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How to get device context for com object?

Alex Martelli aleaxit at yahoo.com
Wed Feb 21 04:29:35 EST 2001 
"Walter Miller" <wmiller at mediaone.net> wrote in message
news:XuDk6.96953$Wq1.40024851 at nnrp5-w.sbc.net...
> That's exaclty what I'm trying to do but don't know how through python -
get
> the device context based on a window handle.  How do I call the GetDC api
> through python based on a given window handle?  Sorry, this probably
should
> have been my original question.

You need to have installed win32all (or the ActiveState build
of Python for Win32, that comes with win32all).  Then,

import win32gui
hdc = win32gui.GetDC(hwnd)

will set hdc to the (int) handle for the device context
corresponding to (the client areas of) the window whose
handle is in (int) hwnd.  Remember to also call
win32gui.ReleaseDC(hwnd, hdc) when you're done (you
might want to use a try/finally...).

(Similarly, you may use win32gui.GetWindowDC to get the
hdc for the whole window including non-client areas, &c).


Alex
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