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Red
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 Posted: Wed Sep 01, 2004 1:31 pm Post subject: Delay Timage repaint |
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Is there some way to tell a TImage *not* to repaint for a time? I
want to move several components over top of it, and when I'm done,
I'll call a repaint manually. I looked for something like a
"BeingUpdate" / "EndUpdate" sort of thing but here's nothing like
that. The lines of code to move the objects will be in a single
thread and there will be no "Application.ProcessMessages" amongst
them.
Thanks in advance.
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Nils Haeck
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| Posted: Wed Sep 01, 2004 2:14 pm Post subject: Re: Delay Timage repaint |
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I don't know of any simple way. But you can create your own custom TImage
control descendant and then override the Paint method, and put a line like
"if IsUpdating then exit" in it.
Nils
"Red" <nospam_kandw321 (AT) icrossroads (DOT) com> wrote
| Quote: | Is there some way to tell a TImage *not* to repaint for a time? I
want to move several components over top of it, and when I'm done,
I'll call a repaint manually. I looked for something like a
"BeingUpdate" / "EndUpdate" sort of thing but here's nothing like
that. The lines of code to move the objects will be in a single
thread and there will be no "Application.ProcessMessages" amongst
them.
Thanks in advance.
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Yannis
Guest
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| Posted: Wed Sep 01, 2004 2:20 pm Post subject: Re: Delay Timage repaint |
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[email]nospam_kandw321 (AT) icrossroads (DOT) com[/email] (Red) wrote in news:4135ce69.6765918
@newsgroups.borland.com:
| Quote: | Is there some way to tell a TImage *not* to repaint for a time? I
want to move several components over top of it, and when I'm done,
I'll call a repaint manually. I looked for something like a
"BeingUpdate" / "EndUpdate" sort of thing but here's nothing like
that. The lines of code to move the objects will be in a single
thread and there will be no "Application.ProcessMessages" amongst
them.
Thanks in advance.
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How about
Form.Canvas.lock;
try
// do what ever
finally
Form.Canvas.Unlock;
Form.Refresh;
end;
Regards.
--
Yannis Kozikopoulos
Software Engineer
Market Data & Analysis
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PROFILE S. A.
Sigrou Av 199, 171 21 Athens
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