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ResNullius

Help with _WinApi_CreateFile() Function and RAW mode

11 posts in this topic

The latest Betas no longer support opening a file in RAW mode.

One of the neatest uses for this ability is to capture user input from the console in a CUI compiled script, by opening the console in raw mode, as per here:

http://www.autoitscript.com/forum/index.php?showtopic=79275&st=0&p=571658&#entry571658

Jon's reason for removal is here:

http://www.autoitscript.com/forum/index.php?showtopic=95366&view=findpost&p=761026

and I wouldn't want him adding back in code he wasn't happy with (or writing new code from scratch to support just one specialized feature).

The same functionality should be possible with _WinApi_CreateFile() function.

I've read the MSDN documentation on the function @ http://msdn.microsoft.com/en-us/library/aa363858%28VS.85%29.aspx

but I can't seem to get the parameters right... maybe I need _WinApi_ReadFile() too?

Looking for some assistance from the DllCall() gurus. And yes, I've read monoceres's tutorial on Dll calls, but that hasn't helped me in this instance.

Thanks

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#2 ·  Posted (edited)

I've done it ;) I've been pointing to Valiks example for ages but you never saw it.

#AutoIt3Wrapper_Change2CUI=y
#include <WinAPI.au3>

ConsoleWrite ("text: ")

Local $tBuffer = DllStructCreate("char")

Local $nRead, $sRet

Local $hFile = _WinAPI_CreateFile("CON", 2, 2)
While 1
    _WinAPI_ReadFile($hFile, DllStructGetPtr($tBuffer), 1, $nRead)
    If DllStructGetData ($tBuffer, 1) = @CR Then ExitLoop
    $sRet &= DllStructGetData ($tBuffer, 1)
WEnd
_WinAPI_CloseHandle($hFile)

MsgBox(4096, "", $sRet)

Dibs making udf :evil:

Mat

Edit: Programmer friendly:

#AutoIt3Wrapper_Change2CUI=y
#include <WinAPI.au3>

ConsoleWrite("text: ")
$sText = _ConsoleReadLine()
MsgBox(0, "Result", $sText)

Func _ConsoleReadLine()
    If Not @Compiled Then Return SetError(1, 0, 0) ; Not compiled

    Local $tBuffer = DllStructCreate("char"), $nRead, $sRet = ""
    Local $hFile = _WinAPI_CreateFile("CON", 2, 2)

    While 1
        _WinAPI_ReadFile($hFile, DllStructGetPtr($tBuffer), 1, $nRead)
        If DllStructGetData($tBuffer, 1) = @CR Then ExitLoop
        If $nRead > 0 Then $sRet &= DllStructGetData($tBuffer, 1)
    WEnd

    _WinAPI_CloseHandle($hFile)
    Return $sRet
EndFunc   ;==>_ConsoleReadLine
Edited by Mat

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I've done it ;) I've been pointing to Valiks example for ages but you never saw it.

Thank's Mat; that's what I wanted.

I did search forums (with built-in and Google) for _WinApi_CreateFile("con" but didn't find any direct results)

Do you have a link to Valik's example (I like to keep track of authors and seeds of origin where possible).

Also, slight mod of your function to make it "all-in-one", kinda like InputBox(): :evil:

;credits to Valik & Mat
#AutoIt3Wrapper_Change2CUI=y
#include <WinAPI.au3>

$sResponse = _ConsoleInput("Please input some text: ")
ConsoleWrite("You Entered: " & $sResponse & @CRLF)

Func _ConsoleInput($sPrompt)
    If Not @Compiled Then Return SetError(1, 0, 0) ; Not compiled

    ConsoleWrite($sPrompt)

    Local $tBuffer = DllStructCreate("char"), $nRead, $sRet = ""
    Local $hFile = _WinAPI_CreateFile("CON", 2, 2)

    While 1
        _WinAPI_ReadFile($hFile, DllStructGetPtr($tBuffer), 1, $nRead)
        If DllStructGetData($tBuffer, 1) = @CR Then ExitLoop
        If $nRead > 0 Then $sRet &= DllStructGetData($tBuffer, 1)
    WEnd

    _WinAPI_CloseHandle($hFile)
    Return $sRet
EndFunc
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http://www.autoitscript.com/forum/index.php?showtopic=107752&view=findpost&p=760049

Thats the link to Valiks original post.

Interestingly enough I was considering doing exactly the same thing, and calling it _ConsoleQuery...

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I've done it ;) I've been pointing to Valiks example for ages but you never saw it.

http://www.autoitscript.com/forum/index.php?showtopic=107752&view=findpost&p=760049

Thats the link to Valiks original post.

So Valik's original post was on the 5th of January, today's the 8th, and you've been pointing to his example for ages? :evil:

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So Valik's original post was on the 5th of January, today's the 8th, and you've been pointing to his example for ages? ;)

He pointed to it hours ago in the Latest Beta thread. That qualifies as "ages" in my book.

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Is there anyway to use this method and gather a single keystroke without the user having to hit the enter key.

I'm wanting to emulate the functionality of the choice.com program which does not work on a 64bit system.

With choice.com you can write to console a message and wait for a single key to be pressed and exit with that key as the error code. On 32 bit systems I'm able to use choice.com in a batch file to get a single keystroke from the user.

Has anyone seen an autoit3 script of that nature on this forum?

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Sorry for reviving so old thread, but does someone know why this piece of code doesn't work properly on Windows 8 / 8.1? You have to press ENTER twice and only second string is returned. The same compiled program run on Windows 7 works great.

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#10 ·  Posted (edited)

You have to turn off the ENABLE_LINE_INPUT in order for the console read functions to return immediately.

Example: 

#AutoIt3Wrapper_Change2CUI=n

#include <WinAPI.au3>
#include "Console.au3"

_Console_Alloc()

_WinAPI_SetLastError(0)
_Console_ReadOutputCharacter(-1, 1, 1, 1)
If _WinAPI_GetLastError() = 6 Then
    Run("""" & @AutoItExe & """ /AutoIt3ExecuteScript """ & @ScriptFullPath & """ " & $CmdLineRaw, @WorkingDir, @SW_SHOW, 0)
    Exit
EndIf

_Console_Write("Test: ")
$sText = _Console_ReadConsole(-1, False)
MsgBox(0, "Result", $sText)

Killgore, as mentioned in the pm, the above code will work for you too, just change _Console_ReadConsole(-1, False) to _Console_ReadConsole() to read the whole line.

Edit: It seems like this thread is getting hijacked a little. It's about time I just made a thread for console.au3 on it's own. Maybe renaming it to WinAPIConsole.au3 to avoid confusion with this thread. there are still a lot of things I don't understand and need fixing but most of the answers are there now.

Edited by Mat

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Hi-

In response to Kilgores question about having to enter twice with Windows 8, where do you turn off "ENABLE_LINE_INPUT"? I'm using the Valiks code example to read the input from the console and doing simple validation on the return.

#AutoIt3Wrapper_Change2CUI=y
#include <WinAPI.au3>
#include <StringConstants.au3>
#include <console.au3>

_GetServiceInfoCMD()

Func _ConsoleInput($sPrompt)
    If Not @Compiled Then Return SetError(1, 0, 0) ; Not compiled

    ConsoleWrite($sPrompt)

    Local $tBuffer = DllStructCreate("char"), $nRead, $sRet = ""
    Local $hFile = _WinAPI_CreateFile("CON", 2, 2)

    While 1
        _WinAPI_ReadFile($hFile, DllStructGetPtr($tBuffer), 1, $nRead)
        If DllStructGetData($tBuffer, 1) = @CR Then ExitLoop
        If $nRead > 0 Then $sRet &= DllStructGetData($tBuffer, 1)
    WEnd
    _WinAPI_CloseHandle($hFile)
    Return $sRet
EndFunc


Func _GetServiceInfoCMD()
    Local $sCustomerID = _ConsoleInput("Please enter your Customer ID: ")
    Local $iDcount = StringLen($sCustomerID)
    Local $iIsNumber = StringIsDigit($sCustomerID)
    While $iIsNumber <> 1
        ConsoleWrite( $sCustomerID & " is not a valid entry, numbers are only allowed." &  @CRLF)
        $sCustomerID = _ConsoleInput("Please enter again: ")
        $iIsNumber = StringIsDigit($sCustomerID)
        ConsoleWrite("IsNumber: " &  $iIsNumber & @CRLF)
    WEnd
    While $iDcount <> 7
        ConsoleWrite("Incorrect amount of numbers, only 7 are allowed." & @CRLF)
        $sCustomerID = _ConsoleInput("Please enter again: ")
        $iDcount = StringLen($sCustomerID)
        ConsoleWrite("Count: " &  $iDcount & @CRLF)
    WEnd
EndFunc
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