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Firstly, since <span style="font-size: 12pt; color: rgb(31, 73,
125);">TCategoryDetails</span> is a descendant of <span
style="font-size: 12pt; color: rgb(31, 73, 125);">TCustomDetails</span>,
it should NEVER be referenced in a method of <span
style="font-size: 12pt; color: rgb(31, 73, 125);">TCustomDetails.</span><br>
Secondly, I would say the TCustomDetails object has already been
destroyed.<br>
<br>
Todd.<br>
<br>
<span style="font-size: 12pt; color: rgb(31, 73, 125);"></span>
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<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);">I’ve got a strange error occurring for
just one user where this procedure is failing...<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);">procedure
TCustomDetails.SetModified(Modify: Boolean);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);">begin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"> FModified := Modify;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"> if Modify then<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"> begin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"> if Self is TCategoryDetails then
MainForm.CategoryChanged := True<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"> else MainForm.SpotChanged := True;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"> end;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);">end;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);">TCategoryDetails and another class is
inherited from TCustomDetails.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal">Access violation at address 004047DC in
module 'SPLCreator.exe'. Read of address FFFFFFDF.<o:p></o:p></p>
<p class="MsoNormal">main thread ($87c):<o:p></o:p></p>
<p class="MsoNormal">004047dc SPLCreator.exe
System TObject.InheritsFrom<o:p></o:p></p>
<p class="MsoNormal">00404742 SPLCreator.exe
System @IsClass<o:p></o:p></p>
<p class="MsoNormal">005dc6a6 SPLCreator.exe SPMain 3831
+4 TCustomDetails.SetModified<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);">Would this happen if Self was nil or
invalid? I don’t see how that could happen but just
wondering how this can happen.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color:
rgb(31, 73, 125);">Ross.<o:p></o:p></span></p>
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