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 Topic  |
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klausdoege
Germany
389 Posts |
 Posted - Jul 30 2012 : 13:59:57
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Hello,
if I process big pictures and use the function
imageenvect.LayersCreateFromSelection;
then a white surface always appears short-term
over the entire picture before I seeing the new layer.
How can I prevent that?
Klaus
www.klausdoege.de |
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fab
1310 Posts |
Posted - Aug 01 2012 : 09:36:37
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Hello,
how much big is your picture (in pixels)? |
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klausdoege
Germany
389 Posts |
Posted - Aug 01 2012 : 13:08:25
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Hello,
my picture has 2700x3600 pixels.
But it happens also with 800x1200 pixels, only the white picture is visible more shortly.
Klaus
www.klausdoege.de |
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Uwe
284 Posts |
Posted - Aug 02 2012 : 12:22:28
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Klaus,
have you tried to wrap the whole thing into a SendMessage(Handle, WM_SETREDRAW, 0, 0) block?
Uwe |
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klausdoege
Germany
389 Posts |
Posted - Aug 02 2012 : 13:12:21
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Hello,
no the function becomes normally after generates a selection called.
if I use:
imageenvect.CopySelectionToIEBitmap(MyImageEnView1.IEBitmap);
imageenvect.LayersAdd(MyImageEnView1.IEBitmap);
everything works very well, without white shows.
Klaus
www.klausdoege.de |
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Uwe
284 Posts |
Posted - Aug 02 2012 : 17:25:11
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So what happens if you use
SendMessage(ImageEnVect1.Handle, WM_SETREDRAW, 0, 0)
ImageEnVect1.LayersCreateFromSelection;
ImageEnVect1.CopySelectionToIEBitmap(MyImageEnView1.IEBitmap);
ImageEnVect1.LayersAdd(MyImageEnView1.IEBitmap);
SendMessage(ImageEnVect1.Handle, WM_SETREDRAW, 1, 0);
RedrawWindow(ImageEnVect1.Handle, nil, 0, RDW_FRAME or RDW_INVALIDATE or RDW_ALLCHILDREN or RDW_NOINTERNALPAINT); |
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klausdoege
Germany
389 Posts |
Posted - Aug 03 2012 : 14:29:21
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Hello Uwe,
thank you for the tip.
SendMessage(ImageEnVect.Handle, WM_SETREDRAW, 0, 0);
imageenvect.LayersCreateFromSelection;
SendMessage(ImageEnVect.Handle, WM_SETREDRAW, 1, 0);
RedrawWindow(ImageEnVect.Handle, nil, 0, RDW_FRAME or RDW_INVALIDATE or RDW_ALLCHILDREN or RDW_NOINTERNALPAINT);
Now, it runs just like it must be.
best greetings
Klaus
www.klausdoege.de |
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