Twain-Support - Which XnView-version is to be taken?

[BimBam]

Hello.

I'm usinng "XnView MP v1.11.7 64bit" together with the programm "Vuescan 9.8". The Twain-option in "XnView MP" is empty althought my
now 20 year old Canon-scanner is working fine with "Vuescan". According to AI the reason for this issue is that 64Bit doesn't support Twain.
And now I'm confudes: Which version of "XnView" is the best to be taken if i want to use it together with "Vuescan":

XnViewMP-win-x64.exe (v1.11.7)
XnView_MP-1.5.5-win.exe
XnView-win-full.exe (2.52.5)

I’m grateful for any advice.

Cheers,
Bimbam

[xnview]

XnViewMP-win-x64.exe (v1.11.7)

it's the good one, Twain plugin is 32bits

[cday]

According to AI the reason for this issue is that 64Bit doesn't support Twain.

TWAIN 64-bit support was added to XnView MP maybe as much as ten years ago, after many requests over an extended period, by means of a 64-bit to 32-bit interface that Pierre created...

As I'm now a Linux user in which scanning normally uses a SANE interface, I can't look for the Windows TWAIN interface, but as this is the second recent similar post maybe someone could link to that thread, I think at present unanswered.

[BimBam]

XnViewMP-win-x64.exe (v1.11.7)

it's the good one, Twain plugin is 32bits

This is what I see here:

Twain-Source Empty.png

So I played around with Powershell to find out about TWAIN on my system:

Code: Select all

Powershell and Twain

****************************************************************************************************
PS C:\WINDOWS\system32> $paths = @(
    'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\TWAIN',
    'HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\TWAIN',
    'HKCU:\Software\Microsoft\Windows NT\CurrentVersion\TWAIN'
)

foreach ($path in $paths) {
    if (Test-Path $path) {
        Write-Host "`n$path" -ForegroundColor Cyan
        Get-ChildItem $path | Select-Object -ExpandProperty PSChildName
    }
}


PS C:\WINDOWS\system32> 

****************************************************************************************************

PS C:\WINDOWS\system32> Get-PnpDevice -PresentOnly |
    Where-Object {
        $_.FriendlyName -match 'Scanner|Scan|WIA|TWAIN'
    } |
    Format-Table Status, Class, FriendlyName, InstanceId -AutoSize


PS C:\WINDOWS\system32> 

****************************************************************************************************

PS C:\WINDOWS\system32> Get-WindowsDriver -Online |
    Where-Object {
        $_.ClassName -match 'Image|Scanner' -or
        $_.OriginalFileName -match 'twain|scan|wia'
    } |
    Format-Table Driver, OriginalFileName, ProviderName, ClassName, Version -AutoSize


Driver    OriginalFileName                                                                                ProviderName     ClassName Version  
------    ----------------                                                                                ------------     --------- -------  
oem20.inf C:\Windows\System32\DriverStore\FileRepository\scadrv60.inf_amd64_583d319f19379e4d\scadrv60.inf Hamrick Software Image     1.0.0.174

To me it looks like there is only a driver being installed from "Vuescan", but no real TWAIN-device.
And therefore I can't see a TWAIN-scanner in XnView, , right?