def prepPrtTray():
# Constants from wingdi.h
DM_OUT_BUFFER = 0x02
DM_IN_BUFFER = 0x08
DM_IN_PROMPT = 0x04
DM_DEFAULT_SOURCE = 0x200
# Get a handle for the default printer
device_name = win32print.GetDefaultPrinter()
handle = win32print.OpenPrinter(device_name)
# Get the default properties for the printer
properties = win32print.GetPrinter(handle, 2)
devmode = properties['pDevMode']
# Print the default paper source (prints '7' for 'Automatically select')
print(devmode.DefaultSource)
# Change the default paper source to '4' for 'Manual feed'
devmode.DefaultSource = 4
devmode.Fields = devmode.Fields | DM_DEFAULT_SOURCE
# Write these changes back to the printer
win32print.DocumentProperties(None, handle, device_name, devmode, devmode, DM_IN_BUFFER | DM_OUT_BUFFER)
# Confirm the changes were updated
print(devmode.DefaultSource) # Aaargh! Prints '7' again!
# Start printing with the device
hdc = win32gui.CreateDC('', device_name, devmode)
win32print.StartDoc(hdc, ('Test', None, None, 0))
win32print.StartPage(hdc)
# ... GDI drawing commands ...
win32print.EndPage(hdc)
win32print.EndDoc(hdc)
dDC = win32gui.GetWindowDC(hwnd)
dcDC = win32gui.CreateCompatibleDC(dDC)
dcBM = win32gui.CreateCompatibleBitmap(dDC, desktopwidth, desktopheight)
win32gui.SelectObject(dcDC, dcBM)
win32gui.StretchBlt(dcDC, 0, 0, desktopwidth, desktopheight, dDC, 0, 0,
desktopwidth, desktopheight, win32con.SRCCOPY)
pcDC = win32gui.CreateCompatibleDC(pDC)
pcBM = win32gui.CreateCompatibleBitmap(pDC, printerwidth, printerheight)
win32gui.SelectObject(pcDC, pcBM)
win32gui.StretchBlt(pcDC, 0, 0, printerwidth, printerheight, dcDC, 0, 0,
desktopwidth, desktopheight, win32con.SRCCOPY)
win32print.StartDoc(pDC, ('desktop.bmp', None, None, 0))
win32print.StartPage(pDC)
win32gui.StretchBlt(pDC, 0, 0, int(printerwidth * .9), int(printerheight * .9),
pcDC, 0, 0, printerwidth, printerheight, win32con.SRCCOPY)
font = win32gui.LOGFONT()
font.lfHeight = int(printerheight / 20)
font.lfWidth = font.lfHeight
font.lfWeight = 150
font.lfItalic = 1
font.lfUnderline = 1
hf = win32gui.CreateFontIndirect(font)
win32gui.SelectObject(pDC, hf)
win32gui.SetBkMode(pDC, win32con.TRANSPARENT)
win32gui.SetTextColor(pDC, win32api.RGB(0, 255, 0))
win32gui.DrawText(
pDC, 'Printed by Python!', -1,