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Docs: LCL/controls. Updates content in TWinControl.SetChildZPosition to reflect changes in 853461fe.

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dsiders 2023-08-23 01:27:08 +01:00
parent 7c055798ef
commit 60b8ad9d52
1 changed files with 45 additions and 2 deletions
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docs/xml/lcl/controls.xml
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@ -22900,8 +22900,51 @@ New value for the Color property.
<short>
Updates the position of the child control in the Z plane (i.e. front-to-back).
</short>
<descr/>
<seealso/>
<descr>
<p>
<var>SetChildZPosition</var> repositions the child control in <var>AChild</var>
in the display order for the child Controls in the class instance. No actions
are performed in the method when:
</p>
<ul>
<li>
The Controls list has not been allocated.
</li>
<li>
AChild has not been assigned (contains <b>Nil</b>).
</li>
<li>
AChild is not stored in the child Controls for the class instance.
</li>
</ul>
<p>
<var>APosition</var> contains the new relative display order on the Z-axis for
the specified child control. A value in APosition must be in the range allowed
in Controls (0..Controls.Count-1). Smaller values in APosition move the child
control towards the front or top of the display order. Larger values move the
child control towards the bottom or back of the display order.
</p>
<p>
SetChildZPosition calls the Move method in Controls to change the ordinal
position for the specified control in the list.
</p>
<p>
If AChild is a TWinControl descendant, the SetChildZPosition method in the
widgetset class is used to notify the child controls which have a valid
handle. If AChild is a TControl instance, its InvalidateControl method is
called to redraw the control using its visibility and opacity settings.
</p>
<p>
SetChildZPosition is used to implement the SetControlIndex method.
</p>
</descr>
<seealso>
<link id="TWinControll.Controls"/>
<link id="TWinControll.ControlCount"/>
<link id="TWinControll.Handle"/>
<link id="TWinControll.SetControlIndex"/>
<link id="TControll.InvalidateControl"/>
</seealso>
</element>
<element name="TWinControl.SetChildZPosition.AChild">
<short>Control to locate and move in the method.</short>