Скопировать строки TListBox в буфер обмена

uses

   Clipbrd;

 procedure
 ListBoxToClipboard(ListBox: TListBox;
   BufferSize: Integer;
   CopyAll: Boolean);
 var

   Buffer: PChar;
   Size: Integer;
   Ptr: PChar;
   I: Integer;
   Line: string
[255];
   Count: Integer;
 begin

   if
 not
 Assigned(ListBox) then

     Exit;

   GetMem(Buffer, BufferSize);
   Ptr   := Buffer;
   Count := 0;
   for
 I := 0 to
 ListBox.Items.Count - 1 do

   begin

     Line := ListBox.Items.strings[I];
     if
 not
 CopyAll and
 ListBox.MultiSelect and
 (not
 ListBox.Selected[I]) then

       Continue;
     { Check buffer overflow }
     Count := Count + Length(Line) + 3;
     if
 Count = BufferSize then

       Break;
     { Append to buffer }
     Move(Line[1], Ptr^, Length(Line));
     Ptr    := Ptr + Length(Line);
     Ptr[0] := #13;
     Ptr[1] := #10;
     Ptr    := Ptr + 2;
   end
;
   Ptr[0] := #0;
   ClipBoard.SetTextBuf(Buffer);
   FreeMem(Buffer, BufferSize);
 end
;

 procedure
 ClipboardToListBox(ListBox: TListbox);
 begin

   if
 not
 Assigned(ListBox) then

     Exit;

   if
 not
 Clipboard.HasFormat(CF_TEXT) then

     Exit;

   Listbox.Items.Text := Clipboard.AsText;
 end
;


 //Copy all items from Listbox1 to the clipboard 
procedure
 TForm1.Button1Click(Sender: TObject);
 begin

   ListBoxToClipboard(ListBox1, 1024, True);
 end
;

 //Paste items in clipboard to Listbox2 
procedure
 TForm1.Button2Click(Sender: TObject);
 begin

   ClipboardToListBox(Listbox2);
 end
;

 //Copy only selected items from Listbox1 to the clipboard 
procedure
 TForm1.Button3Click(Sender: TObject);
 begin

   ListBoxToClipboard(Listbox1, 1024, False);
 end
;

Другое по теме:

• Форма как графический объект
• Сохранить содержимое буфера обмена или потока как картинку
• Сохранение данных в Clipboard