12 <concept id="GUID-B526BA3A-14E4-53B4-9382-437475A1C8A4" xml:lang="en"><title>Patchable Constants</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    12 <concept id="GUID-B526BA3A-14E4-53B4-9382-437475A1C8A4" xml:lang="en"><title>Patchable

    13 <p>From version 9.3 of Symbian OS, DLLs can export certain constants. These

    13 Constants</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 are referred to as patchable constants, and you can change their values when

    14 <p>From version 9.3 of Symbian OS, DLLs can export certain constants.

    15 the DLLs from which they are exported are incorporated into a ROM image. </p>

    15 These are referred to as patchable constants, and you can change their

    16 <p>This gives you the ability to create a variety of ROM images with constants

    16 values when the DLLs from which they are exported are incorporated

    17 of different values without the need to change any source code nor to rebuild

    17 into a ROM image. </p>

    18 the DLLs. </p>

    18 <p>This gives you the ability to create a variety of ROM images with

    19 <p>You change the value of a constant when you build your ROM image by adding

    19 constants of different values without the need to change any source

    20 the patchdata keyword into your <filepath>.oby</filepath> file. </p>

    20 code nor to rebuild the DLLs. </p>

    21 <p>See : <xref href="GUID-49397CFD-955A-5DF6-9251-368C44224966.dita">Build tools

    21 <p>You change the value of a constant when you build your ROM image

    22 reference</xref> and <xref href="GUID-7FF363B0-B05F-5490-8D9C-59061B905381.dita">How

    22 by adding the patchdata keyword into your <filepath>.oby</filepath> file. </p>

    23 to build ROMs with variants</xref>. </p>

    23 <p>See : Symbian^3 Tools Guide &gt; Building. </p>