Hello,
It is possible that the confusion comes as the property WIA_DPS_SHOW_PREVIEW_CONTROL has been replaced by WIA_IPS_SHOW_PREVIEW_CONTROL
Reference:
WIA_DPS_SHOW_PREVIEW_CONTROL (Obsolete):
https://learn.microsoft.com/lb-lu/windows-hardware/drivers/image/wia-dps-show-preview-control
WIA_IPS_SHOW_PREVIEW_CONTROL (Current)
https://learn.microsoft.com/lb-lu/windows-hardware/drivers/image/wia-ips-show-preview-control
About the file split you can use the next property:
WIA_IPS_LONG_DOCUMENT
https://learn.microsoft.com/sr-cyrl-rs/windows-hardware/drivers/image/wia-ips-long-document
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