go-gtk3开发之垂直布局控件(14)

案例说明

创建垂直布局，新版不再支持GtkHBox/GtkVBox。

demo.go

package main

import (
	"fmt"
	"github.com/gotk3/gotk3/glib"
	"github.com/gotk3/gotk3/gtk"
	"log"
	"os"
	"reflect"
)

// unrecognized class name 'GtkVBox'
// 新版不再支持GtkHBox/GtkVBox
// glade3 3.8 编辑器太老了， 使用glade-3.14

func main() {
	const appId = "com.nayoso.example"
	app, _ := gtk.ApplicationNew(appId, glib.APPLICATION_FLAGS_NONE)
	_, err := app.Connect("activate", func() {
		createWindow(app)
	})
	if err != nil {
		log.Fatal(err)
	}

	app.Run(os.Args)
}

func createWindow(application *gtk.Application) {
	// 从文件中创建Builder
	builder, err := gtk.BuilderNewFromFile("12_垂直布局/builder.ui")
	if err != nil {
		log.Fatal(err)
	}

	// 获取window窗口
	winObj, _ := builder.GetObject("window1")
	window := winObj.(*gtk.Window)
	application.AddWindow(window)

	// window 窗口设置
	window.SetSizeRequest(300, 240)                //设置窗口大小
	window.SetTitle("hello go")                    //设置标题
	window.SetResizable(false)                     //设置不可伸缩
	window.SetPosition(gtk.WIN_POS_CENTER)         //设置居中显示
	err = window.SetIconFromFile("images/app.ico") //设置icon
	if err != nil {
		log.Fatal(err)
	}

	//获取vbox控件
	vboxObj, err := builder.GetObject("box1")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println("vboxObj", reflect.TypeOf(vboxObj))

	vbox := vboxObj.(*gtk.Box)
	//gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 3)
	button, _ := gtk.ButtonNewWithLabel("新按钮") //新建按钮
	vbox.Add(button)                           //按钮添加到布局中

	// 显示所有界面
	window.ShowAll()
}

/*
信号标识	触发条件
“clicked”	按下按钮时触发
“pressed”	按下按钮时触发
“released”	释放按钮时触发
*/

builder.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <!-- interface-requires gtk+ 3.0 -->
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <child>
      <object class="GtkBox" id="box1">
        <property name="visible">True</property>
        <property name="can_focus">False</property>
        <property name="orientation">vertical</property>
        <property name="homogeneous">True</property>
        <child>
          <object class="GtkButton" id="button1">
            <property name="label" translatable="yes">button</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="receives_default">True</property>
          </object>
          <packing>
            <property name="expand">False</property>
            <property name="fill">True</property>
            <property name="position">0</property>
          </packing>
        </child>
        <child>
          <object class="GtkButton" id="button2">
            <property name="label" translatable="yes">button</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="receives_default">True</property>
          </object>
          <packing>
            <property name="expand">False</property>
            <property name="fill">True</property>
            <property name="position">1</property>
          </packing>
        </child>
        <child>
          <placeholder/>
        </child>
      </object>
    </child>
  </object>
</interface>