[windows] Allow single-clicks on wails-draggable items (#2482)

* [runtime] Make it possible to restore old drag behaviour on windows with window.wails.flags.deferDragToMouseMove

* [runtime] Use deferDragToMouseMove as new default

This enhanced version should work well in all cases for Windows:
- No lag/delayed start of dragging
- Double-Clicks and Single-Click events still work in JavaScript on elements

* [docs] Add changelog

v2/internal/frontend/runtime/desktop/main.js

@@ -66,7 +66,7 @@ window.wails = {
         defaultCursor: null,
         borderThickness: 6,
         shouldDrag: false,
-        deferDragToMouseMove: false,
+        deferDragToMouseMove: true,
         cssDragProperty: "--wails-draggable",
         cssDragValue: "drag",
     }
@@ -152,10 +152,9 @@ function setResize(cursor) {
 
 window.addEventListener('mousemove', function (e) {
     if (window.wails.flags.shouldDrag) {
-        let mousePressed = e.buttons !== undefined ? e.buttons : e.which;
-        if(mousePressed <= 0) {
         window.wails.flags.shouldDrag = false;
-        } else {
+        let mousePressed = e.buttons !== undefined ? e.buttons : e.which;
+        if (mousePressed > 0) {
             window.WailsInvoke("drag");
             return;
         }

website/src/pages/changelog.mdx

@@ -14,6 +14,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+- Support single clicks on items with `--wails-draggable: drag` again on Windows. Changed by @stffabi in [PR](https://github.com/wailsapp/wails/pull/2482)
+
 ### Fixed
 - Fixed panic when using `wails dev` and the AssetServer tried to log to the logger. Fixed by @stffabi in [PR](https://github.com/wailsapp/wails/pull/2481) 
 - Fixed compatibility with WebView2 Runtime > `110.0.1587.69` which showed a `connection refused` html page before doing a reload of the frontend. Fixed by @stffabi in [PR](https://github.com/wailsapp/wails/pull/2496)