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<b><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - FILESAVE Slide numbers are lost when saving as PPTX"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=117339#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - FILESAVE Slide numbers are lost when saving as PPTX"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=117339">bug 117339</a>
from <span class="vcard"><a class="email" href="mailto:c3f38p+e9pr063ckikkw@guerrillamailblock.com" title="c3f38p+e9pr063ckikkw@guerrillamailblock.com">c3f38p+e9pr063ckikkw@guerrillamailblock.com</a>
</span></b>
<pre>It seems noteworthy that there is a field with type "slidenum" in
ppt/slideMasters/slideMaster1.xml but no (corresponding) entry in
ppt/slide1.xml.
The "solution" in
<a href="https://stackoverflow.com/questions/36190387/how-can-i-add-slide-numbers-to-a-powerpoint-presentation-using-open-xml-net-sdk">https://stackoverflow.com/questions/36190387/how-can-i-add-slide-numbers-to-a-powerpoint-presentation-using-open-xml-net-sdk</a>
indicates there ought to be such a field.
Indeed, adding
<p:sp>
<p:nvSpPr>
<p:cNvPr id="127" name="CustomShape 4"/>
<p:cNvSpPr/>
<p:nvPr>
<p:ph type="sldNum"/>
</p:nvPr>
</p:nvSpPr>
<p:spPr>
<a:xfrm>
<a:off x="8741520" y="6247440"/>
<a:ext cx="2840400" cy="472680"/>
</a:xfrm>
<a:prstGeom prst="rect">
<a:avLst/>
</a:prstGeom>
</p:spPr>
<p:txBody>
<a:bodyPr lIns="0" rIns="0" tIns="0" bIns="0"/>
<a:p>
<a:pPr algn="r"/>
<a:fld id="{BE8C60C3-C7BB-4A63-A38B-623C61B19D0D}" type="slidenum">
<a:rPr b="0" lang="en-US" sz="1400" spc="-1" strike="noStrike">
<a:solidFill>
<a:srgbClr val="006699"/>
</a:solidFill>
<a:latin typeface="Arial"/>
<a:ea typeface="Arial"/>
</a:rPr>
<a:t><number></a:t>
</a:fld>
<a:endParaRPr b="0" lang="en-US" sz="1400" spc="-1"
strike="noStrike">
<a:solidFill>
<a:srgbClr val="006699"/>
</a:solidFill>
<a:latin typeface="Arial"/>
<a:ea typeface="Arial"/>
</a:endParaRPr>
</a:p>
</p:txBody>
</p:sp>
just before </p:spTree> seems to create a slide number which does not vanish on
saving / reopening.</pre>
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