Hi all
Is there a way to grab an image from the screen using wxpython?
I know that it could be done using PIL ImageGrab.grab(bbox) => image but unfortunately it is only for windows.
TIA
G
Hi Giovanni,
Is there a way to grab an image from the screen using wxpython?
If you mean taking a screenshot of one widget or one part of the application, you may do something like:
def TakeScreenShot(rect):
“”" Takes a screenshot of the screen at give pos & size (rect). “”"
#Create a DC for the whole screen area
dcScreen = wx.ScreenDC()
#Create a Bitmap that will later on hold the screenshot image
#Note that the Bitmap must have a size big enough to hold the screenshot
#-1 means using the current default colour depth
bmp = wx.EmptyBitmap(rect.width, rect.height)
#Create a memory DC that will be used for actually taking the screenshot
memDC = wx.MemoryDC()
#Tell the memory DC to use our Bitmap
#all drawing action on the memory DC will go to the Bitmap now
memDC.SelectObject(bmp)
#Blit (in this case copy) the actual screen on the memory DC
#and thus the Bitmap
memDC.Blit( 0, #Copy to this X coordinate
0, #Copy to this Y coordinate
rect.width, #Copy this width
rect.height, #Copy this height
dcScreen, #From where do we copy?
rect.x, #What's the X offset in the original DC?
rect.y #What's the Y offset in the original DC?
)
#Select the Bitmap out of the memory DC by selecting a new
#uninitialized Bitmap
memDC.SelectObject(wx.NullBitmap)
return bmp
HTH.
Andrea.
···
Andrea Gavana
(gavana@kpo.kz)
Reservoir Engineer
KPDL
4, Millbank
SW1P 3JA London
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From: Giovanni Porcari [mailto:giovanni.porcari@gmail.com]
Sent: 08 November 2006 13:31
To: wxpython-users
Subject: [wxPython-users] Grab screen in wxpython
Hi all
Is there a way to grab an image from the screen using wxpython?
I know that it could be done using PIL ImageGrab.grab(bbox) => image but unfortunately it is only for windows.TIA
G
Thank you Andrea
G
···
Il giorno 08/nov/06, alle ore 14:38, Gavana, Andrea ha scritto:
Hi Giovanni,
Is there a way to grab an image from the screen using wxpython?
If you mean taking a screenshot of one widget or one part of the application, you may do something like:
def TakeScreenShot(rect):
“”" Takes a screenshot of the screen at give pos & size (rect). “”"
#Create a DC for the whole screen area dcScreen = wx.ScreenDC()
#Create a Bitmap that will later on hold the screenshot image #Note that the Bitmap must have a size big enough to hold the screenshot #-1 means using the current default colour depth bmp = wx.EmptyBitmap(rect.width, rect.height)
#Create a memory DC that will be used for actually taking the screenshot memDC = wx.MemoryDC()
#Tell the memory DC to use our Bitmap #all drawing action on the memory DC will go to the Bitmap now memDC.SelectObject(bmp)
#Blit (in this case copy) the actual screen on the memory DC #and thus the Bitmap memDC.Blit( 0, #Copy to this X coordinate 0, #Copy to this Y coordinate rect.width, #Copy this width rect.height, #Copy this height dcScreen, #From where do we copy? rect.x, #What's the X offset in the original DC? rect.y #What's the Y offset in the original DC? )
#Select the Bitmap out of the memory DC by selecting a new #uninitialized Bitmap memDC.SelectObject(wx.NullBitmap)
return bmp
That is very nifty.
If one uses the print screen button on Windows, then one can also use
something like the following...
def GetClipboardImage():
success = False
do = wx.BitmapDataObject()
if wx.TheClipboard.Open():
success = wx.TheClipboard.GetData(do)
wx.TheClipboard.Close()
if success:
return do.GetBitmap()
return None
- Josiah
···
"Gavana, Andrea" <gavana@kpo.kz> wrote:
Hi Giovanni,
> Is there a way to grab an image from the screen using wxpython?
If you mean taking a screenshot of one widget or one part of the application, you may do something like:
def TakeScreenShot(rect):
""" Takes a screenshot of the screen at give pos & size (rect). """#Create a DC for the whole screen area
dcScreen = wx.ScreenDC()#Create a Bitmap that will later on hold the screenshot image
#Note that the Bitmap must have a size big enough to hold the screenshot
#-1 means using the current default colour depth
bmp = wx.EmptyBitmap(rect.width, rect.height)#Create a memory DC that will be used for actually taking the screenshot
memDC = wx.MemoryDC()#Tell the memory DC to use our Bitmap
#all drawing action on the memory DC will go to the Bitmap now
memDC.SelectObject(bmp)#Blit (in this case copy) the actual screen on the memory DC
#and thus the Bitmap
memDC.Blit( 0, #Copy to this X coordinate
0, #Copy to this Y coordinate
rect.width, #Copy this width
rect.height, #Copy this height
dcScreen, #From where do we copy?
rect.x, #What's the X offset in the original DC?
rect.y #What's the Y offset in the original DC?
)#Select the Bitmap out of the memory DC by selecting a new
#uninitialized Bitmap
memDC.SelectObject(wx.NullBitmap)return bmp