mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-04-13 07:49:25 +02:00
Docs: LCL/controls. Updates TSizeConstraint topics, including:
* TSizeConstraints * TSizeConstraints.Change * TSizeConstraints.AssignTo * TSizeConstraints.Create * TSizeConstraints.UpdateInterfaceConstraints * TSizeConstraints.SetInterfaceConstraints * TSizeConstraints.EffectiveMinWidth * TSizeConstraints.EffectiveMinHeight * TSizeConstraints.EffectiveMaxHeight * TSizeConstraints.EffectiveMaxWidth * TSizeConstraints.AutoAdjustLayout * TSizeConstraints.Control * TSizeConstraints.Options * TSizeConstraints.OnChange * TSizeConstraints.MaxHeight * TSizeConstraints.MaxWidth * TSizeConstraints.MinHeight * TSizeConstraints.MinWidth
This commit is contained in:
dsiders
parent
8314a122b4
commit
9ef748885d
@ -1077,8 +1077,8 @@ Uncomment when the topic exists in the RTL documentation.
|
||||
<short>Set type used to store values from the TAnchorKind enumeration.</short>
|
||||
<descr>
|
||||
<p>
|
||||
TAnchors is the the type used to implement the Anchors property in TControl
|
||||
and descendent classes.
|
||||
TAnchors is the type used to implement the Anchors property in TControl and
|
||||
descendent classes.
|
||||
</p>
|
||||
</descr>
|
||||
<version>
|
||||
@ -3944,8 +3944,8 @@ and <var>DragImages</var>.
|
||||
<short>Asks the Control to provide a drag cursor.</short>
|
||||
<descr>
|
||||
<p>
|
||||
Called when a TDragPerformer repositions the the mouse pointer during an
|
||||
active drag operation.
|
||||
Called when a TDragPerformer repositions the mouse pointer during an active
|
||||
drag operation.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
@ -5287,10 +5287,36 @@ TSizeConstraints.
|
||||
|
||||
<element name="TSizeConstraints">
|
||||
<short>
|
||||
Holds maximum and minimum values that can be used in sizing objects.
|
||||
Holds minimum and maximum values for the width or height of a control.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<descr>
|
||||
<p>
|
||||
<var>TSizeConstraints</var> is a <var>TPersistent</var> descendant which
|
||||
contains size constraints used to control the minimum or maximum width or
|
||||
height for an associated control. TSizeConstraints is the type used to
|
||||
implement the Constraints property in TControl and descendent classes.
|
||||
</p>
|
||||
<p>
|
||||
The initial values for properties are retrieved from the widgetset class
|
||||
instance for the Control when its handle has been allocated. Values in
|
||||
TSizeConstraints properties are used when the Control is resized or its layout
|
||||
is adjusted, and prevent the control from being resized to Width or Height
|
||||
values that are in excess of the specified minimum or maximum values. If
|
||||
properties are modified in TSizeConstraints, the associated control is updated
|
||||
to apply the new size constraints (when needed).
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.EffectiveMaxHeight"/>
|
||||
<link id="TSizeConstraints.EffectiveMaxWidth"/>
|
||||
<link id="TSizeConstraints.EffectiveMinHeight"/>
|
||||
<link id="TSizeConstraints.EffectiveMinWidth"/>
|
||||
<link id="TSizeConstraints.MinMaxHeight"/>
|
||||
<link id="TSizeConstraints.MinMaxWidth"/>
|
||||
<link id="TControl.Constraints"/>
|
||||
<link id="TControl.AdjustSize"/>
|
||||
<link id="TControl.AutoAdjustLayout"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.FControl"/>
|
||||
@ -5315,20 +5341,74 @@ Holds maximum and minimum values that can be used in sizing objects.
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.Change">
|
||||
<short>Signals an OnChange handler if assigned.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
Adjusts the size for the associated Control, and signals the OnChange handler
|
||||
when assigned.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
Change causes the AdjustSize method to be called in the associated Control.
|
||||
It signals the OnChange event handler (when assigned) using the
|
||||
TSizeConstraints instance as the Sender argument in the notification.
|
||||
</p>
|
||||
<p>
|
||||
Change is called when a new value is assigned to the MaxWidth, MinWidth,
|
||||
MaxHeight, or MinHeight properties. It is called when AssignTo is used to store
|
||||
property values from the class instance to another persistent object. It is
|
||||
also called when the AutoAdjustLayout is used to scale values in MaxWidth,
|
||||
MinWidth, MaxHeight, or MinHeight properties by a specified size factor.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
<link id="TSizeConstraints.OnChange"/>
|
||||
<link id="TSizeConstraints.AssignTo"/>
|
||||
<link id="TSizeConstraints.AutoAdjustLayout"/>
|
||||
<link id="TControl.AdjustSize"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.AssignTo">
|
||||
<short>Copies property values to the specified persistent object.</short>
|
||||
<descr/>
|
||||
<short>
|
||||
Copies property values to the specified persistent object.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>AssignTo</var> is an overridden method in <var>TSizeConstraints</var> used
|
||||
to implement object persistence. It ensures that properties specific to
|
||||
TSizeConstraints are stored to the persistent object in the <var>Dest</var>
|
||||
parameter, and includes the MaxHeight, MaxWidth, MinHeight, and MinWidth
|
||||
properties. The Change method is called to adjust the size for the associated
|
||||
Control, and to signal the OnChange event handler when assigned.
|
||||
</p>
|
||||
<p>
|
||||
No actions are performed in the method if the properties in the class instance
|
||||
have the same values as their counterparts in the Dest argument.
|
||||
</p>
|
||||
<p>
|
||||
If Dest is not derived from TSizeConstraints, the inherited AssignTo method is
|
||||
called.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Change"/>
|
||||
<link id="TSizeConstraints.OnChange"/>
|
||||
<link id="TControl.AdjustSize"/>
|
||||
<link id="#rtl.classes.TPersistent.Assign">TPersistent.Assign</link>
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TSizeConstraints.AssignTo.Dest">
|
||||
<short>Persistent object where property values are stored.</short>
|
||||
<short>
|
||||
Persistent object where property values are stored.
|
||||
</short>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.SetMaxHeight">
|
||||
@ -5376,23 +5456,73 @@ Holds maximum and minimum values that can be used in sizing objects.
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.Create">
|
||||
<short>Constructor for the class instance.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
Constructor for the class instance.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>Create</var> is the constructor for the class instance, and calls the
|
||||
inherited constructor on entry. Create sets the default values for properties
|
||||
including:
|
||||
</p>
|
||||
<ul>
|
||||
<li>MaxHeight (0)</li>
|
||||
<li>MaxWidth (0)</li>
|
||||
<li>MinHeight (0)</li>
|
||||
<li>MinWidth (0)</li>
|
||||
</ul>
|
||||
<p>
|
||||
It also sets the value in the Control property to the associated control
|
||||
specified in the AControl argument.
|
||||
</p>
|
||||
<p>
|
||||
Create calls the UpdateInterfaceConstraints method to ensure that size
|
||||
constraints from the Control are applied to the widgetset class instance when
|
||||
Control is a TWinControl instance and its handle has been allocated.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
<link id="TSizeConstraints.UpdateInterfaceConstraints"/>
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TSizeConstraints.Create.AControl">
|
||||
<short>TControl instance where the size constraints are applied.</short>
|
||||
<short>
|
||||
TControl instance where the size constraints are implemented.
|
||||
</short>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.UpdateInterfaceConstraints">
|
||||
<short>Asks the interface for size constraints.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
Applies size constraints from the specified Control to the widgetset class
|
||||
instance.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
No actions are performed in the method if Control is not derived from
|
||||
TWinControl, or its handle has not been allocated. UpdateInterfaceConstraints
|
||||
is called from the Create constructor after setting default property values,
|
||||
and assigning the associated Control for the class instance.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
<link id="TSizeConstraints.Create"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.SetInterfaceConstraints">
|
||||
<short>
|
||||
Used by the LCL interface to set the widgetset constraints.
|
||||
Used by the LCL interface to set the widgetset constraints in the class
|
||||
instance.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
@ -5402,75 +5532,95 @@ Should only be used by custom components, not by applications.
|
||||
<seealso/>
|
||||
</element>
|
||||
<element name="TSizeConstraints.SetInterfaceConstraints.MinW">
|
||||
<short/>
|
||||
<short>
|
||||
Minimum width provided by the widgetset class instance.
|
||||
</short>
|
||||
</element>
|
||||
<element name="TSizeConstraints.SetInterfaceConstraints.MinH">
|
||||
<short/>
|
||||
<short>
|
||||
Minimum height provided by the widgetset class instance.
|
||||
</short>
|
||||
</element>
|
||||
<element name="TSizeConstraints.SetInterfaceConstraints.MaxW">
|
||||
<short/>
|
||||
<short>
|
||||
Maximum width provided by the widgetset class instance.
|
||||
</short>
|
||||
</element>
|
||||
<element name="TSizeConstraints.SetInterfaceConstraints.MaxH">
|
||||
<short/>
|
||||
<short>
|
||||
Maximum height provided by the widgetset class instance.
|
||||
</short>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.EffectiveMinWidth">
|
||||
<short>
|
||||
Determines the minimum applicable width, given the local and interface
|
||||
Determines the minimum applicable width given the local and interface
|
||||
constraints.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MinMaxWidth"/>
|
||||
<link id="TSizeConstraints.SetInterfaceConstraints"/>
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TSizeConstraints.EffectiveMinWidth.Result">
|
||||
<short>Zero means no constraints.</short>
|
||||
<short>Zero means no size constraint is defined.</short>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.EffectiveMinHeight">
|
||||
<short>
|
||||
Determines the minimum applicable height, given the local and interface
|
||||
Determines the minimum applicable height given the local and interface
|
||||
constraints.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MinMaxHeight"/>
|
||||
<link id="TSizeConstraints.SetInterfaceConstraints"/>
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TSizeConstraints.EffectiveMinHeight.Result">
|
||||
<short>Zero means no constraints.</short>
|
||||
<short>Zero means no size constraint is defined.</short>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.EffectiveMaxWidth">
|
||||
<short>
|
||||
Determines the maximum applicable width, given the local and interface
|
||||
Determines the maximum applicable width given the local and interface
|
||||
constraints.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MinMaxWidth"/>
|
||||
<link id="TSizeConstraints.SetInterfaceConstraints"/>
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TSizeConstraints.EffectiveMaxWidth.Result">
|
||||
<short>Zero means no constraints.</short>
|
||||
<short>Zero means no size constraint is defined.</short>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.EffectiveMaxHeight">
|
||||
<short>
|
||||
Determines the maximum applicable height, given the local and interface
|
||||
Determines the maximum applicable height given the local and interface
|
||||
constraints.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MinMaxHeight"/>
|
||||
<link id="TSizeConstraints.SetInterfaceConstraints"/>
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TSizeConstraints.EffectiveMaxHeight.Result">
|
||||
<short>Zero means no constraints.</short>
|
||||
<short>Zero means no size constraint is defined.</short>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.MinMaxWidth">
|
||||
<short>
|
||||
Determines the constrained Width, and transfers it to the widget.
|
||||
Determines the constrained Width and transfers it to the widget.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
</element>
|
||||
<element name="TSizeConstraints.MinMaxWidth.Result">
|
||||
<short>The constrained width.</short>
|
||||
<short>The actual constrained width.</short>
|
||||
</element>
|
||||
<element name="TSizeConstraints.MinMaxWidth.Width">
|
||||
<short>The suggested width.</short>
|
||||
@ -5478,13 +5628,13 @@ Determines the constrained Width, and transfers it to the widget.
|
||||
|
||||
<element name="TSizeConstraints.MinMaxHeight">
|
||||
<short>
|
||||
Determines the constrained Height, and transfers it to the widget.
|
||||
Determines the constrained Height and transfers it to the widget.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
</element>
|
||||
<element name="TSizeConstraints.MinMaxHeight.Result">
|
||||
<short>The constrained height.</short>
|
||||
<short>The actual constrained height.</short>
|
||||
</element>
|
||||
<element name="TSizeConstraints.MinMaxHeight.Height">
|
||||
<short>The suggested height.</short>
|
||||
@ -5495,8 +5645,33 @@ Determines the constrained Height, and transfers it to the widget.
|
||||
Adjusts width and height values in the class using the specified scaling
|
||||
factors.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<descr>
|
||||
<p>
|
||||
<var>AutoAdjustLayout</var> ensures that assigned (non-zero) values in
|
||||
MinHeight, MaxHeight, MinWidth, and MaxWidth are scaled by the corresponding
|
||||
scaling factor. If any of the property values are scaled, the Change method is
|
||||
called to notify the associated Control that it should adjust it size. The
|
||||
OnChange event is signalled (when assigned).
|
||||
</p>
|
||||
<p>
|
||||
AutoAdjustLayout is called from the DoAutoAdjustLayout method in Control, and
|
||||
occurs after values in BorderSpacing have been scaled. It occurs before the new
|
||||
height and width for the Control are calculated and applied to its BaseBounds.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
<link id="TSizeConstraints.Change"/>
|
||||
<link id="TControl.DoConstraintsChange"/>
|
||||
<link id="TControl.DoAutoAdjustLayout"/>
|
||||
<link id="TControl.BorderSpacing"/>
|
||||
<link id="TControl.AdjustSize"/>
|
||||
<link id="TControl.BaseBounds"/>
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TSizeConstraints.AutoAdjustLayout.AXProportion">
|
||||
<short>Scaling factor applied to width values.</short>
|
||||
@ -5530,45 +5705,218 @@ factors.
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.Control">
|
||||
<short>The <var>Control</var> to which these constraints apply.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
The associated Control to which these constraints apply.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>Control</var> contains the value passed as an argument to the Create
|
||||
constructor. It represents the control which is notified and updated when
|
||||
values in the MaxHeight, MaxWidth, MinHeight, or MinWidth properties are
|
||||
changed. Control is used in the Change method to apply the new size
|
||||
constraints. It also allows access to properties in both the control and its
|
||||
widget instance - like the handle and component state.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.Create"/>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Change"/>
|
||||
<link id="TControl.Constraints"/>
|
||||
<link id="TControl.DoConstraintsChange"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.Options">
|
||||
<short>Options used to determine the size constraints.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
Options used to determine the size constraints.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>Options</var> is a <var>TSizeConstraintsOptions</var> property which
|
||||
contains zero (0) or more values from the <var>TSizeConstraintsOption</var>
|
||||
enumeration. The default value for the property is an empty set (<b>[]</b>).
|
||||
Values in Options are <b>not</b> used in the current LCL implementation.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraintsOption"/>
|
||||
<link id="TSizeConstraintsOptions"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.OnChange">
|
||||
<short>Event handler for a change in the constraints.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
Event handler signalled when a value in the class instance has been changed.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>OnChange</var> is a <var>TNotifyEvent</var> property with the even handler
|
||||
signalled when one of the values in MaxHeight, MaxWidth, MinHeight, or MinWidth
|
||||
has been changed. OnChange is signalled (when assigned) from the Change method
|
||||
using the current class instance as the Sender for the notification. OnChange
|
||||
occurs after the modified constraints have been applied to the associated
|
||||
Control and its size has been adjusted.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Change"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
<link id="TControl.Constraints"/>
|
||||
<link id="TControl.DoConstraintsChange"/>
|
||||
<link id="TControl.AdjustSize"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.MaxHeight">
|
||||
<short>The maximum height.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
The maximum height for the associated Control.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>MaxHeight</var> is a <var>TConstraintSize</var> property which contains
|
||||
the maximum height in pixels allowed for the associated Control. The default
|
||||
value for the property is 0 (zero) and indicates that the size constraint has
|
||||
not been assigned and is not enforced.
|
||||
</p>
|
||||
<p>
|
||||
Changing the value for the property causes assigned (non-zero) values in
|
||||
MaxHeight and MinHeight to be normalized; the smaller of the two values becomes
|
||||
the MinHeight, and the larger of the two values becomes the MaxHeight. The
|
||||
Change method is called to apply the new size constraints to Control, and to
|
||||
signal the OnChange event handler (when assigned).
|
||||
</p>
|
||||
<p>
|
||||
Use MinHeight to set minimum height for the associated Control.
|
||||
</p>
|
||||
<p>
|
||||
Use MaxWidth and MinWidth to set the constrained width for the associated
|
||||
Control.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Change"/>
|
||||
<link id="TSizeConstraints.OnChange"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.MaxWidth">
|
||||
<short>The maximum width.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
The maximum width for the associated Control.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>MaxWidth</var> is a <var>TConstraintSize</var> property which contains
|
||||
the maximum width in pixels allowed for the associated Control. The default
|
||||
value for the property is 0 (zero) and indicates that the size constraint has
|
||||
not been assigned and is not enforced.
|
||||
</p>
|
||||
<p>
|
||||
Changing the value for the property causes assigned (non-zero) values in
|
||||
MaxWidth and MinWidth to be normalized; the smaller of the two values becomes
|
||||
the MinWidth, and the larger of the two values becomes the MaxWidth. The
|
||||
Change method is called to apply the new size constraints to Control, and to
|
||||
signal the OnChange event handler (when assigned).
|
||||
</p>
|
||||
<p>
|
||||
Use MinWidth to set minimum width for the associated Control.
|
||||
</p>
|
||||
<p>
|
||||
Use MaxHeight and MinHeight to set the constrained height for the associated
|
||||
Control.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Change"/>
|
||||
<link id="TSizeConstraints.OnChange"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.MinHeight">
|
||||
<short>The minimum height.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
The minimum height for the associated Control.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>MinHeight</var> is a <var>TConstraintSize</var> property which contains
|
||||
the minimum height in pixels allowed for the associated Control. The default
|
||||
value for the property is 0 (zero) and indicates that the size constraint has
|
||||
not been assigned and is not enforced.
|
||||
</p>
|
||||
<p>
|
||||
Changing the value for the property causes assigned (non-zero) values in
|
||||
MaxHeight and MinHeight to be normalized; the smaller of the two values becomes
|
||||
the MinHeight, and the larger of the two values becomes the MaxHeight. The
|
||||
Change method is called to apply the new size constraints to Control, and to
|
||||
signal the OnChange event handler (when assigned).
|
||||
</p>
|
||||
<p>
|
||||
Use MaxHeight to set minimum height for the associated Control.
|
||||
</p>
|
||||
<p>
|
||||
Use MaxWidth and MinWidth to set the constrained width for the associated
|
||||
Control.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.MinWidth"/>
|
||||
<link id="TSizeConstraints.Change"/>
|
||||
<link id="TSizeConstraints.OnChange"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TSizeConstraints.MinWidth">
|
||||
<short>The minimum width.</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<short>
|
||||
The minimum width for the associated Control.
|
||||
</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>MixWidth</var> is a <var>TConstraintSize</var> property which contains
|
||||
the minimum width in pixels allowed for the associated Control. The default
|
||||
value for the property is 0 (zero) and indicates that the size constraint has
|
||||
not been assigned and is not enforced.
|
||||
</p>
|
||||
<p>
|
||||
Changing the value for the property causes assigned (non-zero) values in
|
||||
MaxWidth and MinWidth to be normalized; the smaller of the two values becomes
|
||||
the MinWidth, and the larger of the two values becomes the MaxWidth. The
|
||||
Change method is called to apply the new size constraints to Control, and to
|
||||
signal the OnChange event handler (when assigned).
|
||||
</p>
|
||||
<p>
|
||||
Use MaxWidth to set maximum width for the associated Control.
|
||||
</p>
|
||||
<p>
|
||||
Use MaxHeight and MinHeight to set the constrained height for the associated
|
||||
Control.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TSizeConstraints.MaxHeight"/>
|
||||
<link id="TSizeConstraints.MinHeight"/>
|
||||
<link id="TSizeConstraints.MaxWidth"/>
|
||||
<link id="TSizeConstraints.Change"/>
|
||||
<link id="TSizeConstraints.OnChange"/>
|
||||
<link id="TSizeConstraints.Control"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TConstrainedResizeEvent">
|
||||
@ -10422,7 +10770,7 @@ Contains the result for the Drag message.
|
||||
The Result member is polymorphic:
|
||||
</p>
|
||||
<p>
|
||||
For dmFindTarget, the result is a reference to the the target control. For
|
||||
For dmFindTarget, the result is a reference to the target control. For
|
||||
dmDragDropm the result is zero (0). For other drag messages, the result
|
||||
indicates acceptance of the drop message.
|
||||
</p>
|
||||
@ -11588,7 +11936,7 @@ in the LCL translation facilities.
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TControl.SetParent.NewParent">
|
||||
<short>New value for the the Parent property.</short>
|
||||
<short>New value for the Parent property.</short>
|
||||
</element>
|
||||
|
||||
<element name="TControl.SetParentBackground">
|
||||
@ -12086,7 +12434,7 @@ RemoveHandler can be used if the control handler type is passed as an
|
||||
argument.
|
||||
</p>
|
||||
<p>
|
||||
See EnabledChanged for the actions performed after the value in Enabled is
|
||||
See EnabledChanged for the actions performed after the value in Enabled is
|
||||
updated.
|
||||
</p>
|
||||
</descr>
|
||||
@ -16279,7 +16627,7 @@ conditions are satisfied.
|
||||
</dd>
|
||||
</dl>
|
||||
<p>
|
||||
ShowHelp is called from methods in the the TApplication instance. It occurs
|
||||
ShowHelp is called from methods in the TApplication instance. It occurs
|
||||
when the F1 key is pressed when the control has focus, or when its
|
||||
ShowHelpForObject method is called for a specific control instance.
|
||||
</p>
|
||||
@ -23799,7 +24147,7 @@ event like: Ctrl, Shift, Alt, or Meta.
|
||||
</p>
|
||||
<remark>
|
||||
When a key is held down, the OnKeyDown event is re-triggered. The first
|
||||
re-triggered event occurs after approximately 500ms, and subsequent events
|
||||
re-triggered event occurs after approximately 500ms, and subsequent events
|
||||
cycle between 30ms and 50ms until the key is released.
|
||||
</remark>
|
||||
<p>
|
||||
@ -23984,7 +24332,7 @@ instance. Setting the property to <b>0</b> (zero) causes the handle to be
|
||||
destroyed. <b>0</b> is the unassigned handle value.
|
||||
</p>
|
||||
<p>
|
||||
ParentWindow is used in the the CreateWnd method to form an association
|
||||
ParentWindow is used in the CreateWnd method to form an association
|
||||
between the Handle in the widgetset class instance and the window handle
|
||||
for a control.
|
||||
</p>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user