Hi,
you can try
TForm1.FormCreate(Sender:TObject);
begin
Memo1.DoubleBuffered:=True;
end;
Am 29.04.2013 18:34, schrieb Jürgen Hestermann:
After having moved from TStringList over TStringGrid (which both
cannot be shifted right to make long text visible) I now use TMemo.
But again I have another issue with this component: If there are more
rows than can be displayed in the window and I change the text in the
last row (Lines.Count-1) rapidly then the whole display flickers. This
OnClick event demonstrates it:
-------------------------------------------------------
with Memo1 do
begin
for i := 1 to 40 do
begin
if odd(i) then
Append('\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\')
else
Append('+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++');
end;
for i := 1 to 1000 do
begin
Lines[Lines.Count-1] := '#### LAST LINE
---'+IntToStr(i)+'-----------------------------------------------------------';
Application.Processmessages;
end;
Memo1.Lines[Lines.Count-1] := '#### READY #### ';
end;
-------------------------------------------------------
When you click on the memo (so that the routine runs) and the window
is small enough then all lines are shifted down for a short time and
then are shifted up again when writing to Memo1.Lines[Lines.Count-1].
This flicker is quite disturbing and it does not happen when there are
only a few lines (which fit in the window). Is this a known bug?
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