[V3] windows: fix html drag and drop (wailsapp#4259)

* fix(windows): disable external drag only when EnableDragAndDrop is set

* update changelog for html dnd fix

* remove redundant commented out code for windows dnd

* Fix changelog

---------

Co-authored-by: Lea Anthony <lea.anthony@gmail.com>
Co-authored-by: Atterpac <89053530+atterpac@users.noreply.github.com>

Author: 3 people

v3/UNRELEASED_CHANGELOG.md

@@ -23,6 +23,7 @@ After processing, the content will be moved to the main changelog and this file
 
 ## Fixed
 <!-- Bug fixes -->
+- Fixed HTML level drag and drop on Windows by [@mbaklor](https://github.com/mbaklor) in [#4259](https://github.com/wailsapp/wails/pull/4259)
 
 ## Deprecated
 <!-- Soon-to-be removed features -->

v3/pkg/application/webview_window_windows.go

@@ -1837,13 +1837,13 @@ func (w *windowsWebviewWindow) setupChromium() {
 		}
 	}
 
-	if chromium.HasCapability(edge.AllowExternalDrop) {
-		err := chromium.AllowExternalDrag(false)
-		if err != nil {
-			globalApplication.handleFatalError(err)
-		}
-	}
 	if w.parent.options.EnableDragAndDrop {
+		if chromium.HasCapability(edge.AllowExternalDrop) {
+			err := chromium.AllowExternalDrag(false)
+			if err != nil {
+				globalApplication.handleFatalError(err)
+			}
+		}
 		w.dropTarget = w32.NewDropTarget()
 		w.dropTarget.OnDrop = func(files []string) {
 			w.parent.emit(events.Windows.WindowDragDrop)
@@ -1902,17 +1902,6 @@ func (w *windowsWebviewWindow) setupChromium() {
 		}
 	}
 
-	// We will get round to this
-	//if chromium.HasCapability(edge.AllowExternalDrop) {
-	//	err := chromium.AllowExternalDrag(w.parent.options.EnableDragAndDrop)
-	//	if err != nil {
-	//		globalApplication.handleFatalError(err)
-	//	}
-	//	if w.parent.options.EnableDragAndDrop {
-	//		chromium.MessageWithAdditionalObjectsCallback = w.processMessageWithAdditionalObjects
-	//	}
-	//}
-
 	chromium.Resize()
 	settings, err := chromium.GetSettings()
 	if err != nil {