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- {*******************************************************}
- { }
- { Delphi Visual Component Library }
- { }
- { Copyright (c) 1995 Borland International }
- { }
- {*******************************************************}
-
- unit Clipbrd;
-
- interface
-
- uses WinTypes, WinProcs, Messages, Classes, Graphics;
-
- var
- CF_PICTURE: Word;
- CF_COMPONENT: Word;
-
- { TClipboard }
-
- { The clipboard object encapsulates the Windows clipboard.
-
- Assign - Assigns the given object to the clipboard. If the object is
- a TPicture or TGraphic desendent it will be placed on the clipboard
- in the corresponding format (e.g. TBitmap will be placed on the
- clipboard as a CF_BITMAP). Picture.Assign(Clipboard) and
- Bitmap.Assign(Clipboard) are also supported to retrieve the contents
- of the clipboard.
- Clear - Clears the contents of the clipboard. This is done automatically
- when the clipboard object adds data to the clipboard.
- Close - Closes the clipboard if it is open. Open and close maintain a
- count of the number of times the clipboard has been opened. It will
- not actually close the clipboard until it has been closed the same
- number of times it has been opened.
- Open - Open the clipboard and prevents all other applications from changeing
- the clipboard. This is call is not necessary if you are adding just one
- item to the clipboard. If you need to add more than one format to
- the clipboard, call Open. After all the formats have been added. Call
- close.
- HasFormat - Returns true if the given format is available on the clipboard.
- GetAsHandle - Returns the data from the clipboard in a raw Windows handled
- for the specified format. The handle is not owned by the application and
- the data should be copied.
- SetAsHandle - Places the handle on the clipboard in the given format. Once
- a handle has been given to the clipboard it should *not* be deleted. It
- will be deleted by the clipboard.
- GetTextBuf - Retrieves
- AsText - Allows placing and retrieving text from the clipboard. This property
- is valid to retrieve if the CF_TEXT format is available.
- FormatCount - The number of formats in the Formats array.
- Formats - A list of all the formats available on the clipboard. }
-
- type
- TClipboard = class(TPersistent)
- protected
- procedure AssignTo(Dest: TPersistent); override;
- public
- procedure Assign(Source: TPersistent); override;
- procedure Clear;
- procedure Close;
- function GetComponent(Owner, Parent: TComponent): TComponent;
- function GetAsHandle(Format: Word): THandle;
- function GetTextBuf(Buffer: PChar; BufSize: Integer): Integer;
- function HasFormat(Format: Word): Boolean;
- procedure Open;
- procedure SetComponent(Component: TComponent);
- procedure SetAsHandle(Format: Word; Value: THandle);
- procedure SetTextBuf(Buffer: PChar);
- property AsText: string;
- property FormatCount: Integer;
- property Formats[Index: Integer]: Word;
- end;
-
- var
- Clipboard: TClipboard;
-
- implementation
-