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Kevin
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 Posted: Mon Jan 26, 2004 8:50 pm Post subject: How to invalidate just one cell of a drawgrid. |
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Does anyone know how to invalidate only one cell of a drawgrid. Right now I
have to call Invalidate(); which causes some delay as all of the cells need
to be redrawn instead of just the one that needs updating.
Thanks,
Kevin
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Remy Lebeau (TeamB)
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| Posted: Mon Jan 26, 2004 9:07 pm Post subject: Re: How to invalidate just one cell of a drawgrid. |
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"Kevin" <didnotinclude (AT) void (DOT) ca> wrote
| Quote: | Does anyone know how to invalidate only one cell of a drawgrid.
Right now I have to call Invalidate(); which causes some delay as
all of the cells need to be redrawn instead of just the one that needs
updating.
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There is no means of doing that with the VCL natively. You will need to
call the Win32 API InvalidateRect() function directly, ie:
RECT r = DrawGrid1->CellRect(Col, Row);
::InvalidateRect(DrawGrid1->Handle, &r, TRUE);
Gambit
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