add new faq

Author: lunaaaw

faq/use-wia-insteadof-wiatwain.md

@@ -0,0 +1,40 @@
+---
+layout: default-layout
+noTitleIndex: true
+needAutoGenerateSidebar: true
+title: How to use pure WIA source instead of WIATWAIN source from version 18.2?
+keywords: Dynamic Web TWAIN, Capture/ Image Source, WIA
+breadcrumbText: How to use pure WIA source instead of WIATWAIN source?
+description: How to use pure WIA source instead of WIATWAIN source?
+permalink: /faq/use-wia-insteadof-wiatwain.html
+---
+
+# Capture/Image Source
+
+## How to use pure WIA source instead of WIATWAIN source from version 18.2?
+
+As of Dynamic Web TWAIN version 18.2, we start to support WIA protocol officially. 
+
+### WIA 
+
+WIA stands for Windows Image Acquisition which is a Microsoft driver model for capturing digital images from various devices, such as scanners, cameras and other imaging devices. 
+
+Compared with TWAIN, the WIA protocol is built-in supported by Windows OS. No extra drivers needed for WIA-supported devices.
+
+WIA offers standardized hardware compatibility and a stable driver environment, making it easier to integrate imaging capabilities into the web scanning applications. 
+
+
+### Difference between `WIASCANNER` and `WIATWAINSCANNER`
+
+We add a new Enumaration `WIASCANNER` to [`Dynamsoft.DWT.EnumDWT_DeviceType`](https://www.dynamsoft.com/web-twain/docs/info/api/Dynamsoft_Enum.html?ver=latest&&cVer=true#dynamsoftdwtenumdwt_devicetype) to support WIA protocol. There is another Enumaration named `WIATWAINSCANNER` which is a WIA Source mapped through the TWAIN protocol after packaging by Microsoft and it was used to support WIA in the previous version.
+
+If you are using `WIATWAINSCANNER` before and would like to use `WIASCANNER` from version 18.2 instead, you need to modify the APIs used in your code accordingly.
+
+| `WIASCANNER` | `WIATWAINSCANNER`|
+|:-|:-|
+| [GetDeviceAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#getdevicesasync) | [GetSourceNames()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#getsourcenames), [GetSourceNamesAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#getsourcenamesasync)|
+| [SelectDeviceAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectdeviceasync) | [SelectSourceByIndex()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectsourcebyindex), [SelectSourceByIndexAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectsourcebyindexasync) |
+| [SelectSourceAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectsourceasync) | [SelectSource()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectsource) |
+| [AcquireImageAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#acquireimageasync) | [AcquireImage()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#acquireimage) |
+
+*`WIATWAINSCANNER` is still available.*

index.md

@@ -66,7 +66,7 @@ permalink: /index.html
 * [FAQs]({{site.faqs}}faq/index.html)
 
    - [SDK Download/Free Trial]({{site.faq}}#sdk-downloadfree-trial)
-   - [Capture/Image Source]({{site.indepth}}#captureimage-source)
+   - [Capture/Image Source]({{site.faq}}#captureimage-source)
    - [Image Viewer]({{site.faq}}#image-viewer)
    - [Image Editing]({{site.faq}}#image-editing)
    - [UI Customization]({{site.faq}}#ui-customization)