def BestWindowFromPoint(point):
x, y = point
foundWindow = WindowFromPoint(POINT(x, y))
hWnds = GetWindowChildsList(GetAncestor(foundWindow, GA_ROOT), True)
if not hWnds:
return foundWindow
foundWindowArea = sys.maxint
rect = RECT()
clientPoint = POINT()
for hWnd in hWnds:
GetWindowRect(hWnd, byref(rect))
if (
x >= rect.left and
x <= rect.right and
y >= rect.top and
y <= rect.bottom
):
hdc = GetDC(hWnd)
clientPoint.x, clientPoint.y = x, y
ScreenToClient(hWnd, byref(clientPoint))
if PtVisible(hdc, clientPoint.x, clientPoint.y):
area = (rect.right - rect.left) * (rect.bottom - rect.top)
if area < foundWindowArea:
foundWindow = hWnd
foundWindowArea = area
ReleaseDC(hWnd, hdc)
return foundWindow
def HighlightWindow(hWnd):
"""
Draws an inverted rectangle around a window to inform the user about
the currently selected window.
"""
UpdateWindow(hWnd)
# Retrieve location of window on-screen.
rect = RECT()
GetWindowRect(hWnd, byref(rect))
# Get a device context that allows us to write anywhere within the window.
hdc = GetWindowDC(hWnd)
# Save the original device context attributes.
SaveDC(hdc)
# To guarantee that the frame will be visible, tell Windows to draw the
# frame using the inverse screen color.
SetROP2(hdc, R2_NOT)
# Create a pen that is three times the width of a nonsizeable border. The
# color will not be used to draw the frame, so its value could be
# anything. PS_INSIDEFRAME tells windows that the entire frame should be
# enclosed within the window.
hpen = CreatePen(PS_INSIDEFRAME, _H_BORDERWIDTH, _H_BORDERCOLOUR)
SelectObject(hdc, hpen)
# We must select a NULL brush so that the contents of the window will not
# be overwritten.
SelectObject(hdc, GetStockObject(NULL_BRUSH))
# Draw the frame. Because the device context is relative to the window,
# the top-left corner is (0, 0) and the lower right corner is (width of
# window, height of window).
Rectangle(hdc, 0, 0, rect.right - rect.left, rect.bottom - rect.top)
# Restore the original attributes and release the device context.
RestoreDC(hdc, -1)
ReleaseDC(hWnd, hdc)
# We can destroy the pen only AFTER we have restored the DC because the DC
# must have valid objects selected into it at all times.
DeleteObject(hpen)