我也是刚刚使用walk这个组件，很多控件接口不熟悉，把我上次发的邮件群发器修改成图形界面的，线程发送邮件，gob库保存数据等。只提供作学习交流，仅供参考（界面很烂）。

接下来是main.go的代码：

//Multi-SendEmailprojectmain.go
packagemain

import(
"bufio"
"encoding/gob"
"errors"
"fmt"
"io"
"net/smtp"
"os"
"strconv"
"strings"
"time"
)

import(
"github.com/lxn/walk"
."github.com/lxn/walk/declarative"
)

typeShuJustruct{
Namestring
Pwdstring
Hoststring
Subjectstring
Bodystring
Sendstring
}

funcSendMail(user,password,host,to,subject,body,mailtypestring)error{
fmt.Println("Sendto"+to)
//fmt.Println(user,mailtype)
hp:=strings.Split(host,":")
auth:=smtp.PlainAuth("",user,hp[0])
varcontent_typestring
ifmailtype=="html"{
content_type="Content-Type:text/html;charset=UTF-8"
}else{
content_type="Content-Type:text/plain;charset=UTF-8"
}
body=strings.TrimSpace(body)
msg:=[]byte("To:"+to+"\r\nFrom:"+user+"<"+user+">\r\nSubject:"+subject+"\r\n"+content_type+"\r\n\r\n"+body)
send_to:=strings.Split(to,";")
err:=smtp.SendMail(host,auth,send_to,msg)
iferr!=nil{
fmt.Println(err.Error())
}
returnerr
}

funcreadLine2Array(filenamestring)([]string,error){
result:=make([]string,0)
file,err:=os.Open(filename)
iferr!=nil{
returnresult,errors.New("OpenfileFailed.")
}
deferfile.Close()
bf:=bufio.NewReader(file)
for{
line,isPrefix,err1:=bf.ReadLine()
iferr1!=nil{
iferr1!=io.EOF{
returnresult,errors.New("ReadLinenofinish")
}
break
}
ifisPrefix{
returnresult,errors.New("Lineistoolong")
}
str:=string(line)
result=append(result,str)
}
returnresult,nil
}

funcDelArrayVar(arr[]string,strstring)[]string{
str=strings.TrimSpace(str)
fori,v:=rangearr{
v=strings.TrimSpace(v)
ifv==str{
ifi==len(arr){
returnarr[0:i-1]
}
ifi==0{
returnarr[1:len(arr)]
}
a1:=arr[0:i]
a2:=arr[i+1:len(arr)]
returnappend(a1,a2...)
}
}
returnarr
}

funcLoadData(){
fmt.Println("LoadData")
file,err:=os.Open("data.dat")
deferfile.Close()
iferr!=nil{
fmt.Println(err.Error())
SJ.Name="用户名"
SJ.Pwd="用户密码"
SJ.Host="SMTP服务器:端口"
SJ.Subject="邮件主题"
SJ.Body="邮件内容"
SJ.Send="要发送的邮箱，每行一个"
return
}
dec:=gob.NewDecoder(file)
err2:=dec.Decode(&SJ)
iferr2!=nil{
fmt.Println(err2.Error())
SJ.Name="用户名"
SJ.Pwd="用户密码"
SJ.Host="SMTP服务器:端口"
SJ.Subject="邮件主题"
SJ.Body="邮件内容"
SJ.Send="要发送的邮箱，每行一个"
}
}

funcSaveData(){
fmt.Println("SaveData")
file,err:=os.Create("data.dat")
deferfile.Close()
iferr!=nil{
fmt.Println(err)
}
enc:=gob.NewEncoder(file)
err2:=enc.Encode(SJ)
iferr2!=nil{
fmt.Println(err2)
}
}

varSJShuJu
varruningbool
varchEndchanbool

funcmain(){
LoadData()
chEnd=make(chanbool)
varemails,msgBox*walk.TextEdit
varuser,subject*walk.LineEdit
varstartBtn*walk.PushButton
MainWindow{
Title:"邮件群发器By一曲忧伤",MinSize:Size{800,600},Layout:HBox{},Children:[]Widget{
TextEdit{AssignTo:&emails,Text:SJ.Send,ToolTipText:"待发送邮件列表，每行一个"},VSplitter{
Children:[]Widget{
LineEdit{AssignTo:&user,Text:SJ.Name,CueBanner:"请输入邮箱用户名"},LineEdit{AssignTo:&password,Text:SJ.Pwd,PasswordMode:true,CueBanner:"请输入邮箱登录密码"},LineEdit{AssignTo:&host,Text:SJ.Host,CueBanner:"SMTP服务器:端口"},LineEdit{AssignTo:&subject,Text:SJ.Subject,CueBanner:"请输入邮件主题……"},TextEdit{AssignTo:&body,Text:SJ.Body,ToolTipText:"请输入邮件内容",ColumnSpan:2},TextEdit{AssignTo:&msgBox,ReadOnly:true},PushButton{
AssignTo:&startBtn,Text:"开始群发",OnClicked:func(){
SJ.Name=user.Text()
SJ.Pwd=password.Text()
SJ.Host=host.Text()
SJ.Subject=subject.Text()
SJ.Body=body.Text()
SJ.Send=emails.Text()
SaveData()

ifruning==false{
runing=true
startBtn.SetText("停止发送")
gosendThread(msgBox,emails)
}else{
runing=false
startBtn.SetText("开始群发")
}
},},}.Run()
}

funcsendThread(msgBox,es*walk.TextEdit){
sendTo:=strings.Split(SJ.Send,"\r\n")
susscess:=0
count:=len(sendTo)
forindex,to:=rangesendTo{
ifruning==false{
break
}
msgBox.SetText("发送到"+to+"..."+strconv.Itoa(int((float32(index)/float32(count))*100))+"%")
err:=SendMail(SJ.Name,SJ.Pwd,SJ.Host,SJ.Subject,SJ.Body,"html")
iferr!=nil{
msgBox.AppendText("\r\n失败:"+err.Error()+"\r\n")
iferr.Error()=="550MailBoxnotfoundoraccessdenied"{
SJ.Send=strings.Join(DelArrayVar(strings.Split(SJ.Send,"\r\n"),to),"\r\n")
es.SetText(SJ.Send)
}
time.Sleep(1*time.Second)
continue
}else{
susscess++
msgBox.AppendText("\r\n发送成功!")
SJ.Send=strings.Join(DelArrayVar(strings.Split(SJ.Send,"\r\n")
es.SetText(SJ.Send)
}
time.Sleep(1*time.Second)
}
SaveData()
msgBox.SetText("停止发送!共成功"+strconv.Itoa(susscess)+"条\r\n")
}

然后是walk程序所用的main.manifest，完全照抄官方的，还没研究其中意思：

<?xmlversion="1.0"encoding="UTF-8"standalone="yes"?>
<assemblyxmlns="urn:schemas-microsoft-com:asm.v1"manifestVersion="1.0">
<assemblyIdentityversion="1.0.0.0"processorArchitecture="*"name="SomeFunkyNameHere"type="win32"/>
<dependency>
<dependentAssembly>
<assemblyIdentitytype="win32"name="Microsoft.Windows.Common-Controls"version="6.0.0.0"processorArchitecture="*"publicKeyToken="6595b64144ccf1df"language="*"/>
</dependentAssembly>
</dependency>
</assembly>

通过这个main.manifest执行（如果walk安装好了，应该就有这个命令）：

rsrc-manifestmain.manifest-orsrc.syso

上图是rsrc命令的参数列表，比如我为自已的程序加个ico图标：

rsrc-manifestmain.manifest–icoicon.ico-orsrc.syso

附上软件运行截图：

总结：只要熟悉这些非常强大的第三方库，Go应该也可以做出非常不错的图形应用程序，对于接触C、C++过晚的朋友来说非常合适。