Symbian3/PDK/Source/GUID-9E6822BE-BDF0-5710-9E60-A8DB14622C55.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 16:16:55 +0100
changeset 6 43e37759235e
parent 5 f345bda72bc4
child 14 578be2adaf3e
permissions -rw-r--r--
Week 12 contribution of example code"

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- Initial Contributors:
    Nokia Corporation - initial contribution.
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<!DOCTYPE concept
  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept xml:lang="en" id="GUID-9E6822BE-BDF0-5710-9E60-A8DB14622C55"><title>Storing a Picture Tutorial</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>This topic provides an example of storing a picture in a direct file store (including the creation of a picture header). </p> <codeblock id="GUID-82106C5C-1044-56C4-8E1F-7D4E9DA2A0C6" xml:space="preserve">_LIT(KFileName,"C:\\grpict.dat");
    
// Create (replace, if it exists) the direct file store
CDirectFileStore* store = CDirectFileStore::ReplaceLC(fsSession,KFileName,EFileWrite);
// Must say what kind of file store.
iStore-&gt;SetTypeL(KDirectFileStoreLayoutUid);
    
// Create picture header
TPictureHeader header;
header.iPicture = iPicture;
header.iSize = TSize(iPicture-&gt;SpecToFactor()*40,iPicture-&gt;SpecToFactor()*40);
header.iPictureType = KUidExampleSmileyPicture;
    
// Store picture header and picture
CStoreMap* map=CStoreMap::NewLC(*store);
TStreamId id = iPicture-&gt;StoreL(*store);
map-&gt;BindL(iPicture,id);
    
RStoreWriteStream stream(*map);
TStreamId headerId = stream.CreateLC(*store);
header.ExternalizeL(stream);
stream.CommitL();
map-&gt;Reset();
CleanupStack::PopAndDestroy(2); // stream, map
    
// Make header stream the root stream
store-&gt;SetRootL(headerId);
    
// Close store
CleanupStack::PopAndDestroy();</codeblock> <ol id="GUID-34C146E1-BFBD-531E-86DD-D0C87746FD91"><li id="GUID-1F00BB7A-C59D-5504-A531-C8081FC67714"><p>Create a direct file store into which to store the picture. </p> </li> <li id="GUID-81F80023-10A8-542C-9613-ED1FACF642CE"><p>Create a picture header object and set its attributes: <codeph>iPicture</codeph> is assumed to be picture object, derived from <codeph>CPicture</codeph>. </p> </li> <li id="GUID-AF878051-FF1D-52CD-AE28-28F8CCEE9366"><p>Store the picture header and picture in the file store. </p> </li> <li id="GUID-E5DDE3A1-E26F-5D63-BAF9-2C0D3F6B05DD"><p>Store the picture data and picture header using a store map as a temporary repository for the stream ID of the picture data stream. Store the stream ID as an element of the picture header's externalized stream to link the picture header’s stream and the picture data’s stream. </p> </li> </ol> </conbody><related-links><link href="GUID-520AC2F0-009E-51F3-A661-3B6E949F1423.dita"><linktext>Picture Tutorials</linktext> </link> <link href="GUID-5CEE36FC-C5A9-5C4E-9DBC-9C7B5B44EA2F.dita"><linktext>Picture Concepts</linktext> </link> </related-links></concept>