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Docs: LCL/dbgrids. Updates TCustomDBGrid, TComponentDataLink topics for changes in 87877c4f. Issue #41451.

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* TCustomDBGrid.EndLayout
* TComponentDataLink.DatasetScrolled

(cherry picked from commit cf23d4140b)
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dsiders 2025-02-21 16:39:27 -05:00
parent 13aa95664f
commit ce831b303f
1 changed files with 32 additions and 5 deletions
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docs/xml/lcl/dbgrids.xml
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@ -1485,15 +1485,41 @@ Signals the OnDataSetScrolled event handler when assigned.
<p> <p>
<var>DatasetScrolled</var> is a procedure used to signal the <var>DatasetScrolled</var> is a procedure used to signal the
OnDataSetScrolled event handler when it has been assigned in the class OnDataSetScrolled event handler when it has been assigned in the class
instance. instance. DatasetScrolled is used in data sources or controls which change
the active record for the linked Dataset. These classes can implement and
assign a handler routine to perform actions specific to the control.
</p> </p>
<p>
TCustomDBGrid provides a default implementation for the OnDataSetScrolled
event handler which performs the following control-specific actions:
</p>
<ul>
<li>
Updates scroll bar information (when needed).
</li>
<li>
Resets the EditorMode for the control.
</li>
<li>
Selects an Editor when the Active record has not been changed, and invalidates
the control where the data link is used.
</li>
<li>
Updates the active record and invalidates the grid row when the active record
has been changed.
</li>
<li>Restores EditorMode to the value on entry.</li>
</ul>
</descr> </descr>
<seealso> <seealso>
<link id="TComponentDataLink.OnDatasetScrolled"/>
<link id="#fcl.db.TDataLink.ActiveRecord">TDataLink.ActiveRecord</link> <link id="#fcl.db.TDataLink.ActiveRecord">TDataLink.ActiveRecord</link>
</seealso> </seealso>
</element> </element>
<element name="TComponentDataLink.DatasetScrolled.Distance"> <element name="TComponentDataLink.DatasetScrolled.Distance">
<short>Number of records for the event notification.</short> <short>
Number of records for the event notification.
</short>
</element> </element>
<element name="TComponentDataLink.FocusControl"> <element name="TComponentDataLink.FocusControl">
@ -5148,7 +5174,8 @@ collection links to Fields in the associated dataset.
The grid maintains an internal counter that tracks the number of times The grid maintains an internal counter that tracks the number of times
BeginLayout has been called to start a layout change for the control. BeginLayout has been called to start a layout change for the control.
EndLayout decrements that counter, and when it reaches 0 (zero), the EndLayout decrements that counter, and when it reaches 0 (zero), the
DoLayoutChanged method is called. private DoLayoutChanged method is called; scroll bar information is also
updated in this method.
</p> </p>
</descr> </descr>
<seealso> <seealso>
@ -6080,7 +6107,7 @@ automatic columns.
<var>LayoutChanged</var> is a virtual procedure used to link Columns to the <var>LayoutChanged</var> is a virtual procedure used to link Columns to the
Fields which read and write the values used in the control. LayoutChanged Fields which read and write the values used in the control. LayoutChanged
calls the TDBGridColumns.LinkFields method establish the column-to-field calls the TDBGridColumns.LinkFields method establish the column-to-field
association. If Columns have not been explicitly defined the association. If Columns have not been explicitly defined, the
AddAutomaticColumns method is called to add a column for each Field in the AddAutomaticColumns method is called to add a column for each Field in the
linked dataset. linked dataset.
</p> </p>