RE: [wxPython-users] Grab screen in wxpython

[Gavana, Andrea]

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.

 

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Andrea Gavana (gav...@kpo.kz)

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---

From: Giovanni Porcari [mailto:giovanni...@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

[Giovanni Porcari]

[Porcari Giovanni]

Thank you Andrea

  :) 

G

Il giorno 08/nov/06, alle ore 14:38, Gavana, Andrea ha scritto:

[Josiah Carlson]

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