Re: [ctypes-users] Saving a Device context (DC) into a picture file

[Michael C <mys...@gm...>]

Never mind, I found this
https://books.google.ca/books?id=9MS9BQAAQBAJ&pg=PA116&lpg=PA116&dq=python+device+context+save&source=bl&ots=tYhl4K1K6J&sig=zgzJmOFeOIZL2C5eGrZ-Oa_QRB4&hl=en&sa=X&ved=0ahUKEwijjIvX37jTAhVQ42MKHVIFCHEQ6AEIOjAE#v=onepage&q=python%20device%20context%20save&f=false

thanks all

On Sat, Apr 22, 2017 at 11:52 AM, Michael C <mys...@gm...>
wrote:

> Quick Question:
> I am using this code, and I have tried to find answers with google, and I
> have read through MSDN.
>
> How do I save the DC into a png file or bmp?
>
> thanks!
>
>
> import time
> import ctypes
> ##from ctypes import *
> ## I don't like this. I like to import.
>
> time.sleep(2)
>
> # Set up the User32 and GDI32
> User32 = ctypes.WinDLL('User32', use_last_error=True)
> GDI32 = ctypes.WinDLL('GDI32', use_last_error=True)
>
> # Set up Fx to be used.
> GetForegroundWindow = User32.GetForegroundWindow
> GetWindowDC = User32.GetWindowDC
> GetPixel = GDI32.GetPixel
> ReleaseDC = User32.ReleaseDC
>
>
> # main code
> foreground_window = GetForegroundWindow()
> dc = GetWindowDC(foreground_window)
>
> # set timer to see how fast it runs.
> t0 = time.clock()
>
> for i in range(50):
>     rgb = GetPixel(dc, 10, 10)
>     #print(rgb)
>     r = rgb & 0xff
>     g = (rgb >> 8) & 0xff
>     b = (rgb >> 16) & 0xff
> ##    print("RGB(%d, %d, %d)" % (r, g, b))
>
> print(time.clock() - t0)
> ReleaseDC(foreground_window, dc)
>
>