLineRaw() • _ContextMenu() • _ConvertLHWebColor()/_ConvertSHWebColor() • _DesktopDimensions() • _DisplayPassword() • _DotNet_Load()/_DotNet_Unload() • _Fibonacci() • _FileCompare() • _FileCompareContents() • _FileNameByHandle() • _FilePrefix/SRE() • _FindInFile() • _GetBackgroundColor()/_SetBackgroundColor() • _GetConrolID() • _GetCtrlClass() • _GetDirectoryFormat() • _GetDriveMediaType() • _GetFilename()/_GetFilenameExt() • _GetHardwareID() • _GetIP() • _GetIP_Country() • _GetOSLanguage() • _GetSavedSource() • _GetStringSize() • _GetSystemPaths() • _GetURLImage() • _GIFImage() • _GoogleWeather() • _GUICtrlCreateGroup() • _GUICtrlListBox_CreateArray() • _GUICtrlListView_CreateArray() • _GUICtrlListView_SaveCSV() • _GUICtrlListView_SaveHTML() • _GUICtrlListView_SaveTxt() • _GUICtrlListView_SaveXML() • _GUICtrlMenu_Recent() • _GUICtrlMenu_SetItemImage() • _GUICtrlTreeView_CreateArray() • _GUIDisable() • _GUIImageList_SetIconFromHandle() • _GUIRegisterMsg() • _GUISetIcon() • _Icon_Clear()/_Icon_Set() • _IdleTime() • _InetGet() • _InetGetGUI() • _InetGetProgress() • _IPDetails() • _IsFileOlder() • _IsGUID() • _IsHex() • _IsPalindrome() • _IsRegKey() • _IsStringRegExp() • _IsSystemDrive() • _IsUPX() • _IsValidType() • _IsWebColor() • _Language() • _Log() • _MicrosoftInternetConnectivity() • _MSDNDataType() • _PathFull/GetRelative/Split() • _PathSplitEx() • _PrintFromArray() • _ProgressSetMarquee() • _ReDim() • _RockPaperScissors()/_RockPaperScissorsLizardSpock() • _ScrollingCredits • _SelfDelete() • _SelfRename() • _SelfUpdate() • _SendTo() • _ShellAll() • _ShellFile() • _ShellFolder() • _SingletonHWID() • _SingletonPID() • _Startup() • _StringCompact() • _StringIsValid() • _StringRegExpMetaCharacters() • _StringReplaceWholeWord() • _StringStripChars() • _Temperature() • _TrialPeriod() • _UKToUSDate()/_USToUKDate() • _WinAPI_Create_CTL_CODE() • _WinAPI_CreateGUID() • _WMIDateStringToDate()/_DateToWMIDateString() • Au3 script parsing • AutoIt Search • AutoIt3 Portable • AutoIt3WrapperToPragma • AutoItWinGetTitle()/AutoItWinSetTitle() • Coding • DirToHTML5 • FileInstallr • FileReadLastChars() • GeoIP database • GUI - Only Close Button • GUI Examples • GUICtrlDeleteImage() • GUICtrlGetBkColor() • GUICtrlGetStyle() • GUIEvents • GUIGetBkColor() • Int_Parse() & Int_TryParse() • IsISBN() • LockFile() • Mapping CtrlIDs • OOP in AutoIt • ParseHeadersToSciTE() • PasswordValid • PasteBin • Posts Per Day • PreExpand • Protect Globals • Queue() • Resource Update • ResourcesEx • SciTE Jump • Settings INI • SHELLHOOK • Shunting-Yard • Signature Creator • Stack() • Stopwatch() • StringAddLF()/StringStripLF() • StringEOLToCRLF() • VSCROLL • WM_COPYDATA • More Examples...

Updated: 22/04/2018

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