使用 github.com/lxn/walk 写一个类似记事本打开文件的操作 =========================================================== editor.go ===========================================================
package main import ( "log" "editor/Abouter" //关于按钮相关 "editor/Opener" //打开按钮相关 "github.com/lxn/walk" . "github.com/lxn/walk/declarative" ) func main() { if _,err:= (MainWindow{ AssignTo: &Opener.Mw.MainWindow, Title: "NoteBook", MenuItems: []MenuItem{ Menu{ Text: "&File", Items: []MenuItem{ Action{ Text: "&NewFile", }, Action{ AssignTo: &openAction, Text: "&Open", //Image: "/img/open.png", OnTriggered: Opener.Mw.OpenAction_Triggered, }, Separator{}, Action{ Text: "Exit", OnTriggered: func() { Opener.Mw.Close() }, }, }, }, Menu{ Text: "&Help", Items: []MenuItem{ Action{ Text: "About", OnTriggered: Abouter.AboutAction_Triggered, }, }, }, }, MinSize: Size{320, 240}, Size: Size{800, 600}, Layout: VBox{MarginsZero: true}, Children: []Widget{ HSplitter{ Children: []Widget{ TextEdit{ AssignTo: &Opener.Te, HScroll: true, VScroll: true, }, }, }, }, }.Run()); err != nil { log.Fatal(err) } }=========================================================== Opener.go ===========================================================
package Opener import ( "encoding/csv" "log" "os" "github.com/axgle/mahonia" "github.com/golang/glog" "github.com/lxn/walk" ) var Te*walk.TextEdit var Mw=new(MyMainWindow) type MyMainWindow struct { *walk.MainWindow prevFilePath string } func (Mw *MyMainWindow)OpenAction_Triggered() { err := Te.SetText("")// 以便于清空文本框原有的内容 if err !=nil { glog.Error("SetText() clear content :", err) } if err:= Mw.OpenFile(); err!=nil { log.Print(err) } //max := te.MaxLength() //fmt.Println("max = ", max) } func GetCSV(csvPathstring) [][]string { file, err:= os.Open(csvPath) if err !=nil { glog.Error("Error when open file in GetCSV():", err) return nil } defer file.Close() decoder := mahonia.NewDecoder("gbk")// 把原来ANSI格式的文本文件里的字符，用gbk进行解码。 //r := csv.NewReader(file) r := csv.NewReader(decoder.NewReader(file))// 这样，最终返回的字符串就是utf-8了。（go只认utf8） res, err:= r.ReadAll() if err !=nil { glog.Error("Error when read csv in GetCSV():", err) return nil } return res } func (Mw *MyMainWindow)OpenFile()error { dlg :=new(walk.FileDialog) //var te *walk.TextEdit dlg.FilePath = Mw.prevFilePath dlg.Filter = "txt Files (*.txt)|*.txt" dlg.Title = "Select an file" if ok,err:= dlg.ShowOpen(Mw); err!=nil { return err } else if!ok { return nil } Mw.prevFilePath = dlg.FilePath content :=GetCSV(Mw.prevFilePath) for i,_:= range content { //te.AppendText(content[i][0]) AppendChangeText(content[i][0]) } return nil } func AppendChangeText(valuestring) { start, end:= Te.TextSelection() len := Te.TextLength() Te.SetTextSelection(len, len) Te.ReplaceSelectedText(value+"\n",true) Te.SetTextSelection(start, end) }=============================================================
Abouter.go
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package Abouter import ( "editor/Opener" "github.com/lxn/walk" ) func AboutAction_Triggered() { walk.MsgBox(Opener.Mw, "About", "Walk Image Viewer Example", walk.MsgBoxIconInformation) }
执行效果图：
