Examples

The package includes a variety of examples in the examples subdirectory, showcasing different aspects of invoking Windows APIs.

These examples cover:

• Invoking C-style APIs, including creating structs and managing memory
• Building classic (Win32) desktop UIs
• Using callback functions with Win32 APIs
• Invoking COM classes (both IUnknown and IDispatch interface types)
• Integrating Windows code with Flutter

For practical examples of using package:win32 in real-world applications, visit pub.dev to explore packages that depend on it.

Windows system APIs (kernel32)

Example	Description
manifest	Demonstrates the use of app manifests for compiled apps
service_manager_cli	Demonstrates managing Windows services
credentials.dart	Adds a credential to the store and retrieves it
dump.dart	Use debugger libraries to print DLL exported functions
dynamic_load.dart	Demonstrate loading a DLL and calling it at runtime
filever.dart	Getting file version information from the file resource
modules.dart	Enumerates all loaded modules on the current system
pipe.dart	Shows use of named pipes for interprocess communication
registry.dart	Demonstrates querying the registry for values
vt.dart	Shows virtual terminal sequences
wsl.dart	Retrieve information from a WSL instance through APIs

Accessing local hardware and devices

Example	Description
bluetooth.dart	Demonstrate enumerating Bluetooth devices
bluetoothle.dart	Enumerate Bluetooth LE (Low Energy) devices
devices.dart	Uses volume management APIs to list all disk devices
diskinfo.dart	Use DeviceIoControl API for direct device operations
gamepad.dart	Show which gamepads are connected
midi.dart	Demonstrates MIDI playback using MCI commands
monitor.dart	Uses DDC and monitor-config API to get monitor caps
play_sound.dart	Plays a WAV file through the Windows PlaySound API
printer_list.dart	Enumerate available printers on the system
printer_raw.dart	Sends RAW data directly to a Windows Printer
serial.dart	Demonstrates serial port management
setupapi.dart	Show using setup APIs to retrieve device interfaces
speech.dart	Use Windows speech engine for text-to-speech
speech_voice.dart	Use ISpeechVoice for text-to-speech
sysinfo.dart	Examples of getting device information from native C APIs
wasapi.dart	Demonstrates sound generation with WASAPI library

Windows shell manipulation (shell32)

Example	Description
shell_notify_icon	Demonstrates adding an icon to the system tray
knownfolder.dart	Retrieves known folders from the current user profile
magnifier.dart	Provides a magnifier window using the Magnification API
recycle_bin.dart	Queries the recycle bin and adds an item to it
screenshot.dart	Takes snapshots of all connected displays
shortcut.dart	Demonstrates creating a Windows shell link
wallpaper.dart	Shows what wallpaper and background color are set

Win32-style UI development (user32, gdi32, commdlg32)

Example	Description
notepad	Lightweight replica of the Windows notepad applet
tetris	Port of an open-source Tetris game to Dart
hello.dart	Basic Petzoldian "hello world" Win32 app
msgbox.dart	Demonstrates a MessageBox from the console
commdlg.dart	Demonstrates using the color chooser common dialog box
customtitlebar.dart	Demonstrates creation of owner-draw title bar region
customwin.dart	Displays a non-rectangular window
dialogbox.dart	Create a custom dialog box in code
dialogshow.dart	Creates a common item dialog (file picker) using COM
paint.dart	Demonstrates simple GDI drawing and min/max window sizing
scroll.dart	Example of horizontal and vertical scrolling text window
sendinput.dart	Sends keyboard and mouse input to another window
snake.dart	Snake game using various GDI features
taskdialog.dart	Demonstrates using modern task dialog boxes
usb_drive.dart	Monitors USB drive insertion and removal events
window.dart	Enumerates open windows and basic window manipulation

COM APIs

Example	Description
com_context.dart	Shows interaction of Dart isolates and COM apartments
com_demo.dart	Demonstrates COM object creation, casting, and calling methods
dispatcher.dart	Demonstrates calling methods on COM automation objects with Dispatcher
com_interop	Demonstrates accessing .NET components through COM interop
guid.dart	Creates a globally unique identifier (GUID)
uiautomation.dart	Demonstrates calling Windows UI Automation APIs
winhttp.dart	Demonstrates using WinHTTP APIs to make HTTP requests
wmi_perf.dart	Uses WMI to retrieve performance counters
wmi_wql.dart	Uses WMI to retrieve information using WQL

Flutter

Example	Description
explorer	Demonstrates calling Win32 file picker APIs
task_manager	Demonstrates managing running processes