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

# TOpenDialog

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

TOpenDialog : open a file in the current directory, selected by File Dialog.

## Declaration

Source position: dialogs.pp line 184

`type TOpenDialog = class(TFileDialog)`
`protected`
`procedure WSRegisterClass; override;` |  | WSRegisterClass - Register this Class for the current Widget Set
`procedure DereferenceLinks; virtual;` |  | DereferenceLinks - removes all existing referential links
`function CheckFile(); virtual;` |  | CheckFile - returns True if the nominated file meets all requirements.
`function CheckFileMustExist(); virtual;` |  | CheckFileMustExist - returns True if a file with the supplied name actually exists
`function CheckAllFiles; virtual;` |  | A protected method which calls CheckFile for each selected file, returns True if all are OK
`function DoExecute; override;` |  | The function that actually takes care of executing the dialog
`function DefaultTitle; override;` |  | DefaultTitle - returns the default title for a dialog
`public`
`constructor Create(); override;` |  | Create - constructor for TOpenDialog: calls inherited Create then loads default options
`procedure DoFolderChange; virtual;` |  | DoFolderChange - execute the code for a folder change
`procedure DoSelectionChange; virtual;` |  | DoSelectionChange - execute the code for a change in selection
`procedure IntfSetOption();`
`published`
`property Options: TOpenOptions; [rw]` |  | Options to be used for this dialog
`property OnFolderChange: TNotifyEvent; [rw]` |  | Event triggered when the user changes the folder in the OpenDialog.
`property OnSelectionChange: TNotifyEvent; [rw]` |  | Event triggered when the user changes the selection made in the OpenDialog.
`end;`

## Inheritance

`TOpenDialog` |  | TOpenDialog : open a file in the current directory, selected by File Dialog.
`TFileDialog` |  | TFileDialog : allows selection of a file from the current directory.
`TCommonDialog` |  | TCommonDialog : the base type from which other dialogs are derived
`TLCLComponent`
?
`TObject`

## Description

TOpenDialog : open a file in the current directory, selected by File Dialog.
If the required file is not in the current directory, another directory can be selected with Select Directory

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