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tEdit and text>64KB

I have to pass a big text(~1MB) to an tMemo. Under winXP it works fine because winXp is pure 32bit code but under win98 the memo control is implemented with 16bit code, so it can only hold 64KB.

If i try to use tRichEdit, i have to wait 30sec for the 1MB text to be passed to the RichEdit1:

RichEdit1.lines.BeginUpdate;
RichEdit1.Lines.text := one_MB_big_ansi_string;
RichEdit1.Lines.EndUpdate;

So tRichEdit is not a solution. I can't understand why tMemo in winXP(32bit code) is a lot faster than tRichEdit(also 32bit code). There must be a difference.

Any ideeas on how i could work around this?

ASKER CERTIFIED SOLUTION

Mohammed Nasman

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Wim ten Brink

A richtext will parse the text that you're inputting to search for special format characters.

Have you considered using a TListbox instead? Or other components?

kretzschmar

you can extend the (default) limit with a EM_LIMITTEXT or EM_EXLIMITTEXT message

see also

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/editcontrols/editcontrolreference/editcontrolmessages/em_limittext.asp

meikl ;-)

ginsonic

In your form create func add this line :

SendMessage(RichEdit1.Handle, EM_EXLIMITTEXT, 0, $7FFFFFFF);

ginsonic

Or:

RichEdit11.MaxLength := $7FFFFFF0;

ginsonic

I use this code and can load in less that a second ~2MB .

ginsonic

not sure if is the best way. just a comment!

tEdit and text&gt;64KB

tEdit and text>64KB