JVCL Help:TJvLinkedControls

 JVCL Help: TJvLinkedControls Class

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► JvLinkedControls.pas Classes

[+] JvLinkedControls.pas Classes

► TJvLinkedControls Methods

[+] TJvLinkedControls Methods

► TJvLinkedControls Properties

[+] TJvLinkedControls Properties

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Class Hierarchy

TJvLinkedControls

run\JvLinkedControls.pas

Summary

Maintains a list of linked controls.

run\JvLinkedControls.pas

Pascal

 run\JvLinkedControls.pas

 TJvLinkedControls = class(TOwnedCollection);

Description

TJvLinkedControls is used as a support class for controls that want to modify the Enabled state of other controls when its own properties changes. TJvLinkedControls cannot be used by itself: it must be associated with an owning control.
To add support for TJvLinkedControls to a control, you should:

• Declare a published property of type TJvLinkedControls
• Create the TJvLinkedControls instance in the constructor and set the AControl parameter ofTJvLinkedControls.Create to self.
• Destroy the TJvLinkedControls instance in the destructor.
• Override the control's Notification procedure and call TJvLinkedControls.Notification.
• Implement a method that iterates the list of linked controls when the Enabled state of the linked controls needs to be checked or changed.
  

For examples of controls using TJvLinkedControls, see TJvCheckBox and TJvRadioButton.

run\JvLinkedControls.pas

About

Navigation

▼ TJvLinkedControls

  TJvLinkedControls

  TJvLinkedControls.Add

  TJvLinkedControls.Assign@TPersistent

  TJvLinkedControls.Create@TControl

  TJvLinkedControls.Items

  TJvLinkedControls.Notification@TComponent@TOperation

  TJvLinkedControls.OnChange

  TJvLinkedControls.RestoreEnabled

  TJvLinkedControls.Update@TCollectionItem

run\JvLinkedControls.pas

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