diff --git a/v3/pkg/application/window.go b/v3/pkg/application/window.go
new file mode 100644
index 000000000..11f495418
--- /dev/null
+++ b/v3/pkg/application/window.go
@@ -0,0 +1,78 @@
+package application
+
+import (
+	"github.com/wailsapp/wails/v3/pkg/events"
+)
+
+type Callback interface {
+	CallError(callID string, result string)
+	CallResponse(callID string, result string)
+	DialogError(dialogID string, result string)
+	DialogResponse(dialogID string, result string)
+}
+
+type Window interface {
+	Callback
+	AbsolutePosition() (int, int)
+	Center()
+	Close()
+	Destroy()
+	DisableSizeConstraints()
+	DispatchWailsEvent(event *WailsEvent)
+	EnableSizeConstraints()
+	Error(message string, args ...any)
+	ExecJS(callID, js string)
+	Focus()
+	ForceReload()
+	Fullscreen() Window
+	GetScreen() (*Screen, error)
+	GetZoom() float64
+	HandleDragAndDropMessage(filenames []string)
+	HandleMessage(message string)
+	HandleWindowEvent(id uint)
+	Height() int
+	Hide() Window
+	ID() uint
+	Info(message string, args ...any)
+	IsFullscreen() bool
+	IsMaximised() bool
+	IsMinimised() bool
+	HandleKeyEvent(acceleratorString string)
+	Maximise() Window
+	Minimise() Window
+	Name() string
+	On(eventType events.WindowEventType, callback func(event *WindowEvent)) func()
+	OpenContextMenu(data *ContextMenuData)
+	RegisterContextMenu(name string, menu *Menu)
+	RelativePosition() (int, int)
+	Reload()
+	Resizable() bool
+	Restore()
+	Run()
+	SetAbsolutePosition(x, y int)
+	SetAlwaysOnTop(b bool) Window
+	SetBackgroundColour(colour RGBA) Window
+	SetFrameless(frameless bool) Window
+	SetFullscreenButtonEnabled(enabled bool) Window
+	SetHTML(html string) Window
+	SetMaxSize(maxWidth, maxHeight int) Window
+	SetMinSize(minWidth, minHeight int) Window
+	SetRelativePosition(x, y int) Window
+	SetResizable(b bool) Window
+	SetSize(width, height int) Window
+	SetTitle(title string) Window
+	SetURL(s string) Window
+	SetZoom(magnification float64) Window
+	Show() Window
+	Size() (width int, height int)
+	ToggleDevTools()
+	ToggleFullscreen()
+	UnFullscreen()
+	UnMaximise()
+	UnMinimise()
+	Width() int
+	Zoom()
+	ZoomIn()
+	ZoomOut()
+	ZoomReset() Window
+}