📄 showimage.srf
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{{ handler ShowImage.dll/Default }}
<html>
<!-- (c) 2000 Microsoft Corporation -->
<head>
<title>{{Title}}</title>
<meta http-equiv="content-type" content="text/html; charset=iso8859-1">
<link rel="stylesheet" href="normal.css" type="text/css">
</head>
<body>
<h1>{{Title}}</h1>
<h2>These files were sent to the server:</h2>
{{TableHeader}}
{{ShowFiles}}
{{TableFooter}}
{{ShowImage}}
<h3>Instructions</h3>
<p>
Use <a href="form.srf">this form</a> to send some image files to this page.
The server will attempt to convert the files to PNG format and add the image data
to a database. The response will indicate which files were received by the server,
which files were images, which could be converted to PNG format, and which of those
could be added to the database. Any images added to the database will be displayed
as part of the page.
</p>
<h3>How It Works</h3>
<p>
The server loops through the files sent to the server and loads each of them into a CImage object.
If the file could be loaded successfully, the server generates a temporary file name and tries
to save the image to that file name in PNG format. If that is successful, the server loads the file
into an object that exposes the data via the IWriteStream interface and hooks that up to an OLE DB
accessor. The server then calls a stored procedure using that accessor to add the image to the database
along with information such as its width, height, and bits per pixel. Each image added to the database
causes an IMG element to be added to the response.
</p>
<p>
The SRC attribute of the IMG is a URL to this page.
The presence of a query string indicates that the server should send back image data retrieved
from the database rather than an HTML page. In this example, the query string just contains the ID of the
database record holding the image. This ID is used as a parameter to a stored procedure that returns the
image data which is then written to the client.
</p>
</body>
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