Retrieve supported scan type and document size from WIA

[karlie]

Hello,
How do I check if Color/Gray Scale/BW is supported by my WIA device? Also how do I retrieve the list of supported document sizes? Here is the code that I use for corresponding TWAIN devices, but I didn't find any equivalent WIA functions.
Regards,
Karlie

Code: Select all

int pixelTypeCount = this.gdPicImg.TwainGetAvailablePixelTypeCount();
for (int i = 1; i <= pixelTypeCount; i++)
{
  TwainPixelType pixelType = this.gdPicImg.TwainGetAvailablePixelTypeNo(i);
  this.pixelTypes.Add(new PixelSetting(pixelType));
}

Code: Select all

int documentSizeCount = this.gdPicImg.TwainGetAvailablePaperSizeCount();
for (int i = 1; i <= documentSizeCount; i++)
{
  TwainPaperSize size = this.gdPicImg.TwainGetAvailablePaperSizeNo(i);
  this.paperSizes.Add(new PaperSizeSetting(size));
}

[Loïc]

Hi Karlie,

How do I check if Color/Gray Scale/BW is supported by my WIA device?

See:
WiaGetAvailableImageIntentCount()
WiaGetAvailableImageIntentNo()

Also how do I retrieve the list of supported document sizes?

This is not yet supported. We will implement these 2 new functions in the next release:
- WiaGetAvailablePaperSizeCount()
- WiaGetAvailablePaperSizeNo()

Kind regards,

Loïc

[karlie]

Thank you for your prompt reply. Are the following methods available in the new 8.3 release?
- WiaGetAvailablePaperSizeCount()
- WiaGetAvailablePaperSizeNo()

[Normando]

Hello;

I download lastest version and WiaGetAvailablePaperSizeCount is missing.

Where are these functions?

Or

In WIA scanning how get available paper sizes from device?

Thanks

[Loïc]

Hello Normando,

Unfortunately we have not been able to push such function. There is nothing in WIA specs to retrieve such information.

You have to use physical size support to determine which normalized format is supported.

Kind regards,

Loïc