A: demo default-hidden-window

example/default-hidden-window/default-hidden-window.go

+//----------------------------------------
+//
+// Copyright © yanghy. All Rights Reserved.
+//
+// Licensed under Apache License Version 2.0, January 2004
+//
+// https://www.apache.org/licenses/LICENSE-2.0
+//
+//----------------------------------------
+
+package main
+
+import (
+	"embed"
+	"github.com/energye/energy/v2/cef"
+	"github.com/energye/energy/v2/common"
+	"github.com/energye/golcl/lcl"
+	"time"
+)
+
+//go:embed resources
+var resources embed.FS
+
+func main() {
+	//全局初始化 每个应用都必须调用的
+	cef.GlobalInit(nil, &resources)
+	//创建应用
+	cefApp := cef.NewApplication()
+	//指定一个URL地址，或本地html文件目录
+	cef.BrowserWindow.Config.Url = "https://energy.yanghy.cn"
+	if common.IsLinux() && cefApp.IsUIGtk3() {
+		cef.BrowserWindow.Config.IconFS = "resources/icon.png"
+	} else {
+		cef.BrowserWindow.Config.IconFS = "resources/icon.ico"
+	}
+	// 默认隐藏窗口，CEF初始化时是在显示窗口时创建
+	// 1.默认不居中
+	// 2.窗口显示在屏幕之外，数值要大于窗口宽高
+	cef.BrowserWindow.Config.EnableCenterWindow = false
+	cef.BrowserWindow.Config.X = -1200
+	cef.BrowserWindow.Config.Y = -800
+	cef.BrowserWindow.SetBrowserInit(func(event *cef.BrowserEvent, window cef.IBrowserWindow) {
+		// chromium 创建完成之后再隐藏掉窗口
+		event.SetOnAfterCreated(func(sender lcl.IObject, browser *cef.ICefBrowser) bool {
+			window.RunOnMainThread(func() { // 在这UI线程执行
+				window.Hide()
+			})
+			// 5秒后显示窗口
+			go func() {
+				println("5秒后显示窗口")
+				time.Sleep(time.Second * 5)
+				window.RunOnMainThread(func() {
+					//在屏幕中间显示
+					window.SetCenterWindow(true)
+					window.Show()
+				})
+			}()
+			return false
+		})
+	})
+	//运行应用
+	cef.Run(cefApp)
+}