Vcl.Forms.TCloseEvent

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C++

typedef void __fastcall (__closure *TCloseEvent)(System::TObject* Sender, System::Uitypes::TCloseAction &Action);

Properties

Type Visibility Source Unit Parent
typedef public Vcl.Forms.hpp Vcl.Forms Vcl.Forms

Description

TCloseEvent is the type of a form's OnClose event handle.

The TCloseEvent type points to a method that handles the closing of a form. The Sender parameter is the form that the user tried to close. The Action parameter returns the action you want the form to take when it closes.

Setting Action controls how the form responds to the attempt to close it as shown below :



Value Meaning

caNone

The form is not allowed to close, so nothing happens.

caHide

The form is not closed, but just hidden. Your application can still access a hidden form.

caFree

The form is closed and all allocated memory for the form is freed.

caMinimize

The form is minimized, rather than closed. This is the default action for MDI child forms.



See Also