python_printer_gui

Example Python program python_printer_gui.py Python version 3.x or newer. To check the Python version use:

python --version

Modules

• import win32api
• import win32print
• import traceback
• from tkinter.filedialog import askopenfilename
• from tkinter import *
• from tkinter import font # * doesn't import font or messagebox
• from tkinter import messagebox

Methods

• def font_size(fs):
• def sel_printer(*args):
• def sel_color(*args):
• def UploadAction(event=None):
• def PrintAction(event=None):
• def copies_increase(event=None):
• def copies_decrease(event=None):

Code

Python tkinter example

'''
 Project: curinga
 Time: 07/03/2020 01:37
 '''
import win32api
import win32print
import traceback

from tkinter.filedialog import askopenfilename
from tkinter import *
from tkinter import font # * doesn't import font or messagebox
from tkinter import messagebox

root = Tk()
root.title("Python Printer")
root.geometry("410x310")
root.resizable(False, False)
root.tk.call('encoding', 'system', 'utf-8')

def font_size(fs):
    return font.Font(family='Helvetica', size=fs, weight='bold')

# Add a grid
mainframe = Frame(root)
#mainframe.grid(column=0,row=0, sticky=(N,W,E,S) )
mainframe.grid(column=0,row=0, sticky=(N) )
mainframe.columnconfigure(0, weight = 1)
mainframe.rowconfigure(0, weight = 1)
mainframe.pack(pady = 10, padx = 0)

# Create a _printer variable
_printer = StringVar(root)
# Create a _color variable
_color = StringVar(root)
_filename = ""

# on change dropdown value
def sel_printer(*args):
    print( _printer.get() )
# link function to change dropdown
_printer.trace('w', sel_printer)

def sel_color(*args):
    print( _color.get() )
# link function to change dropdown
_color.trace('w', sel_color)

def UploadAction(event=None):
    global _filename
    _filename = filedialog.askopenfilename()
    #print('Selected:', _filename)

def PrintAction(event=None):

    PRINTER_DEFAULTS = {"DesiredAccess":win32print.PRINTER_ALL_ACCESS} 
    pHandle = win32print.OpenPrinter(_printer.get(), PRINTER_DEFAULTS)
    properties = win32print.GetPrinter(pHandle, 2)
    properties['pDevMode'].Color = 1 if str(_color.get()) == "Color" else 2
    properties['pDevMode'].Copies = 1
    win32print.SetPrinter(pHandle, 2, properties, 0)

    if not _filename:
        messagebox.showerror("Error", "No File Selected")
        return
    elif not _printer.get():
        messagebox.showerror("Error", "No Printer Selected")
        return

    try:
        #win32print.SetDefaultPrinter(_printer.get())
        win32api.ShellExecute(0, "print", _filename, None,  ".",  0)
        win32print.ClosePrinter(pHandle)
    except:
        pass
        messagebox.showerror("Error", "There was an error printing the file :(")

choices = [printer[2] for printer in win32print.EnumPrinters(2)]
_printer.set(win32print.GetDefaultPrinter()) # set the default option

popupMenu = OptionMenu(mainframe, _printer, *choices)
popupMenu['font'] = font_size(12)
Label(mainframe, text="SELECT PRINTER").grid(row = 1, column = 1)
popupMenu.grid(row = 2, column =1)

# Dictionary with options
choices = ["COLOR", "MONOCHROME"]
_color.set("COLOR") # set the default option

popupMenu2 = OptionMenu(mainframe, _color, *choices)
popupMenu2['font'] = font_size(12)
Label(mainframe, text="COLOR MODE").grid(row = 3, column = 1)
popupMenu2.grid(row = 4, column =1)

Label(mainframe, text="SELECT FILE").grid(row = 5, column = 1)
button = Button(mainframe, text=u"\uD83D\uDCC1" ' BROWSE', command=UploadAction)
button['font'] = font_size(12)
button.grid(row = 6, column =1)


_copies = IntVar()
_copies.set(1)

def copies_increase(event=None):
    _copies.set(_copies.get() + 1)

def copies_decrease(event=None):
    _copies.set(_copies.get() - 1)
    if _copies.get() < 1 :
        _copies.set(1)

Label(mainframe, textvariable=_copies).grid(columnspan=2)
button_frame = Frame(mainframe)
button_frame.grid(columnspan=2)


dec_button = Button(button_frame, text=u"\u2212", command=copies_decrease, fg="dark green", bg = "white", height=1, width=3 )
dec_button['font'] = font_size(10)

inc_button = Button(button_frame, text=u"\uFF0B", command=copies_increase, fg="dark green", bg = "white", height=1, width=3 )
inc_button['font'] = font_size(10)

button_frame.columnconfigure(0, weight=1)
button_frame.columnconfigure(1, weight=1)

dec_button.grid(row=0, column=0, sticky=W+E)
inc_button.grid(row=0, column=1, sticky=W+E)

Label(mainframe).grid(row = 10, column = 1)
p_button = Button(mainframe, text=u'\uD83D\uDDB6' + " PRINT", command=PrintAction, fg="dark green", bg = "white")
p_button['font'] = font_size(18)
p_button.grid(row = 11, column =1)

root.mainloop()

Useful Links

• Articles: https://python-commandments.org/
• Python shell: https://bsdnerds.org/learn-python/
• Tutorial: https://pythonprogramminglanguage.com/