add RunNative on desktop.Window

driver/desktop/window.go

@@ -0,0 +1,8 @@
+package desktop
+
+// Window defines the desktop specific extensions to a fyne.Window.
+//
+// Since: 2.5
+type Window interface {
+	RunNative(func(ctx any) error) error
+}

driver/native.go

@@ -1,14 +1,24 @@
 package driver
 
-// AndroidContext is passed to the `RunNative` callback when it is executed on an Android device.
+// AndroidContext is passed to the `driver.RunNative` callback when it is executed on an Android device.
 // The VM, Env and Ctx pointers are reqiured to make various calls into JVM methods.
 //
 // Since: 2.3
 type AndroidContext struct {
 	VM, Env, Ctx uintptr
 }
 
-// UnknownContext is passed to the `RunNative` callback when it is executed on devices without special native context.
+// UnknownContext is passed to the RunNative callback when it is executed
+// on devices without special native context.
 //
 // Since: 2.3
 type UnknownContext struct{}
+
+// WindowsContext is passed to the `(desktop.Window).RunNative` callback
+// when it is executed on a Microsoft Windows desktop device.
+//
+// Since: 2.5
+type WindowsContext struct {
+	// HWND is the WinAPI HWND for the window.
+	HWND uintptr
+}

internal/driver/glfw/window_notwindows.go

@@ -4,6 +4,8 @@ package glfw
 
 import (
 	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/driver"
+	"fyne.io/fyne/v2/driver/desktop"
 	"fyne.io/fyne/v2/internal/scale"
 )
 
@@ -13,3 +15,17 @@ func (w *window) setDarkMode() {
 func (w *window) computeCanvasSize(width, height int) fyne.Size {
 	return fyne.NewSize(scale.ToFyneCoordinate(w.canvas, width), scale.ToFyneCoordinate(w.canvas, height))
 }
+
+// assert we are implementing desktop.Window
+var _ desktop.Window = (*window)(nil)
+
+func (w *window) RunNative(f func(any) error) error {
+	var err error
+	done := make(chan struct{})
+	runOnMain(func() {
+		err = f(driver.UnknownContext{})
+		close(done)
+	})
+	<-done
+	return err
+}

internal/driver/glfw/window_windows.go

@@ -6,6 +6,8 @@ import (
 	"unsafe"
 
 	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/driver"
+	"fyne.io/fyne/v2/driver/desktop"
 	"fyne.io/fyne/v2/internal/scale"
 
 	"golang.org/x/sys/windows/registry"
@@ -50,3 +52,19 @@ func (w *window) computeCanvasSize(width, height int) fyne.Size {
 	}
 	return fyne.NewSize(scale.ToFyneCoordinate(w.canvas, width), scale.ToFyneCoordinate(w.canvas, height))
 }
+
+// assert we are implementing desktop.Window
+var _ desktop.Window = (*window)(nil)
+
+func (w *window) RunNative(f func(any) error) error {
+	var err error
+	done := make(chan struct{})
+	runOnMain(func() {
+		err = f(driver.WindowsContext{
+			HWND: uintptr(unsafe.Pointer(w.view().GetWin32Window())),
+		})
+		close(done)
+	})
+	<-done
+	return err
+}