[windows] Support drawing a frame for frameless to support hiding the titlebar

v2/internal/frontend/desktop/windows/window.go

@@ -34,6 +34,9 @@ func NewWindow(parent winc.Controller, appoptions *options.App) *Window {
 	var dwStyle = w32.WS_OVERLAPPEDWINDOW
 	if appoptions.Frameless {
 		dwStyle = w32.WS_POPUP
+		if winoptions := appoptions.Windows; winoptions != nil && winoptions.EnableFramelessBorder {
+			dwStyle |= w32.WS_BORDER
+		}
 	}
 
 	winc.RegClassOnlyOnce("wailsWindow")

v2/pkg/options/windows/windows.go

@@ -5,4 +5,7 @@ type Options struct {
 	WebviewIsTransparent bool
 	WindowIsTranslucent  bool
 	DisableWindowIcon    bool
+
+	// Draw a border around the window, even if the window is frameless
+	EnableFramelessBorder bool
 }

website/docs/reference/options.mdx

@@ -44,6 +44,7 @@ func main() {
             WebviewIsTransparent:  false,
             WindowIsTranslucent:   false,
             DisableWindowIcon:     false,
+            EnableFramelessBorder: false,
         },
         Mac: &mac.Options{
             TitleBar: &mac.TitleBar{
@@ -316,8 +317,16 @@ Name: DisableWindowIcon
 
 Type: bool
 
-Setting this to true will remove the icon in the top left corner of the title bar.
+Setting this to `true` will remove the icon in the top left corner of the title bar.
 
+### EnableFramelessBorder
+
+Name: EnableFramelessBorder
+
+Type: bool
+
+Setting this to `true` will add a border around the window if [Frameless](#Frameless) has been activated.
+This allows hiding the title bar but still having a border around the window.
 
 ## Mac Specific Options
 

website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/reference/options.mdx

@@ -43,6 +43,7 @@ func main() {
             WebviewIsTransparent:  false,
             WindowIsTranslucent:   false,
             DisableWindowIcon:     false,
+            EnableFramelessBorder: false,
         },
         Mac: &mac.Options{
             TitleBar: &mac.TitleBar{