教程-Delphi調用百度地圖API(XE8+WIN7)
阿新 • • 發佈：2018-01-25
創建地圖 exe show initial exce sse html sys proc
unit U_map; interface //---------------------------------------------------// //----------COPY BY 無言 QQ:4252181 -----------------// //---------------------------------------------------// uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, OleCtrls, SHDocVw, StdCtrls, MSHTML, StrUtils, ActiveX, ExtCtrls;//---------------------------------------------------// //----------歡迎大家和我聯系，軟件開發 --------------// //---------------------------------------------------// type TF_map = class(TForm) grp1: TGroupBox; WebBrowser: TWebBrowser; grp2: TGroupBox; grp3: TGroupBox; grp4: TGroupBox; tmr1: TTimer; GroupBox1: TGroupBox; GroupBox2: TGroupBox; Edit1: TEdit; Edit2: TEdit; chk1: TCheckBox; Edit3: TEdit; Edit4: TEdit; edt1: TEdit; edt2: TEdit; edt3: TEdit; edt4: TEdit;procedure FormCreate(Sender: TObject); procedure btn1Click(Sender: TObject); procedure btn2Click(Sender: TObject); procedure FormShow(Sender: TObject); procedure btn3Click(Sender: TObject); procedure Button1Click(Sender: TObject); procedure loadweb(); procedure btn4Click(Sender: TObject);procedure AppMsg(var Msg: TagMsg; var Handled: Boolean); procedure GetWebContent(); procedure tmr1Timer(Sender: TObject); private { Private declarations } lng, lat: string; public { Public declarations } end; var F_map: TF_map; const Doc1: string = ‘<html>‘ + ‘<head>‘ + ‘<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />‘ + ‘<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />‘ + ‘<title>BAIDU MAP</title>‘ + ‘<style type="text/css">‘ + ‘html{height:100%}‘ + ‘body{height:100%;margin:0px;padding:0px}‘ + ‘#container{height:100%}‘ + ‘</style>‘ + ‘<script type="text/javascript"src="http://api.map.baidu.com/api?v=1.3"></script>‘ + ‘</head>‘ + ‘<body>‘ + ‘<div id="container"></div>‘ //style="visibility:hidden; display:none"> +‘<div id="centerweidu" style="visibility:hidden; display:none"></div>‘ +‘<div id="centerjingdu" style="visibility:hidden; display:none"></div>‘ +‘<div id="weidutemp" style="visibility:hidden;display:none"></div>‘ +‘<div id="jingdutemp" style="visibility:hidden;display:none"></div>‘ +‘<div id="weidu" style="visibility:hidden;display:none"></div>‘ +‘<div id="jingdu" style="visibility:hidden;display:none"></div>‘ +‘<div id="Distance" style="visibility:hidden;display:none"></div>‘ + ‘<script language="JavaScript" type="text/javascript">‘ + ‘var map = new BMap.Map("container");‘ // 創建地圖實例 + ‘map.addControl(new BMap.NavigationControl());‘ + ‘map.addControl(new BMap.ScaleControl());‘ + ‘map.addControl(new BMap.OverviewMapControl());‘ + ‘map.addControl(new BMap.MapTypeControl(BMAP_ANCHOR_BOTTOM_RIGHT));‘ // 將標註添加到地圖中 + ‘map.enableScrollWheelZoom();‘ // 啟用滾輪放大縮小。 + ‘map.enableKeyboard();‘ // 啟用鍵盤操作。 + ‘var centerpoint = new BMap.Point(126.666431,45.764502);‘ // 創建點坐標 126.666431, 45.764502 + ‘var marker = new BMap.Marker(centerpoint);‘ // 創建標註 + ‘map.addOverlay(marker);‘ + ‘var label = new BMap.Label("哈爾濱海銘科技有限公司",{offset:new BMap.Size(20,-10)});‘ + ‘marker.setLabel(label);‘ +‘ map.centerAndZoom(centerpoint, 15);‘ // 初始化地圖，設置中心點坐標和地圖級別‘ +‘ map.addEventListener("mousemove", function(e){‘ +‘ document.getElementById("weidutemp").innerHTML = e.point.lng;‘ +‘ document.getElementById("jingdutemp").innerHTML = e.point.lat;});‘ +‘ map.addEventListener("click", function(f){‘ +‘ document.getElementById("weidu").innerHTML = f.point.lng;‘ +‘ document.getElementById("jingdu").innerHTML = f.point.lat;});‘ +‘function SetCarCenterPoint(newlng,newlat){‘ +‘centerpoint=new BMap.Point(newlng,newlat);‘ + ‘var marker = new BMap.Marker(centerpoint);‘ + ‘map.addOverlay(marker);‘ + ‘var label = new BMap.Label("當前汽車坐標",{offset:new BMap.Size(20,-10)});‘ + ‘marker.setLabel(label);‘ + ‘map.panTo(centerpoint);‘ +‘}‘ +‘function SetAutoCenterPoint(newlng,newlat){‘ +‘centerpoint=new BMap.Point(newlng,newlat);‘ + ‘var marker = new BMap.Marker(centerpoint);‘ + ‘map.addOverlay(marker);‘ + ‘var label = new BMap.Label("4S店坐標",{offset:new BMap.Size(20,-10)});‘ + ‘marker.setLabel(label);‘ + ‘map.panTo(centerpoint);‘ +‘}‘ +‘function PrintLine(newlng,newlat,oldlng,oldlat,biaoji){‘ +‘var point = new BMap.Point(newlng,newlat);‘ // 創建點坐標 + ‘map.panTo(point);‘ // + ‘if (biaoji=‘‘0‘‘)‘ // +‘{‘ // + ‘var marker = new BMap.Marker(point);‘ // + ‘map.addOverlay(marker);‘ // +‘}‘ + ‘var polyline = new BMap.Polyline([‘ + ‘new BMap.Point(oldlng,oldlat),‘ + ‘new BMap.Point(point.lng, point.lat)‘ + ‘], {strokeColor:"blue", strokeWeight:4, strokeOpacity:0.5});‘ + ‘map.addOverlay(polyline);‘ +‘}‘ +‘function GetCenter(){‘ +‘ var center = map.getCenter();‘ +‘ document.getElementById("centerweidu").innerHTML = center.lng;‘ +‘ document.getElementById("centerjingdu").innerHTML = center.lat;‘ +‘}‘ +‘function Distance(newlng,newlat){‘ +‘var pointA=centerpoint;‘ +‘var pointB=new BMap.Point(newlng,newlat);‘ +‘document.getElementById("Distance").innerHTML = map.getDistance(pointA,pointB);‘ +‘alert(‘‘距離是：‘‘+map.getDistance(pointA,pointB)+‘‘ 米。‘‘);‘ // +‘return map.getDistance(pointA,pointB);‘ +‘}‘ + ‘</script>‘ + ‘</body>‘ + ‘</html>‘; implementation {$R *.dfm} procedure TF_map.AppMsg(var Msg: TagMsg; var Handled: Boolean); var mPoint: TPoint; begin if IsChild(WebBrowser.Handle, Msg.Hwnd) and (Msg.Message = WM_MOUSEMOVE) then begin GetCursorPos(mPoint); GetWebContent; Handled := True; end; end; function JavaScript(j: string): Boolean; begin try // (F_map.WebBrowser.Document as IHTMLDocument2).parentWindow.execScript(j, ‘JavaScript‘); F_map.WebBrowser.OleObject.Document.parentWindow.execScript(j, ‘JavaScript‘); Result := True; except Result := false; end; end; procedure TF_map.btn1Click(Sender: TObject); var str: string; begin self.WebBrowser.OleObject.Document.parentWindow.execScript(‘GetCenter()‘, ‘JavaScript‘); end; procedure TF_map.btn2Click(Sender: TObject); var str: string; begin if (Edit1.Text <> ‘‘) and (Edit2.Text <> ‘‘) then begin self.WebBrowser.OleObject.Document.parentWindow.execScript (‘Distance(‘ + Edit1.Text + ‘,‘ + Edit2.Text + ‘)‘, ‘JavaScript‘); end; end; procedure TF_map.btn3Click(Sender: TObject); var biaoji: string; begin if lng = ‘‘ then begin lng := ‘126.666431‘; // 126.666431,45.764502 end; if lat = ‘‘ then begin lat := ‘45.764502‘; end; if chk1.Checked then begin biaoji := ‘1‘; end else begin biaoji := ‘0‘; end; if (Edit1.Text <> ‘‘) and (Edit2.Text <> ‘‘) then begin self.WebBrowser.OleObject.Document.parentWindow.execScript (‘PrintLine(‘ + Edit1.Text + ‘,‘ + Edit2.Text + ‘,‘ + lng + ‘,‘ + lat + ‘,‘ + biaoji + ‘)‘, ‘JavaScript‘); lng := self.Edit1.Text; lat := self.Edit2.Text; end; end; procedure TF_map.btn4Click(Sender: TObject); begin loadweb; lng := ‘‘; lat := ‘‘; end; procedure TF_map.Button1Click(Sender: TObject); var str: string; begin if (Edit3.Text <> ‘‘) and (Edit4.Text <> ‘‘) then begin self.WebBrowser.OleObject.Document.parentWindow.execScript (‘SetAutoCenterPoint(‘ + Edit3.Text + ‘,‘ + Edit4.Text + ‘)‘, ‘JavaScript‘); end; end; procedure TF_map.loadweb(); var sl: TStringList; ms: TMemoryStream; begin self.WebBrowser.Silent := True; WebBrowser.Navigate(‘about:blank‘); (WebBrowser.Document as IHTMLDocument2) .URL := ‘http://127.0.0.1/‘; while WebBrowser.ReadyState < READYSTATE_INTERACTIVE do Application.ProcessMessages; if Assigned(WebBrowser.Document) then begin sl := TStringList.Create; try ms := TMemoryStream.Create; try sl.Text := Doc1; sl.SaveToStream(ms); ms.Seek(0, 0); (WebBrowser.Document as IPersistStreamInit) .Load(TStreamAdapter.Create(ms)); finally ms.Free; end; finally sl.Free; end; end; end; procedure TF_map.tmr1Timer(Sender: TObject); begin GetWebContent; end; procedure TF_map.FormCreate(Sender: TObject); begin loadweb; //Application.OnMessage:=AppMsg; end; procedure TF_map.FormShow(Sender: TObject); begin lng := ‘‘; lat := ‘‘; tmr1.Enabled := True; end; procedure TF_map.GetWebContent(); var html: IHTMLDocument2; // 定義網頁元素 submitbutton: OleVariant; // 定義按鈕 centerweidu, centerjingdu, weidu, jingdu, weidutemp, jingdutemp: IHTMLElement; // 定義網頁輸入元素 begin try html := self.WebBrowser.Document as IHTMLDocument2; centerweidu := html.all.item(‘centerweidu‘, 0) as IHTMLElement; centerjingdu := html.all.item(‘centerjingdu‘, 0) as IHTMLElement; weidu := html.all.item(‘weidu‘, 0) as IHTMLElement; jingdu := html.all.item(‘jingdu‘, 0) as IHTMLElement; weidutemp := html.all.item(‘weidutemp‘, 0) as IHTMLElement; jingdutemp := html.all.item(‘jingdutemp‘, 0) as IHTMLElement; edt1.Text := centerweidu.innerText; edt2.Text := centerjingdu.innerText; edt3.Text := weidutemp.innerText; edt4.Text := jingdutemp.innerText; Edit1.Text := weidu.innerText; Edit2.Text := jingdu.innerText; except end; end; end.
教程-Delphi調用百度地圖API(XE8+WIN7)