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535 lines
22 KiB
535 lines
22 KiB
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<body bgcolor=white lang=EN-US link=blue vlink=blue style='tab-interval:.5in'
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leftmargin=8>
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<div class=Section1>
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<h1><a name=MYSAMPLE>Sample WIA Scanner </a><span class=GramE><span
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style='mso-bookmark:MYSAMPLE'>Driver</span> :</span></h1>
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<h1>(<span class=GramE>flatbed</span> scanner with a document feeder attached) or</h1>
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<h1>(<span class=GramE>scanner</span> with a document feeder only that can not determine
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page length)</h1>
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<h1><span style='font-size:14.0pt;mso-bidi-font-size:24.0pt;color:red'>[This is
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preliminary documentation and subject to change.]<o:p></o:p></span></h1>
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<h2>SUMMARY</h2>
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<p>This sample shows how to write a Windows Image Acquisition (WIA) user-mode <span
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class=SpellE>minidriver</span> for a scanner. It simulates scanning by
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producing a test pattern image. This sample driver is an excellent starting
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point for your development, but your driver should access the scanner hardware
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through one of the kernel drivers provided with Windows, <span class=SpellE>Usbscan.sys</span>
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or <span class=SpellE>Scsiscan.sys</span>, if possible.</p>
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<p>This sample will not work on Windows 98 or Windows 2000.</p>
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<h3>SAMPLE FEATURES</h3>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>1.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Automatic
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document feeder capabilities</p>
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<p style='margin-left:1.0in;text-indent:-.25in;mso-list:l1 level2 lfo2;
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tab-stops:list 1.0in'><![if !supportLists]><span style='mso-list:Ignore'>a.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>This
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sample also shows an example of a feeder that can not determine the page
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length. (formally called a <span class=SpellE>scrollfed</span> scanner)</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>2.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Scan,
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Copy, and Fax button support. (interrupt events only)</p>
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<p style='margin-left:1.0in;text-indent:-.25in;mso-list:l1 level2 lfo2;
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tab-stops:list 1.0in'><![if !supportLists]><span style='mso-list:Ignore'>a.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Run
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the small application provided with the DDK called <b style='mso-bidi-font-weight:
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normal'>scanpanl.exe</b> to simulate button presses.</p>
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<h3>BUILDING THE SAMPLE (flatbed scanner with document feeder attached)</h3>
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<p>To build the <span class=GramE>sample follow</span> these steps:</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo4;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>1.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>In
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the Start menu, <span class=GramE>select<span style='mso-spacerun:yes'>
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</span>"</span>Free Build Environment" or "Checked Build
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Environment" under "Windows DDK" to open a command window and
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set basic environment variables needed to build drivers. </p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo4;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>2.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Change
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to the directory containing the sample driver source code.</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo4;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>3.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Execute
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the "build" command. After the build completes, a driver named wiascanr.dll
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will be located in a subdirectory.</p>
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<h3>BUILDING THE SAMPLE (document feeder only scanner that can not determine
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page length (formally called a <span class=SpellE>scrollfed</span> scanner))</h3>
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<p>To build the <span class=GramE>sample follow</span> these steps:</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l3 level1 lfo10;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>1.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>In
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the Start menu, <span class=GramE>select<span style='mso-spacerun:yes'>
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</span>"</span>Free Build Environment" or "Checked Build
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Environment" under "Windows DDK" to open a command window and
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set basic environment variables needed to build drivers. </p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l3 level1 lfo10;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>2.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Change
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to the directory containing the sample driver source code.</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l3 level1 lfo10;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>3.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Edit
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the <b style='mso-bidi-font-weight:normal'>SOURCES</b> file adding <b
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style='mso-bidi-font-weight:normal'>/DUNKNOWN_LENGTH_FEEDER_ONLY_SCANNER</b> to
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the <b style='mso-bidi-font-weight:normal'>C_DEFINES</b> section.</p>
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<p style='margin-left:1.0in;text-indent:-.25in;mso-list:l3 level2 lfo10;
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tab-stops:list 1.0in'><![if !supportLists]><span style='mso-list:Ignore'>a.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Example:
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<b style='mso-bidi-font-weight:normal'><span style='font-size:10.0pt'>C_DEFINES<span
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style='mso-spacerun:yes'> </span>=$(C_DEFINES) /DUNKNOWN_LENGTH_FEEDER_ONLY_SCANNER</span></b></p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l3 level1 lfo10;
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tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>4.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Execute
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the "build" command. After the build completes, a driver named wiascanr.dll
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will be located in a subdirectory. </p>
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<p style='margin-left:1.0in;text-indent:-.25in;mso-list:l3 level2 lfo10;
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tab-stops:list 1.0in'><![if !supportLists]><span style='mso-list:Ignore'>a.<span
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style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span
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style='color:red'>Important note:</span> This driver is the same .<span
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class=SpellE>dll</span> as the one built above.<span
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style='mso-spacerun:yes'> </span>It only contains different
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functionality. A separate installation is not required or recommended.</p>
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<h3>USING THE SAMPLE<o:p></o:p></h3>
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<p><! ---------------- Snip Snip ---------------- >To use the driver, first
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install it following these steps: </p>
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<ol start=1 type=1>
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<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
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mso-list:l4 level1 lfo7;tab-stops:list .5in'>Copy wiascanr.dll from the
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appropriate object subdirectory under <span class=SpellE>wiascanr</span>
|
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to a new, empty directory.</li>
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<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
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mso-list:l4 level1 lfo7;tab-stops:list .5in'>Copy <span class=SpellE><span
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class=GramE>wiascanr.inf</span></span><span class=GramE><span
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style='mso-spacerun:yes'> </span>to</span> the same directory.</li>
|
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<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
|
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mso-list:l4 level1 lfo7;tab-stops:list .5in'>In Windows Me or Windows XP,
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|
open the “New Device” icon located in the Scanners and Cameras
|
|
control panel.</li>
|
|
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
|
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mso-list:l4 level1 lfo7;tab-stops:list .5in'>Click the “Have
|
|
Disk” button and enter the name of the folder created in step 1.</li>
|
|
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
|
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mso-list:l4 level1 lfo7;tab-stops:list .5in'>Click OK, Next, or Finish
|
|
until the wizard is finished.</li>
|
|
</ol>
|
|
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|
<p>Use one of these options to test this driver:</p>
|
|
|
|
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l2 level1 lfo9;
|
|
tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>1.<span
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|
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>The
|
|
Scanners and Cameras Wizard accessible from the Start menu or by
|
|
double-clicking the scanner in Explorer.</p>
|
|
|
|
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l2 level1 lfo9;
|
|
tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>2.<span
|
|
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>The
|
|
<span class=SpellE>wiatest</span> application provided in this DDK tools
|
|
directory.</p>
|
|
|
|
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l2 level1 lfo9;
|
|
tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>3.<span
|
|
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Microsoft
|
|
Paint, a native WIA application.</p>
|
|
|
|
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l2 level1 lfo9;
|
|
tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>4.<span
|
|
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Any
|
|
TWAIN compliant application.</p>
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|
|
|
<h3>RESOURCES</h3>
|
|
|
|
<p>WIA information: <a href="http://www.microsoft.com/hwdev/tech/wia">http://www.microsoft.com/hwdev/tech/wia</a></p>
|
|
|
|
<p>DDK information: <a href="http://www.microsoft.com/ddk/">http://www.microsoft.com/ddk/</a></p>
|
|
|
|
<h3>CODE TOUR</h3>
|
|
|
|
<h3>File Manifest</h3>
|
|
|
|
<pre>Files<span style='mso-spacerun:yes'> </span>Description</pre><pre>------------ -------------------------------------------------------</pre><pre><span
|
|
class=SpellE><span class=GramE>istiusd.cpp</span></span><span style='mso-spacerun:yes'> </span>Implements STI <span
|
|
class=SpellE>minidriver</span> for backward compatibility</pre><pre><span
|
|
class=SpellE><span class=GramE>iwiaminidrv.cpp</span></span> Implements COM WIA mini-driver functions</pre><pre><span
|
|
class=SpellE><span class=GramE>makefile</span></span><span style='mso-spacerun:yes'> </span>Used for building the driver--do not modify</pre><pre><span
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|
class=SpellE><span class=GramE>pch.h</span></span><span style='mso-spacerun:yes'> </span>Precompiled header</pre><pre><span
|
|
class=SpellE><span class=GramE>resource.h</span></span><span style='mso-spacerun:yes'> </span>Header file for resources</pre><pre><span
|
|
class=GramE>sources</span><span style='mso-spacerun:yes'> </span>Controls building of driver</pre><pre><span
|
|
class=SpellE><span class=GramE>validate.cpp</span></span><span style='mso-spacerun:yes'> </span>Implements property validation helpers</pre><pre><span
|
|
class=SpellE><span class=GramE>wiaprop.h</span></span><span style='mso-spacerun:yes'> </span>Property header file</pre><pre><span
|
|
class=SpellE><span class=GramE>wiascanr.cpp</span></span><span style='mso-spacerun:yes'> </span>Implements COM DLL functionality</pre><pre><span
|
|
class=SpellE><span class=GramE>wiascanr.h</span></span><span style='mso-spacerun:yes'> </span>Main DLL header file</pre><pre><span
|
|
class=SpellE><span class=GramE>wiascanr.rc</span></span><span style='mso-spacerun:yes'> </span>Resource definitions</pre><pre><span
|
|
class=SpellE><span class=GramE>wiascanr.rcv</span></span><span style='mso-spacerun:yes'> </span>Version resource definitions</pre><pre><span
|
|
class=SpellE><span class=GramE>wiascanr.def</span></span><span style='mso-spacerun:yes'> </span>DLL exports file</pre><pre><span
|
|
class=SpellE><span class=GramE>dlihook.cpp</span></span><span style='mso-spacerun:yes'> </span>delay load module</pre><pre><span
|
|
class=GramE>wiascanr.htm</span><span style='mso-spacerun:yes'> </span>This <span
|
|
class=SpellE>readme</span> file</pre><pre><span class=SpellE><span class=GramE>wiascanr.inf</span></span><span style='mso-spacerun:yes'> </span>Installation file for this driver</pre></div>
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