背景を抜いたイメージの半透明処理

[S.Ito]

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$B%$%a!<%8(BA$B$O!"%$%a!<%8$J$i(BIPicture$B$N(BRender$B%a%=%C%I$G!"%F%-%9%H$O(BDrawText$B$G%a%b%j(BDC$B$KIA2h$7$F$$$^$9!#%$%a!<%8(BB$B$b%a%b%j(BDC$B>e$K$"$j$^$9!#(B

$B0J>e!"$465<(D:$1$l$P9,$$$G$9!#(B
WinXP HE SP2 VC6SP5 MFC.exe

[UETA, Shin-ichi]

$B$3$s$K$A$O!"?"ED$G$9!#(B

$BG$0U$N%"%k%U%!CM$G(BAlphaBlend$B!"$H$$$&$N$,0lHVNI$5$=$&$J$N(B
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Alpha Blending $B$r3[LL$I$*$j$K$H$i$($l$P2DG=$K;W$($^$9$,(B...?

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$B%l%$%d!<%I(B $B%&%#%s%I%&(B
http://www.microsoft.com/japan/msdn/windows/windows2000/layerwin.asp
Per Pixel Alpha Blend
http://www.codeproject.com/gdi/pxalphablend.asp

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[S.Ito]

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$B$$$D$b$"$j$,$H$&$4$6$$$^$9!#(B

Post by UETA, Shin-ichi

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Alpha Blending $B$r3[LL$I$*$j$K$H$i$($l$P2DG=$K;W$($^$9$,(B...?

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[とっちゃん]

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[S.Ito]

$B$H$C$A$c$s$5$s!"$3$s$K$A$O!#(B
$B%l%9$"$j$,$H$&$4$6$$$^$9!#(B

Post by とっちゃん
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[とっちゃん]

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Post by S.Ito
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[K.J.K.]

K.J.K.$B$G$9!#(B

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"S.Ito" wrote in message

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[S.Ito]

K.J.K.$B$5$s!"$3$s$K$A$O!#(B
$B%l%9$"$j$,$H$&$4$6$$$^$9!#(B

Post by K.J.K.
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[K.J.K.]

K.J.K.$B$G$9!#(B

"S.Ito" wrote in message

$B$H$$$&$3$H$G$7$g$&$+(B?

$BBh(B1$B0F$H$7$F$O$3$l$G$9!#(B

$B$9$k$h$j$O$k$+$KAa$/$G$-$k$h$&$G$9!#(B

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[S.Ito]

Post by K.J.K.

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$BBh(B1$B0F$H$7$F$O$3$l$G$9!#(B

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K.J.K.$B$5$s!"$"$j$,$H$&$4$6$$$^$7$?!#(B

[T.Sawamoto]

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BitBlt(
hdcC, 0, 0, CXBMP, CYBMP,
hdcB, 0, 0,
SRCCOPY);
TransparentBlt(
hdcC, 0, 0, CXBMP, CYBMP,
hdcA, 0, 0, CXBMP, CYBMP,
colTransparent);
AlphaBlend(
hdcB, 0, 0, CXBMP, CYBMP,
hdcC, 0, 0, CXBMP, CYBMP,
blend);

$B$N$h$&$J46$8$G!D!#(B

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$B$N(B $B$N(B E-Mail : ***@quasar.sakura.ne.jp
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[S.Ito]

$B$5$"$b$H$5$s!"$3$s$K$A$O!#(B
$B%l%9$"$j$,$H$&$4$6$$$^$9!#(B

Post by T.Sawamoto
$B$+!)!JL5BL$,B?$$$G$9$,(B(^^;)$B!K(B
BitBlt(
hdcC, 0, 0, CXBMP, CYBMP,
hdcB, 0, 0,
SRCCOPY);
TransparentBlt(
hdcC, 0, 0, CXBMP, CYBMP,
hdcA, 0, 0, CXBMP, CYBMP,
colTransparent);
AlphaBlend(
hdcB, 0, 0, CXBMP, CYBMP,
hdcC, 0, 0, CXBMP, CYBMP,
blend);

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