[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Forms' (#lcl)

TCustomForm.BorderStyle

The border style affects the title bar, border, icon(s), and resize behavior for the form.

Declaration

Source position: forms.pp line 770

public property TCustomForm.BorderStyle : TFormBorderStyle
  read FFormBorderStyle
  write SetFormBorderStyle
  default bsSizeable;

Description

BorderStyle is a TFormBorderStyle property used to control the appearance of the border on a form. The default value is bsSizeable and displays the standard border for a sizeable window. But it could, for example, be a dialog form or a tool window, or could be non-sizeable. See TFormBorderStyle for the enumeration values allowed in the property and their meanings.

Changing the value for the property causes other properties in the form instance to be updated:

AutoScroll
Disabled when the property contains a value other than bsSizeable or bsSizeToolWin.
BorderIcons
Updated at run-time when the new property value requires a different set of default border icons than the previous value.
Icon, SmallIconHandle, BigIconHandle
Updated at run-time by performing the CM_ICONCHANGED control message.
Menu
Updated at run-time to create (or re-create) the window handle for a TMainMenu instance using the Handle for the form.

In TCustomForm (and TForm), BorderStyle is slightly different (has a different base type) from the TCustomControl.BorderStyle property. When the form is put into another control the window borders depend on the widgetset. There are no borders under GTK.

See also

TCustomForm.AutoScroll

  

Indicates if the form can automatically show or hide scroll bars.

TCustomForm.Icon

  

The Icon associated with this Form (in minimized state).

TCustomForm.SmallIconHandle

  

Returns (and optionally creates) the Handle for the small Icon used for the form.

TCustomForm.BigIconHandle

  

Returns the handle for the large icon on the form or in the application.

TCustomForm.CMIconChanged

  

Handles the CM_ICONCHANGED control message for the form.

TCustomForm.Menu

  

The main menu for the form instance.

TFormBorderStyle

  

Represents border styles available for a Form.

TBorderStyle

  

Possible types of borders (with or without border).

TCustomControl.BorderStyle

  

Indicates the border style displayed around the control.

Version 4.0 Generated 2025-05-03 Home