255 lines
11 KiB
HTML
255 lines
11 KiB
HTML
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<title>Wiatscan</title>
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<o:Author>Dave Parsons</o:Author>
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<o:LastAuthor>Dave Parsons</o:LastAuthor>
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<o:Revision>4</o:Revision>
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<o:TotalTime>310</o:TotalTime>
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<o:Created>1999-11-18T21:29:00Z</o:Created>
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<o:Company>Microsoft Corp.</o:Company>
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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 Driver</a></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
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minidriver for a scanner. It simulates scanning by reading image information
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from 3 specific bitmaps files which are automatically copied to your system
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directory when the driver is installed. This sample driver is an excellent
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starting point for your development, but your driver should access the scanner
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hardware through one of the kernel drivers provided with Windows, Usbscan.sys
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or Scsiscan.sys, if possible.</p>
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<p>At the time of this writing, WIA is only supported on Windows Me and
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Whistler. This sample will not work on Windows 98 or Windows 2000.</p>
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<h3>BUILDING THE SAMPLE</h3>
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<p>To build the sample follow these steps:</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
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tab-stops:list .5in'><![if !supportLists]>1.<span style='font:7.0pt "Times New Roman"'>
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</span><![endif]>In the Start menu, select<span style="mso-spacerun:
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yes"> </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 lfo2;
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tab-stops:list .5in'><![if !supportLists]>2.<span style='font:7.0pt "Times New Roman"'>
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</span><![endif]>Change to the directory containing the sample driver source
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code, src\preview\wdm\wia\wiatscan.</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
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tab-stops:list .5in'><![if !supportLists]>3.<span style='font:7.0pt "Times New Roman"'>
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</span><![endif]>Execute the "build" command. After the build
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completes, a driver named Wiatscan.dll will be located in a subdirectory.</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:l2 level1 lfo5;tab-stops:list .5in'>Copy Wiatscan.dll from the
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appropriate object subdirectory under Wiatscan 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:l2 level1 lfo5;tab-stops:list .5in'>Copy Wiatscan.inf and all of
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the *.bmp files located in the Wiatscan directory to 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:l2 level1 lfo5;tab-stops:list .5in'>In Windows Me or Whistler,
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open the “New Device” icon located in the Scanners and Cameras control
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panel.</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:l2 level1 lfo5;tab-stops:list .5in'>Click the “Have Disk” button
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and enter the name of the folder created in step 1.</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:l2 level1 lfo5;tab-stops:list .5in'>Click OK, Next, or Finish
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until the wizard is finished.</li>
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</ol>
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<p>Use one of these options to test this driver:</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo7;
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tab-stops:list .5in'><![if !supportLists]>1.<span style='font:7.0pt "Times New Roman"'>
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</span><![endif]>The Scanners and Cameras Wizard accessible from the Start menu
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or by double-clicking the scanner in Explorer.</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo7;
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tab-stops:list .5in'><![if !supportLists]>2.<span style='font:7.0pt "Times New Roman"'>
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</span><![endif]>The Wiatest application provided in this DDK tools directory.</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo7;
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tab-stops:list .5in'><![if !supportLists]>3.<span style='font:7.0pt "Times New Roman"'>
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</span><![endif]>Microsoft Paint, a native WIA application.</p>
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<p style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo7;
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tab-stops:list .5in'><![if !supportLists]>4.<span style='font:7.0pt "Times New Roman"'>
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</span><![endif]>Any TWAIN compliant application.</p>
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<h3>RESOURCES</h3>
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<p>WIA information: <a href="http://www.microsoft.com/hwdev/wia">http://www.microsoft.com/hwdev/wia</a></p>
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<p>DDK information: <a href="http://www.microsoft.com/ddk/">http://www.microsoft.com/ddk/</a></p>
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<h3>CODE TOUR</h3>
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<h3>File Manifest</h3>
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<pre>Files<span style="mso-spacerun: yes"> </span>Description</pre><pre>------------ -------------------------------------------------------</pre><pre>defprop.h<span style="mso-spacerun: yes"> </span>Property header file</pre><pre>device.cpp<span style="mso-spacerun: yes"> </span>Implements STI minidriver for backward compatibility</pre><pre>makefile<span style="mso-spacerun: yes"> </span>Used for building the driver--do not modify</pre><pre>minidrv.cpp<span style="mso-spacerun: yes"> </span>Implements scanner functions</pre><pre>resource.h<span style="mso-spacerun: yes"> </span>Header file for resources</pre><pre>sources<span style="mso-spacerun: yes"> </span>Controls building of driver</pre><pre>test1bt.bmp<span style="mso-spacerun: yes"> </span>1 bit deep sample image</pre><pre>test8bt.bmp<span style="mso-spacerun: yes"> </span>8 bit deep sample image</pre><pre>test24bt.bmp 24 bit deep sample image</pre><pre>testusd.cpp<span style="mso-spacerun: yes"> </span>Implements COM functionality</pre><pre>testusd.h<span style="mso-spacerun: yes"> </span>Main header file</pre><pre>testusd.rc<span style="mso-spacerun: yes"> </span>Resource definitions</pre><pre>testusd.rcv<span style="mso-spacerun: yes"> </span>Version resource definitions</pre><pre>validate.cpp Implements property handling</pre><pre>wiatscan.def Linker command file</pre><pre>wiatscan.htm This readme file</pre><pre>wiatscan.inf Installation file for this driver</pre>
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<h3 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'>Programming
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Tour</h3>
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<p style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'>Will
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be added in a future revision.<span style='font-family:"Courier New"'><o:p></o:p></span></p>
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</div>
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