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We will find spaces and tab symbols, when somebody press Enter-key. And we will add this symbols to the new string in Memo.
procedure TForm1.Memo1KeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
var
LineNum: Integer;
Str: string;
i: Integer;
begin
StrDop:='';
if Key=13 then
begin
LineNum:=Memo1.Perform(EM_LINEFROMCHAR, Memo1.SelStart, 0);
Str:=Memo1.Lines[LineNum];
i:=1;
if Str<>'' then
begin
while (Str[i]=' ')or(Str[i]=#9) do
Inc(i);
StrDop:=Copy(Str,1,i-1);
end;
end;
end;
procedure TForm1.Memo1KeyUp(Sender: TObject; var Key: Word;
Shift: TShiftState);
var
LineNum: Integer;
begin
if StrDop<>'' then
begin
LineNum:=Memo1.Perform(EM_LINEFROMCHAR, Memo1.SelStart, 0);
Memo1.Lines[LineNum]:=Memo1.Lines[LineNum]+StrDop;
end;
end;
- Related topics
-
Set caret position in RichEdit
Get Memo current line
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