Wow David ! Thanks for the comprehensive reply.
To the OP: I hope David's reply answers your doubts.
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"David Candy" <.> wrote in message These applications can use the system-supplied user interface (UI), or one supplied by the device's
manufacturer. The UI is used to select items for transfer and to set relevant properties. Note that
it is the application, not the driver, that transfers the selected items after the UI is dismissed
An application writer has the following four choices for communicating with WIA devices:
a.. Use the WIA high-level interfaces, which are tied to the WIA common dialogs. This provides a
minimal-effort approach.
b.. Program directly to the WIA interfaces. This adds flexibility to implement custom solutions
and UI-less mode support for devices.
c.. Use the TWAIN compatibility layer, which exposes WIA devices as TWAIN devices. The
compatibility layer is limited to UI-mode only and single-image transfer.
d.. Support the common file open and file insert dialog. This dialog is not supported for
scanners, and it is only supported with video cameras after frames have been captured.
e.. Other imaging features associated with WIA include My Pictures Folder and My Pictures
Screensaver.
Supported Scanner Paper Sizes
Although two WIA user interface components are able to display a list of page sizes to the user,
there is no easy way for a WIA driver to know which page sizes a scanner supports.
Page Size in WIA Applications
There are no WIA properties that allow WIA drivers to report supported page sizes nor allow
applications to specify page size directly. To communicate page size settings to a driver, an
application must calculate the required size in dots per inch (DPI) and adjust the origin of the
scan to conform with the registration requirements of the device.
Page Size in the Common Scanner Dialog and in the Scanner and Camera Wizard
Both the Common Scanner Dialog and the Scanner and Camera Wizard have a static table of supported
page sizes in which each page size is described by its horizontal width and vertical height, both in
increments of 0.001 inch. These page sizes are currently displayed only when the scanner is in
document feeder mode.
The largest page size (by area) that a driver supports in page feed mode, as determined by the
maximum bed size, is considered the default page size. Paper sizes that do not fit on the feeder or
bed of the device are not offered to the user.
Or to make it's simple, Brother didn't want to write a driver. So didn't.
