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Docs: LCL/dbctrls. Updates TDBMemo.LoadMemo topic for changes in 1b18f093.

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* It references Issue #33598 - which I cannot locate by issue number.
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dsiders 2024-06-15 21:56:02 +01:00
parent 700ad868db
commit a10a426ac7
1 changed files with 24 additions and 6 deletions
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docs/xml/lcl/dbctrls.xml
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@ -7094,6 +7094,7 @@ key code is handled, and when the focus is changed to another control.
<link id="#lcl.controls.TControl.OnEditingDone">TControl.OnEditingDone</link>
</seealso>
</element>
<element name="TDBMemo.LoadMemo">
<short>
Loads the lines of text for the memo from the field in the linked data set.
@ -7106,14 +7107,16 @@ the value for the memo has already been loaded, the field in the data link
has not been assigned, or the field does not use the TBlobField field type.
</p>
<p>
LoadMemo signals the <var>OnGetText</var> event handler (when assigned) in
the field data link to get the value that is stored in the <var>Lines</var>
property. If the event handler has not been assigned, the <var>AsString</var>
method in the linked data field is used to get the value for the control.
LoadMemo signals the <var>OnGetText</var> event handler (when assigned in
the field data link) to get the Text value for the blob field. If OnGetText has
not been assigned, the AsString value for the blob field is retrieved. The
retrieved value is stored to the Lines property when it differs from the
existing value in Lines.
</p>
<p>
If an <var>EInvalidOperation</var> exception occurs while getting the value
for the control, the exception message is stored in the Lines property.
for the control, the exception is caught and the message is stored in the Lines
property.
</p>
<p>
LoadMemo is called when the value in <var>AutoDisplay</var> is changed to
@ -7121,8 +7124,23 @@ LoadMemo is called when the value in <var>AutoDisplay</var> is changed to
<b>Enter</b> key is handled in the <var>KeyPress</var> method.
</p>
</descr>
<seealso/>
<version>
Modified in LCL version 3.6 to update Lines when the field value differs from
the existing value in Lines.
</version>
<seealso>
<link id="TDBMemo.AutoDisplay"/>
<link id="TDBMemo.DataChange"/>
<link id="TDBMemo.KeyPress"/>
<link id="TFieldDataLink"/>
<link id="#lcl.stdctrls.TCustomMemo.Lines"/>
<link id="#fcl.db.TBlobField.IsBlob">TBlobField.IsBlob</link>
<link id="#fcl.db.TField.OnGetText">TField.OnGetText</link>
<link id="#fcl.db.TField.Text">TField.Text</link>
<link id="#fcl.db.TField.AsString">TField.AsString</link>
</seealso>
</element>
<element name="TDBMemo.ExecuteAction">
<short>Provides support for TBasicAction in the control.</short>
<descr>