Unit 'ExtCtrls' Package
[Overview][Types][Classes][Procedures and functions][Index] [#lcl]

TCustomFlowPanel

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

The base class for TFlowPanel.

Declaration

Source position: extctrls.pp line 1246

type TCustomFlowPanel = class(TCustomPanel)

protected

  procedure CMControlChange(); message;

  

Handles the CM_CONTROLCHANGE message.

  procedure AlignControls(); override;

  

Performs layout and alignment for flowed controls on the panel.

  procedure CalculatePreferredSize(); override;

  

Calculates the preferred size for the control.

public

  constructor Create(); override;

  

Constructor for the class instance.

  destructor Destroy; override;

  

Destructor for the class instance.

  function GetControlIndex();

  

Gets the ordinal position in ControlList for the specified control.

  procedure SetControlIndex();

  

Sets the Index position in ControlList for the specified control.

  property AutoWrap: Boolean; [rw]

  

Determines if controls in TCustomFlowPanel are wrapped.

  property ControlList: TFlowPanelControlList; [rw]

  

Container used to stored TFlowPanelControl instances on the panel.

  property FlowStyle: TFlowStyle; [rw]

  

Contains the flow direction used to position controls on the panel.

  property FlowLayout: TTextLayout; [rw]

  

Use FlowLayout to set the layout (alignment) for the non-flowed coordinate. The default value is tlTop.

end;

Inheritance

TCustomFlowPanel

  

The base class for TFlowPanel.

|

TCustomPanel

  

The base class for a general container which can hold other objects. It has a customizable border and a central text.

|

TCustomControl

  

The base class for windowed controls which paint themselves.

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TWinControl

  

Implements a windowed control which can contain other child controls.

|

TControl

  

The base class for visible controls.

|

TLCLComponent

  

|

TObject

Description

TCustomFlowPanel is a TCustomPanel descendant used to automatically position controls added to the panel in a grid-like layout.

The FlowStyle property determines layout direction for controls added to the panel.

FlowLayout controls the vertical positioning for controls in given row on the panel.

The ControlList property provides a list of wrapper classes maintained for each of the controls on the panel. Its items maintain the position and wrapping options for each control using the FlowStyle and FlowLayout algorithms.

Adding a control to the panel causes it to be positioned at the next cell in the layout. The Left and Top coordinates for each control are adjusted to position the control within a cell using the FlowStyle and FlowLayout properties for the panel. The Anchors and Align properties for child controls are ignored. The BorderSpacing setting for the controls is used, however.

AutoWrap indicates whether the controls are automatically flowed into rows based on their settings in ControlList.

See also

TCustomPanel

  

The base class for a general container which can hold other objects. It has a customizable border and a central text.

TFlowPanel

  

Implements a panel with flowed layout for its controls.



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