Symbian3/PDK/Source/GUID-9E6822BE-BDF0-5710-9E60-A8DB14622C55.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 11:56:28 +0100
changeset 5 f345bda72bc4
parent 3 46218c8b8afa
child 14 578be2adaf3e
permissions -rw-r--r--
Week 12 contribution of PDK documentation_content. See release notes for details. Fixes Bug 2054, Bug 1583, Bug 381, Bug 390, Bug 463, Bug 1897, Bug 344, Bug 1319, Bug 394, Bug 1520, Bug 1522, Bug 1892"

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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>