"Rune Strand" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
>
> Is it possible by use of pyWin32 or ctypes to make a screen capture of
> an inactive, or a hidden window if the hwnd/WindowName/ClassName is
> known? I've seen dedicated screen capture software do this. While
> PIL.ImageGrab.grab() is excellent, it will only capture the foreground
> of the desktop. I've tried for hours, but I soon get helplessly lost in
> the labyrinths of the Win32API.
>
This will restore a minimized window, bring it to the top and save a bmp.
import time
import win32gui, win32ui, win32con, win32api
def window_capture(window_title):
hwnd=win32gui.FindWindow(None, window_title)
if not hwnd:
raise 'Window not found'
print hwnd
win32gui.ShowWindow(hwnd,win32con.SW_RESTORE)
win32gui.SetForegroundWindow(hwnd)
time.sleep(0.1)
l,t,r,b=win32gui.GetWindowRect(hwnd)
h=b-t
w=r-l
hwndDC = win32gui.GetWindowDC(hwnd)
mfcDC=win32ui.CreateDCFromHandle(hwndDC)
saveDC=mfcDC.CreateCompatibleDC()
saveBitMap = win32ui.CreateBitmap()
saveBitMap.CreateCompatibleBitmap(mfcDC, w, h)
saveDC.SelectObject(saveBitMap)
saveDC.BitBlt((0,0),(w, h) , mfcDC, (0,0), win32con.SRCCOPY)
temp_dir=win32api.GetTempPath()
bmpname=win32api.GetTempFileName(temp_dir,'wc')[0]+'.bmp'
saveBitMap.SaveBitmapFile(saveDC, bmpname)
return bmpname
Roger
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