Additional options

[kienns1996]

is it possible to add option between 'user32\PrintWindow' and 'BitBlt' when creating bitmap in from_window()? BitBlt is about 10 times faster than PrintWindow. Additionally, CreateCompatibleDC is also about 10% faster than CreateDIBSection

[iseahound]

Addressing only BitBlt:

I've offfered an option to use the format ImagePutWindow([0,0,,, "ahk_class notepad"]) which exposes the x,y,w,h parameters. Does this help?

[kienns1996]

I mean this, is there another way to create a BitmapBuffer to use PixelSearch from a hwnd without going through it?

; Print the window onto the hBitmap using an undocumented flag. https://stackoverflow.com/a/40042587
DllCall("user32\PrintWindow", "ptr", image, "ptr", hdc, "uint", 0x3) ; PW_RENDERFULLCONTENT | PW_CLIENTONLY
; Additional info on how this is implemented: https://www.reddit.com/r/windows/comments/8ffr56/altprintscreen/

[iseahound]

Are you asking me to change the syntax? I'm not sure what you're asking.

pic := ImagePutBuffer({screenshot: "A"})