### Install Dependencies

Source: https://context7.com/surajsinghbisht054/py-virtualkeyboard/llms.txt

Commands to install the required pyautogui library and tkinter toolkit on various operating systems.

```bash
# Install pyautogui for keyboard input simulation
pip install pyautogui

# tkinter is typically included with Python, but if needed:
# Ubuntu/Debian
sudo apt-get install python3-tk

# Fedora
sudo dnf install python3-tkinter

# macOS (usually pre-installed with Python)
brew install python-tk
```

--------------------------------

### Initialize Main Application

Source: https://context7.com/surajsinghbisht054/py-virtualkeyboard/llms.txt

Sets up the Tkinter window with borderless configuration, transparency, and the custom title bar. Includes the main loop execution.

```python
def main():
    # Create main window with custom title
    root = Tkinter.Tk(className=TOP_BAR_TITLE)
    k = Keyboard(root, bg=MAIN_FRAME_BACKGROUND)

    # Configure borderless window with transparency
    root.overrideredirect(True)  # Remove window decorations
    root.wait_visibility(root)
    root.wm_attributes('-alpha', TRANSPARENCY)  # Set transparency

    # Create custom title bar
    f = Tkinter.Frame(root)
    t_bar = Tkinter.Label(f, text=TOP_BAR_TITLE, bg=TOPBAR_BACKGROUND)
    t_bar.pack(side='left', expand="yes", fill="both")

    # Enable window dragging
    mechanism = top_moving_mechanism(root, t_bar)
    t_bar.bind("<B1-Motion>", mechanism.motion_activate)

    # Add close button
    Tkinter.Button(f, text="[X]", command=root.destroy).pack(side='right')

    f.pack(side='top', expand='yes', fill='both')
    k.pack(side='top')
    root.mainloop()

if __name__ == '__main__':
    main()
```

--------------------------------

### Launch Application

Source: https://context7.com/surajsinghbisht054/py-virtualkeyboard/llms.txt

Commands to execute the virtual keyboard script.

```bash
# Run the virtual keyboard
python "Python Virtual Keyboard/py-virtual-keyboard.py"

# Or with Python 3 explicitly
python3 "Python Virtual Keyboard/py-virtual-keyboard.py"
```

--------------------------------

### Configure Appearance

Source: https://context7.com/surajsinghbisht054/py-virtualkeyboard/llms.txt

Variables used to customize the visual style and transparency of the keyboard window.

```python
# ========== Configurations ====================
BUTTON_BACKGROUND       = "black"           # Background color of keyboard buttons
MAIN_FRAME_BACKGROUND   = "cornflowerblue"  # Main keyboard frame background
BUTTON_LOOK             = "flat"            # Button relief style: flat, groove, raised, ridge, solid, or sunken
TOP_BAR_TITLE           = "Python Virtual KeyBoard."  # Window title
TOPBAR_BACKGROUND       = "skyblue"         # Title bar background color
TRANSPARENCY            = 0.7               # Window transparency (0.0 to 1.0)
FONT_COLOR              = "white"           # Text color on buttons
```

--------------------------------

### Keyboard Class Implementation

Source: https://context7.com/surajsinghbisht054/py-virtualkeyboard/llms.txt

The main class that builds the GUI and handles key press simulation via pyautogui.

```python
import tkinter as Tkinter
import pyautogui

class Keyboard(Tkinter.Frame):
    def __init__(self, *args, **kwargs):
        Tkinter.Frame.__init__(self, *args, **kwargs)
        # Function For Creating Buttons
        self.create_frames_and_buttons()

    def create_frames_and_buttons(self):
        """
        Extracts data from the keyboard layout configuration
        and creates a well-organized keyboard GUI with sections
        for function keys, character keys, system keys, etc.
        """
        for key_section in keys:
            store_section = Tkinter.Frame(self)
            store_section.pack(side='left', expand='yes', fill='both',
                             padx=10, pady=10, ipadx=10, ipady=10)

            for layer_name, layer_properties, layer_keys in key_section:
                store_layer = Tkinter.LabelFrame(store_section)
                store_layer.pack(layer_properties)
                for key_bunch in layer_keys:
                    store_key_frame = Tkinter.Frame(store_layer)
                    store_key_frame.pack(side='top', expand='yes', fill='both')
                    for k in key_bunch:
                        k = k.capitalize()
                        if len(k) <= 3:
                            store_button = Tkinter.Button(store_key_frame, text=k, width=2, height=2)
                        else:
                            store_button = Tkinter.Button(store_key_frame, text=k.center(5, ' '), height=2)
                        store_button['command'] = lambda q=k.lower(): self.button_command(q)
                        store_button.pack(side='left', fill='both', expand='yes')

    def button_command(self, event):
        """Simulate a key press using pyautogui when button is clicked."""
        pyautogui.press(event)
```

--------------------------------

### Configure Keyboard Layout

Source: https://context7.com/surajsinghbisht054/py-virtualkeyboard/llms.txt

Defines the keyboard structure using a nested list of sections, layers, and rows. Each section includes layout names, pack arguments, and key definitions.

```python
keys = [
    # Section 1: Main keyboard area
    [
        [
            ("Function_Keys"),  # Layout name
            ({'side': 'top', 'expand': 'yes', 'fill': 'both'}),  # Pack arguments
            [
                ('esc', 'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12')
            ]
        ],
        [
            ("Character_Keys"),
            ({'side': 'top', 'expand': 'yes', 'fill': 'both'}),
            [
                ('`', ',', '.', '/', '-', '=', '\\', '[', ']', 'backspace'),
                ('~', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', '|'),
                ('tab', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '{', '}', ';', '\''),
                ('capslock', 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ':', '"', 'enter'),
                ('shift', 'z', 'x', 'c', 'v', 'b', 'n', 'm', '<', '>', '?', 'shift'),
                ('ctrl', 'win', 'alt', 'space  ', 'alt', 'win', '[=]', 'ctrl')
            ]
        ]
    ],
    # Section 2: System, Editing, and Navigation keys
    [
        [("System_Keys"), ({'side': 'top', 'expand': 'yes', 'fill': 'both'}),
         [('printscreen', 'scrolllock', 'pause')]],
        [("Editing_Keys"), ({'side': 'top', 'expand': 'yes', 'fill': 'both'}),
         [('insert', 'home', 'pageup'), ('delete', 'end', 'pagedown')]],
        [("Navigation_Keys"), ({'side': 'top', 'expand': 'yes', 'fill': 'both'}),
         [('up',), ('right', 'down', 'left')]]
    ],
    # Section 3: Numeric keypad
    [
        [("Numeric_Keys"), ({'side': 'top', 'expand': 'yes', 'fill': 'both'}),
         [('numlock', '/', '*'), ('7', '8', '9', '+'), ('4', '5', '6', '-'),
          ('1', '2', '3', '0'), ('.', 'enter')]]
    ]
]
```

--------------------------------

### Implement Window Dragging Mechanism

Source: https://context7.com/surajsinghbisht054/py-virtualkeyboard/llms.txt

Enables dragging of a borderless window by binding mouse motion events to the title bar. Requires the root window and a label widget for the title bar.

```python
class top_moving_mechanism:
    def __init__(self, root, label):
        self.root = root
        self.label = label

    def motion_activate(self, kwargs):
        """Move the window to follow mouse cursor position."""
        w, h = (self.root.winfo_reqwidth(), self.root.winfo_reqheight())
        (x, y) = (kwargs.x_root, kwargs.y_root)
        self.root.geometry("%dx%d+%d+%d" % (w, h, x, y))

# Usage in main():
mechanism = top_moving_mechanism(root, t_bar)
t_bar.bind("<B1-Motion>", mechanism.motion_activate)
```

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