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ToM

hi!

how can one The brightness and the contrast of Images take on
Have the forum found but not found

mfg tom

AMD Athlon 64 4500+ / 1500 MB Ram / Windows Server 2003 Enterprise / Profan 7.0

03/20/06 ▲

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Frank
Abbing

take off Images? For which?

03/20/06 ▲

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ToM

wants one bildbetracher make. it can now Images directly by klick oeffnen, print,export etc
still it waeren effects neither badly, and so moechte I simply of bmp/Images The brightness
and contrast Change, that m[sste still gehn or

mfg tom

AMD Athlon 64 4500+ / 1500 MB Ram / Windows Server 2003 Enterprise / Profan 7.0

03/20/06 ▲

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clear does it.

i'm me now not attempt sure whether The Prospeed.Dll

these functions abdeckt, but z.B. with Franks Dib.Dll and a little Inline-Asm, or only a little bit inline-Asm does it already.

If only with InlineAsm and not Dib.Dll, then become You The Operationen warscheinlich in the startpaint -1 - area manage, and then the Mainwindow blitten.

Hierfür first whom DC of Memory bitmap fetch
Compile Mark Separation

startpaint -1
dc&=getdc(%hdc)
endpaint
heller dc&,$000000FF//rotpre>

then will need you a AsmBlock, so ca.
Compile Mark Separation

asmstart heller

    parameters dc&,col&
    ;hier aber ne schleife welche einen ganzen pixelblock abdeckt statt nur ein einzelnes setpixel
    invoke SetPixel,para1,0,0,col&
    mov eax,0

as

If you The Dib.Dll uses does it whole still one bisl faster, there You The Api GetPixel

not benötigst, but in memory agierst.

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Frank
Abbing

Hi.

The ProSpeed.dll deckt the quite ex.
Heller/darker goes with Lighten(), Darken(). contrast goes with Sharpen().

The SetPixel-Solution functions yet for small Images. with grossen is tappt im dunkeln but too slow.
with the Dib.dll-Solution müsstest You The effects yourself program (Assembler). bright/dark is very simply To make. contrast is tougher.

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