[python-win32] How from Python do I call the win32 GDI function SetICMMode()

[m Lewis]

How, from Python win32 modules, do I call the GDI function SetICMMode() ? I
can't find which module it is in or which object it is supposed to be part
of, other than it probably should be in wingdi

My Python program uses the Python Pillow package to compose an image, save
it to a PDF file, and then it uses the *win32con, win32ui, win32print*
packages to send the image to the printer. My problem is that when I send
the image to the printer, the colors are different from when I print the
PDF file from a program like Adobe Acrobat, which renders the colors just
as I expect and need. For example, my Green RGB (0,128,0) on the Display,
and the PDF are good, but when printing from python to color is closer to
Yellowish-Olive. Apparently Adobe Acrobat is using Color Management
successfully.
 I print with code like this:




      devmode.ICMMethod = win32con.DMICMMETHOD_DEVICE # have device do
color management
        devmode.ICMIntent = win32con.DMICM_SATURATE
        devmode.Fields = devmode.Fields | win32con.DM_PAPERSIZE | win32con.
DM_ORIENTATION
        devmode.Fields = devmode.Fields | win32con.DM_PRINTQUALITY |
win32con.DM_MEDIATYPE | win32con.DM_YRESOLUTION # | win32con.DMPAPER_USER
        devmode.Fields = devmode.Fields | win32con.DM_ICMMETHOD
        devmode.Fields = devmode.Fields | win32con.DM_ICMINTENT
and later:
        result = win32print.DocumentProperties(None, handle, device_name,
devmode, devmode, win32con.DM_IN_PROMPT | win32con.DM_IN_BUFFER | win32con.
DM_OUT_BUFFER)
and later:         self.hDC.StartDoc ('my doc')
        self.hDC.StartPage ()
        dib = ImageWin.Dib (image)
        dib.expose(self.hDC.GetHandleAttrib())
        self.hDC.EndPage ()
        self.hDC.EndDoc ()

Setting up the devmode structure with ICCMode and ICCMethod helped to get
better printout than a dithered color, but still the color was wrong.

Microsoft *Image Color Management* (ICM) helps to ensure colors appear on a
printer as close as possible as they do on the display.

The wingdi function *SetICMMode()* is described here:
https://learn.microsoft.com/en-us/windows/win32/api/wingdi/nf-wingdi-seticmmode
It turns color management on or off in a device context, for example, the
printer. More information about routines for color management appears here:
https://learn.microsoft.com/en-us/windows/win32/wcs/basic-functions-for-use-within-a-device-context

The problem is there is very little to be found even in other programming
languages about SetICMMode() and nothing for Python win32con.
Here is a link to a C++ example
https://cpp.hotexamples.com/site/file?hash=0x9943faca5c529ef258b31b19e70a8cb36341839e74a62560916846e745948643&fullName=wine-master/dlls/gdi32/icm.c&project=r6144/wine

I also grep'ed through the win32 lib files in my Python installation but
could not find SetICMMode().

Thank you for any help
M Lewis
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