Re: Saving a Device context (DC) into a picture file

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Never mind, I found this
https://books.google.ca/books?id=3D9MS9BQAAQBAJ&pg=3DPA116&lpg=3DPA116&dq=
=3Dpython+device+context+save&source=3Dbl&ots=3DtYhl4K1K6J&sig=3DzgzJmOFeOI=
ZL2C5eGrZ-Oa_QRB4&hl=3Den&sa=3DX&ved=3D0ahUKEwijjIvX37jTAhVQ42MKHVIFCHEQ6AE=
IOjAE#v=3Donepage&q=3Dpython%20device%20context%20save&f=3Dfalse

thanks all

On Sat, Apr 22, 2017 at 11:52 AM, Michael C <[email protected]=
>
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 =3D ctypes.WinDLL('User32', use_last_error=3DTrue)
> GDI32 =3D ctypes.WinDLL('GDI32', use_last_error=3DTrue)
>
> # Set up Fx to be used.
> GetForegroundWindow =3D User32.GetForegroundWindow
> GetWindowDC =3D User32.GetWindowDC
> GetPixel =3D GDI32.GetPixel
> ReleaseDC =3D User32.ReleaseDC
>
>
> # main code
> foreground_window =3D GetForegroundWindow()
> dc =3D GetWindowDC(foreground_window)
>
> # set timer to see how fast it runs.
> t0 =3D time.clock()
>
> for i in range(50):
>     rgb =3D GetPixel(dc, 10, 10)
>     #print(rgb)
>     r =3D rgb & 0xff
>     g =3D (rgb >> 8) & 0xff
>     b =3D (rgb >> 16) & 0xff
> ##    print("RGB(%d, %d, %d)" % (r, g, b))
>
> print(time.clock() - t0)
> ReleaseDC(foreground_window, dc)
>
>

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<div dir=3D"ltr">Never mind, I found this<div><a href=3D"https://books.goog=
le.ca/books?id=3D9MS9BQAAQBAJ&amp;pg=3DPA116&amp;lpg=3DPA116&amp;dq=3Dpytho=
n+device+context+save&amp;source=3Dbl&amp;ots=3DtYhl4K1K6J&amp;sig=3DzgzJmO=
FeOIZL2C5eGrZ-Oa_QRB4&amp;hl=3Den&amp;sa=3DX&amp;ved=3D0ahUKEwijjIvX37jTAhV=
Q42MKHVIFCHEQ6AEIOjAE#v=3Donepage&amp;q=3Dpython%20device%20context%20save&=
amp;f=3Dfalse">https://books.google.ca/books?id=3D9MS9BQAAQBAJ&amp;pg=3DPA1=
16&amp;lpg=3DPA116&amp;dq=3Dpython+device+context+save&amp;source=3Dbl&amp;=
ots=3DtYhl4K1K6J&amp;sig=3DzgzJmOFeOIZL2C5eGrZ-Oa_QRB4&amp;hl=3Den&amp;sa=
=3DX&amp;ved=3D0ahUKEwijjIvX37jTAhVQ42MKHVIFCHEQ6AEIOjAE#v=3Donepage&amp;q=
=3Dpython%20device%20context%20save&amp;f=3Dfalse</a><br></div><div><br></d=
iv><div>thanks all</div></div><div class=3D"gmail_extra"><br><div class=3D"=
gmail_quote">On Sat, Apr 22, 2017 at 11:52 AM, Michael C <span dir=3D"ltr">=
&lt;<a href=3D"mailto:[email protected]" target=3D"_blank">mys=
[email protected]</a>&gt;</span> wrote:<br><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex"><div dir=3D"ltr">Quick Question:<div>I am using this code, and I h=
ave tried to find answers with google, and I have read through MSDN.</div><=
div><br></div><div>How do I save the DC into a png file or bmp?</div><div><=
br></div><div>thanks!</div><div><br></div><div><br></div><div><div>import t=
ime</div><div>import ctypes</div><div>##from ctypes import *</div><div>## I=
 don&#39;t like this. I like to import.</div><div><br></div><div>time.sleep=
(2)</div><div><br></div><div># Set up the User32 and GDI32</div><div>User32=
 =3D ctypes.WinDLL(&#39;User32&#39;, use_last_error=3DTrue)</div><div>GDI32=
 =3D ctypes.WinDLL(&#39;GDI32&#39;, use_last_error=3DTrue)</div><div><br></=
div><div># Set up Fx to be used.</div><div>GetForegroundWindow =3D User32.G=
etForegroundWindow</div><div>GetWindowDC =3D User32.GetWindowDC</div><div>G=
etPixel =3D GDI32.GetPixel</div><div>ReleaseDC =3D User32.ReleaseDC</div><d=
iv><br></div><div><br></div><div># main code</div><div>foreground_window =
=3D GetForegroundWindow()</div><div>dc =3D GetWindowDC(foreground_window)</=
div><div><br></div><div># set timer to see how fast it runs.</div><div>t0 =
=3D time.clock()</div><div><br></div><div>for i in range(50):</div><div>=C2=
=A0 =C2=A0 rgb =3D GetPixel(dc, 10, 10)</div><div>=C2=A0 =C2=A0 #print(rgb)=
</div><div>=C2=A0 =C2=A0 r =3D rgb &amp; 0xff</div><div>=C2=A0 =C2=A0 g =3D=
 (rgb &gt;&gt; 8) &amp; 0xff</div><div>=C2=A0 =C2=A0 b =3D (rgb &gt;&gt; 16=
) &amp; 0xff</div><div>## =C2=A0 =C2=A0print(&quot;RGB(%d, %d, %d)&quot; % =
(r, g, b))</div><div><br></div><div>print(time.clock() - t0)</div><div>Rele=
aseDC(foreground_window, dc)</div></div><div><br></div></div>
</blockquote></div><br></div>

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