[转] 自定义取色函数

AHK官网中文论坛挖来的获取颜色函数：

GetColor() ;鼠标下颜色
GetColor(7,7) ;指定座标的颜色
GetColor(7,7,7,7) ;指定范围，将返回以高度为轴的二级对象。

克服内置取色命令的以下缺点：
在毛玻璃下延迟严重。
批量取色效率低下。

GetColor(x:="",y:="",w:=1,h:=1){ ;取色
static pt
pt?"":(DllCall("GetModuleHandle","str","gdiplus","UPtr"),VarSetCapacity(i,A_PtrSize=8?24:16,0),i:=Chr(1)
,DllCall("gdiplus\GdiplusStartup","UPtr*",pt,"UPtr",&i,"UPtr",0))
,(x="")?GetCursorPos(x,y):""
,d:=DllCall("CreateCompatibleDC","Uint",0),VarSetCapacity(b,40,0),NumPut(w,b,4,"uint")
,NumPut(h,b,8,"uint"),NumPut(40,b,0,"uint"),NumPut(1,b,12,"ushort"),NumPut(0,b,16,"uInt"),NumPut(32,b,14,"ushort")
,m:=DllCall("CreateDIBSection","UPtr",d,"UPtr",&b,"uint",0,"UPtr*",0,"UPtr",0,"uint",0,"UPtr")
,o:=DllCall("SelectObject","UPtr",d,"UPtr",m)
,DllCall("BitBlt","UPtr",d,"int",0,"int",0,"int",w,"int",h,"UPtr",i:=DllCall("GetDC","UPtr",0),"int",x,"int",y,"uint",0x00CC0020)
,DllCall("ReleaseDC","UPtr",0,"UPtr",i)
,DllCall("gdiplus\GdipCreateBitmapFromHBITMAP","UPtr",m,"UPtr",Palette,"UPtr*",p)
,DllCall("SelectObject","UPtr",d,"UPtr",o),DllCall("DeleteObject","UPtr",m)
,DllCall("DeleteDC","UPtr",i),DllCall("DeleteDC","UPtr",d),VarSetCapacity(t,16)
,NumPut(0,t,0,"uint"),NumPut(0,t,4,"uint"),NumPut(w,t,8,"uint"),NumPut(h,t,12,"uint")
,VarSetCapacity(b,16+2*A_PtrSize,0),DllCall("Gdiplus\GdipBitmapLockBits","UPtr",p,"UPtr",&t,"uint",3,"int",0x26200a,"UPtr",&b)
,e:= NumGet(b,8,"Int"),u:=NumGet(b,16,"UPtr"),r:=A_FormatInteger
SetFormat,IntegerFast,hex
if (w>1 or h>1)
{
f:=[]
Loop,%h%
{
f[A_Index]:=j:=[],s:=(A_Index-1)*e
Loop,%w%
j[A_Index]:=NumGet(u+0,((A_Index-1)*4)+s,"UInt")  & 0x00ffffff ""
}
}
else f:=NumGet(u+0,0,"UInt") & 0x00ffffff  ""
SetFormat,IntegerFast,%r%
DllCall("Gdiplus\GdipBitmapUnlockBits","UPtr",p,"UPtr",0)
DllCall("gdiplus\GdipDisposeImage", "uint", p)
return f
}

原地址：http://ahkscript.org/boards/viewtopic.php?f=28&t=5023