Dynamsoft TWAIN Products

Is there a chain of calls that can extract the bytes of a scaled version of an image in the buffer in a specified format without changing the image in the buffer?

Based on the fact that GetSelectedImageSize(format) seems to have a side-effect of changing the internal format mode of the plugin in preparation for SaveSelectedImagesToBytes(), I am hopeful that GetImageSize() also prepares a resized version of the image, available for extraction. I'm just not sure of this, or what other methods are required. Can you provide some direction here?

Thanks,

Jason

Hi Jason,

Currently, GetImageSize() cannot be used together with SaveSelectedImagesToBytes(). I will add your feature request to our issue tracking system for future consideration.

So I realize the clearer way to describe what I want - a Thumbnail.

• Is there a way to extract a scaled version without affecting the original?
• Is there a to scale the image, extract it, and then a method to revert it to the original?
• Is there a way to duplicate an image in the buffer WITHOUT transferring to/from the clipboard?

Hi Jason,

For your questions:

1. You can copy the original image either to the same control or to another control, scale the image and then extract the scaled version.
2. Yes. Please see item 1.
3. Yes. You can use the SaveSelectedImagesToBytes method to save the image, and then call LoadImageFromBytes to load the same image to the buffer.