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POsaving bitmap data to a file
 

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    <p>i'm trying to take screenshot with python using only ctypes.</p> <p>i get stuck after the bitblt. do anyone have a code which saves the bitmap object into a file with ctypes in python?</p> <p>this is the code i wrote so far:</p> <pre><code>import ctypes from ctypes import * #Constants SM_CXSCREEN = 0 SM_CYSCREEN = 1 SRCCOPY = 0xCC0020 user32 = ctypes.windll.user32 gdi32 = ctypes.windll.gdi32 class BITMAPINFOHEADER(ctypes.Structure): _fields_ = [ ('biSize', ctypes.c_uint32), ('biWidth', ctypes.c_int), ('biHeight', ctypes.c_int), ('biPlanes', ctypes.c_short), ('biBitCount', ctypes.c_short), ('biCompression', ctypes.c_uint32), ('biSizeImage', ctypes.c_uint32), ('biXPelsPerMeter', ctypes.c_long), ('biYPelsPerMeter', ctypes.c_long), ('biClrUsed', ctypes.c_uint32), ('biClrImportant', ctypes.c_uint32) ] class BITMAPINFO(ctypes.Structure): _fields_ = [ ('bmiHeader', BITMAPINFOHEADER), ('bmiColors', ctypes.c_ulong * 3) ] hDesktopWnd = user32.GetDesktopWindow() WinDC = user32.GetDC (hDesktopWnd) CopyDC = gdi32.CreateCompatibleDC (WinDC) hBitmap = gdi32.CreateCompatibleBitmap (WinDC, 1000, 1000) gdi32.SelectObject (CopyDC, hBitmap) gdi32.BitBlt(CopyDC, 0,0, 1000, 1000, WinDC, 0, 0, SRCCOPY); </code></pre> <p>i know that the next step will be somthing like:</p> <pre><code>lpbi = BITMAPINFO() ctypes.memset(ctypes.byref(lpbi), 0x00, ctypes.sizeof(lpbi)) lpbi.bmiHeader.biSize = ctypes.sizeof(BITMAPINFOHEADER) gdi32.SelectObject (CopyDC, hBitmap) ... </code></pre> <p>but it sucked and didn't work. please help.</p>
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    1. COhttp://stackoverflow.com/a/4589290/1052325
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    2. COIs it possible for you to use PIL?
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    3. COnope... only allowed to import ctypes
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