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champagner

Registriert seit: 29. Apr 2008
46 Beiträge
 
Delphi XE6 Professional
 
#1

VCL Programm in fmx konvertieen

  Alt 11. Jun 2014, 17:05
Hallo,

ich habe einen Code zusammengebastelt, der als VCL-Anwendung ganz normal funktioniert. Es wird ein Webbrowser geöffnet und Google maps angezeigt:

Code:
unit Unit2;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, OleCtrls, SHDocVw, StdCtrls, ExtCtrls, XPMan, ComCtrls,MSHTML;

type
  TForm2 = class(TForm)
    WebBrowser1: TWebBrowser;
    LabelAddress: TLabel;
    PanelHeader: TPanel;
    ButtonGotoLocation: TButton;
    MemoAddress: TMemo;
    ButtonGotoAddress: TButton;
    LabelLatitude: TLabel;
    LabelLongitude: TLabel;
    Longitude: TEdit;
    Latitude: TEdit;
    CheckBoxTraffic: TCheckBox;
    CheckBoxBicycling: TCheckBox;
    CheckBoxStreeView: TCheckBox;
    ButtonClearMarkers: TButton;
    CheckBox1: TCheckBox;
    CheckBox2: TCheckBox;
    procedure FormCreate(Sender: TObject);
    procedure ButtonGotoAddressClick(Sender: TObject);
    procedure ButtonGotoLocationClick(Sender: TObject);
    procedure CheckBoxTrafficClick(Sender: TObject);
    procedure CheckBoxBicyclingClick(Sender: TObject);
    procedure CheckBoxStreeViewClick(Sender: TObject);
    procedure ButtonClearMarkersClick(Sender: TObject);
    procedure CheckBox1Click(Sender: TObject);
    procedure CheckBox2Click(Sender: TObject);
  private
    { Private declarations }
    HTMLWindow2: IHTMLWindow2;
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

uses
   ActiveX, Unit1;



{$R *.dfm}

const
HTMLStr: AnsiString =
'<html> '+
'<head> '+
'<meta name="viewport" content="initial-scale=1.0, user-scalable=yes" /> '+
'<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> '+
'<script type="text/javascript"> '+
''+
''+
' var geocoder; '+
' var map; '+
' var Beachclub; '+
' var marker; '+                // Markierung
' var trafficLayer;'+            // Layer Verkehr
' var bikeLayer;'+               // Layer
' var markersArray = [];'+
''+
''+
' function initialize() { '+
''+
'   geocoder = new google.maps.Geocoder();'+
''+
'   var latlng = new google.maps.LatLng(39.550189, 2.691211); '+
'   var latlng2 = new google.maps.LatLng(39.551200, 2.691211); '+
''+
'   var myOptions = { '+
'     zoom:     15, '+
'     center:   latlng, '+
'     mapTypeId: google.maps.MapTypeId.SATELLITE, '+       // ROADMAP (GROß geschrieben)
'     mapTypeControl: true, '+
'     mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU} '+
'                   }; '+
''+
'   map = new google.maps.Map(document.getElementById("map_canvas"), myOptions); '+
''+
'   marker   = new google.maps.Marker({ position: latlng , map: map, title: "Hello World!" }); '+
'   Beachclub = new google.maps.Marker({ position: latlng2, title: "Hello AAAA" }); '+
''+
'   trafficLayer = new google.maps.TrafficLayer();'+
'   bikeLayer = new google.maps.BicyclingLayer();'+
'   map.set("streetViewControl", false);'+
' } '+
''+
''+
' function codeAddress(address) { '+
'   if (geocoder) {'+
'     geocoder.geocode( { address: address}, function(results, status) { '+
'       if (status == google.maps.GeocoderStatus.OK) {'+
'         map.setCenter(results[0].geometry.location);'+
'         PutMarker(results[0].geometry.location.lat(), results[0].geometry.location.lng(), results[0].geometry.location.lat()+","+results[0].geometry.location.lng());'+
'       } else {'+
'         alert("Geocode was not successful for the following reason: " + status);'+
'       }'+
'     });'+
'   }'+
' }'+
''+
''+
' function GotoLatLng(Lat, Lang) { '+
'  var latlng = new google.maps.LatLng(Lat,Lang);'+
'  map.setCenter(latlng);'+
'  PutMarker(Lat, Lang, Lat+","+Lang);'+
' }'+
''+
''+
'function ClearMarkers() {  '+
' if (markersArray) {        '+
'   for (i in markersArray) {  '+
'     markersArray[i].setMap(null); '+
'   } '+
' } '+
'}  '+
''+
' function PutMarker(Lat, Lang, Msg) { '+
'  var latlng = new google.maps.LatLng(Lat,Lang);'+
'  var marker = new google.maps.Marker({'+
'     position: latlng, '+
'     map: map,'+
'     title: Msg+" ("+Lat+","+Lang+")"'+
' });'+
' markersArray.push(marker); '+
' }'+
''+
''+
' function TrafficOn()  { trafficLayer.setMap(map); }'+
''+
' function TrafficOff() { trafficLayer.setMap(null); }'+
''+''+
' function CheckBox1On()  { map.set ("overviewMapControl", true); }'+     //
''+
' function CheckBox1Off() { map.set ("overviewMapControl", false); }'+    //
''+''+

' function CheckBox2On()  { Beachclub.setMap(map); }'+     //
''+
' function CheckBox2Off() { Beachclub.setMap(null); }'+     //
''+''+

' function BicyclingOn() { bikeLayer.setMap(map); }'+
''+
' function BicyclingOff(){ bikeLayer.setMap(null);}'+
''+
' function StreetViewOn() { map.set("streetViewControl", true); }'+
''+
' function StreetViewOff() { map.set("streetViewControl", false); }'+
''+
''+'</script> '+
'</head> '+
'<body onload="initialize()"> '+
' <div id="map_canvas" style="width:100%; height:100%"></div> '+
'</body> '+
'</html> ';


procedure TForm2.FormCreate(Sender: TObject);
var
  aStream    : TMemoryStream;
begin
   WebBrowser1.Navigate('about:blank');
    if Assigned(WebBrowser1.Document) then
    begin
      aStream := TMemoryStream.Create;
      try
         aStream.WriteBuffer(Pointer(HTMLStr)^, Length(HTMLStr));
         //aStream.Write(HTMLStr[1], Length(HTMLStr));
         aStream.Seek(0, soFromBeginning);
         (WebBrowser1.Document as IPersistStreamInit).Load(TStreamAdapter.Create(aStream));
      finally
         aStream.Free;
      end;
      HTMLWindow2 := (WebBrowser1.Document as IHTMLDocument2).parentWindow;

    end;
end;


procedure TForm2.ButtonGotoLocationClick(Sender: TObject);
begin
   HTMLWindow2.execScript(Format('GotoLatLng(%s,%s)',[Latitude.Text,Longitude.Text]), 'JavaScript');
end;

procedure TForm2.ButtonClearMarkersClick(Sender: TObject);
begin
  HTMLWindow2.execScript('ClearMarkers()', 'JavaScript')
end;

procedure TForm2.ButtonGotoAddressClick(Sender: TObject);
var
   address   : string;
begin
   address := MemoAddress.Lines.Text;
   address := StringReplace(StringReplace(Trim(address), #13, ' ', [rfReplaceAll]), #10, ' ', [rfReplaceAll]);
   HTMLWindow2.execScript(Format('codeAddress(%s)',[QuotedStr(address)]), 'JavaScript');
end;

procedure TForm2.CheckBoxStreeViewClick(Sender: TObject);
begin
    if CheckBoxStreeView.Checked then
     HTMLWindow2.execScript('StreetViewOn()', 'JavaScript')
    else
     HTMLWindow2.execScript('StreetViewOff()', 'JavaScript');

end;

procedure TForm2.CheckBox1Click(Sender: TObject);
begin
    if CheckBox1.Checked then
     HTMLWindow2.execScript('CheckBox1On()', 'JavaScript')
    else
     HTMLWindow2.execScript('CheckBox1Off()', 'JavaScript');
end;

procedure TForm2.CheckBox2Click(Sender: TObject);
begin
if CheckBox2.Checked then
     HTMLWindow2.execScript('CheckBox2On()', 'JavaScript')
    else
     HTMLWindow2.execScript('CheckBox2Off()', 'JavaScript');
end;

procedure TForm2.CheckBoxBicyclingClick(Sender: TObject);
begin
    if CheckBoxBicycling.Checked then
     HTMLWindow2.execScript('BicyclingOn()', 'JavaScript')
    else
     HTMLWindow2.execScript('BicyclingOff()', 'JavaScript');
 end;


procedure TForm2.CheckBoxTrafficClick(Sender: TObject);
begin
    if CheckBoxTraffic.Checked then
     HTMLWindow2.execScript('TrafficOn()', 'JavaScript')
    else
     HTMLWindow2.execScript('TrafficOff()', 'JavaScript');
 end;


end.
Jetzt habe ich, der ich neu in fmx bin, versucht, diesen Code in fmx umzuwandeln (zum Zwecke der Erstellung einer Android-Anwendung). Dabei tauchen folgende Probleme auf:

1. Fehlermeldung bei " private
HTMLWindow2: IHTMLWindow2;": Undeklarierter Bezeichner: "IHTMLWindow2"

2. Fehlermeldung bei "HTMLStr: AnsiString": Undeklarierter Bezeichner: "AnsiString"

3. Fehlermeldung in der FormCreate: "WebBrowser1.Document": Undeklarierter Bezeichner: "Document"

4. Fehlermeldung in der FormCreate: (WebBrowser1.Document as IPersistStreamInit).Load(TStreamAdapter.Create(aSt ream));: Undeklarierter Bezeichner: 'IPersistStreamInit' UND "Operator ist auf diesen Operandentyp nicht anwendbar"

4. Wie steht es mit den uses?


Herzlichen Dank für jeden Hinweis. Ich bin gerne bereit, mich einzuarbeiten.
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