Added an auto update check

G940LEDControl/Forms/MainFrm.dfm

@@ -28,7 +28,7 @@ object MainForm: TMainForm
     Margins.Top = 8
     Margins.Right = 8
     Margins.Bottom = 8
-    ActivePage = tsFSX
+    ActivePage = tsAbout
     Align = alClient
     TabOrder = 1
     object tsFSX: TTabSheet
@@ -438,6 +438,7 @@ object MainForm: TMainForm
     object tsAbout: TTabSheet
       Caption = 'About'
       ImageIndex = 1
+      ExplicitLeft = 12
       object lblVersionCaption: TLabel
         Left = 16
         Top = 67
@@ -486,6 +487,19 @@ object MainForm: TMainForm
         Height = 13
         Caption = 'E-mail:'
       end
+      object lblProxy: TLabel
+        Left = 36
+        Top = 368
+        Width = 246
+        Height = 13
+        Caption = 'This might not work if you'#39're behind a proxy, sorry!'
+        Font.Charset = DEFAULT_CHARSET
+        Font.Color = clGrayText
+        Font.Height = -11
+        Font.Name = 'Tahoma'
+        Font.Style = []
+        ParentFont = False
+      end
       object lblWebsiteLink: TLinkLabel
         Left = 75
         Top = 111
@@ -508,6 +522,23 @@ object MainForm: TMainForm
         TabOrder = 1
         OnLinkClick = lblLinkLinkClick
       end
+      object cbCheckUpdates: TCheckBox
+        Left = 16
+        Top = 344
+        Width = 305
+        Height = 17
+        Caption = ' Automatically check for &updates'
+        TabOrder = 2
+      end
+      object btnCheckUpdates: TButton
+        Left = 344
+        Top = 340
+        Width = 83
+        Height = 25
+        Caption = '&Check now'
+        TabOrder = 3
+        OnClick = btnCheckUpdatesClick
+      end
     end
   end
   object pnlG940: TPanel
@@ -900,7 +931,7 @@ object MainForm: TMainForm
       Width = 75
       Height = 25
       Anchors = [akTop, akRight]
-      Caption = 'Retry'
+      Caption = '&Retry'
       TabOrder = 0
       Visible = False
       OnClick = btnRetryClick

G940LEDControl/Forms/MainFrm.pas

@@ -15,6 +15,7 @@ uses
   OtlComm,
   OtlEventMonitor,
   OtlTaskControl,
+  OtlTask,
   pngimage,
   X2UtPersistIntf,
 
@@ -23,10 +24,15 @@ uses
   LEDStateProvider;
 
 
+const
+  CM_ASKAUTOUPDATE = WM_APP + 1;
+
+  MSG_UPDATE = 1;
+  MSG_NOUPDATE = 2;
+
 type
   TComboBoxArray = array[0..7] of TComboBoxEx;
 
-
   TMainForm = class(TForm)
     imgStateNotFound: TImage;
     lblG940Throttle: TLabel;
@@ -79,6 +85,9 @@ type
     lblEmailLink: TLinkLabel;
     lblWebsite: TLabel;
     lblEmail: TLabel;
+    cbCheckUpdates: TCheckBox;
+    btnCheckUpdates: TButton;
+    lblProxy: TLabel;
 
     procedure FormCreate(Sender: TObject);
     procedure btnRetryClick(Sender: TObject);
@@ -88,6 +97,7 @@ type
     procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
     procedure FunctionComboBoxChange(Sender: TObject);
     procedure lblLinkLinkClick(Sender: TObject; const Link: string; LinkType: TSysLinkType);
+    procedure btnCheckUpdatesClick(Sender: TObject);
   private
     FEventMonitor: TOmniEventMonitor;
     FStateConsumerTask: IOmniTaskControl;
@@ -100,8 +110,10 @@ type
 
     procedure ReadFunctions(AReader: IX2PersistReader; AComboBoxes: TComboBoxArray);
     procedure ReadFSXExtra(AReader: IX2PersistReader);
+    procedure ReadAutoUpdate(AReader: IX2PersistReader);
     procedure WriteFunctions(AWriter: IX2PersistWriter; AComboBoxes: TComboBoxArray);
     procedure WriteFSXExtra(AWriter: IX2PersistWriter);
+    procedure WriteAutoUpdate(AWriter: IX2PersistWriter);
 
     procedure LoadDefaultProfile;
     procedure SaveDefaultProfile;
@@ -114,6 +126,9 @@ type
 
     procedure UpdateMapping;
 
+    procedure CheckForUpdatesThread(const ATask: IOmniTask);
+    procedure CheckForUpdates(AReportNoUpdates: Boolean);
+
     procedure EventMonitorMessage(const task: IOmniTaskControl; const msg: TOmniMessage);
     procedure EventMonitorTerminated(const task: IOmniTaskControl);
 
@@ -122,6 +137,8 @@ type
     procedure HandleProviderKilled(ATask: IOmniTaskControl; AMessage: TOmniMessage);
     procedure HandleProviderKilledFSX(ATask: IOmniTaskControl; AMessage: TOmniMessage);
 
+    procedure CMAskAutoUpdate(var Msg: TMessage); message CM_ASKAUTOUPDATE;
+
     property EventMonitor: TOmniEventMonitor read FEventMonitor;
     property StateConsumerTask: IOmniTaskControl read FStateConsumerTask;
   end;
@@ -134,8 +151,9 @@ uses
   ShellAPI,
   SysUtils,
 
+  IdException,
+  IdHTTP,
   OtlCommon,
-  OtlTask,
   X2UtApp,
   X2UtPersistRegistry,
 
@@ -154,8 +172,10 @@ const
   TEXT_STATE_NOTFOUND = 'Not found';
   TEXT_STATE_FOUND = 'Connected';
 
-  KEY_DEFAULTPROFILE = '\Software\X2Software\G940LEDControl\DefaultProfile\';
+  KEY_SETTINGS = '\Software\X2Software\G940LEDControl\';
+  SECTION_DEFAULTPROFILE = 'DefaultProfile';
   SECTION_FSX = 'FSX';
+  SECTION_SETTINGS = 'Settings';
 
 
 type
@@ -221,6 +241,17 @@ begin
 end;
 
 
+procedure TMainForm.CMAskAutoUpdate(var Msg: TMessage);
+begin
+  if MessageBox(Self.Handle, 'I''m sorry to delay your flight, but I will only ask this once.'#13#10 +
+                             'Do you want to automatically check for updates?', 'Check for updates', MB_YESNO or MB_ICONQUESTION) = ID_YES then
+  begin
+    cbCheckUpdates.Checked := True;
+    CheckForUpdates(False);
+  end;
+end;
+
+
 procedure TMainForm.SetDeviceState(const AMessage: string; AFound: Boolean);
 begin
   lblG940ThrottleState.Caption := AMessage;
@@ -326,6 +357,32 @@ begin
 end;
 
 
+procedure TMainForm.ReadAutoUpdate(AReader: IX2PersistReader);
+var
+  checkUpdates: Boolean;
+  askAutoUpdate: Boolean;
+
+begin
+  askAutoUpdate := True;
+
+  if AReader.BeginSection(SECTION_SETTINGS) then
+  try
+    if AReader.ReadBoolean('CheckUpdates', checkUpdates) then
+    begin
+      cbCheckUpdates.Checked := checkUpdates;
+      askAutoUpdate := False;
+    end;
+  finally
+    AReader.EndSection;
+  end;
+
+  if askAutoUpdate then
+    PostMessage(Self.Handle, CM_ASKAUTOUPDATE, 0, 0)
+  else if cbCheckUpdates.Checked then
+    CheckForUpdates(False);
+end;
+
+
 procedure TMainForm.WriteFunctions(AWriter: IX2PersistWriter; AComboBoxes: TComboBoxArray);
 var
   comboBox: TComboBoxEx;
@@ -362,6 +419,17 @@ begin
 end;
 
 
+procedure TMainForm.WriteAutoUpdate(AWriter: IX2PersistWriter);
+begin
+  if AWriter.BeginSection(SECTION_SETTINGS) then
+  try
+    AWriter.WriteBoolean('CheckUpdates', cbCheckUpdates.Checked);
+  finally
+    AWriter.EndSection;
+  end;
+end;
+
+
 procedure TMainForm.LoadDefaultProfile;
 var
   registryReader: TX2UtPersistRegistry;
@@ -371,12 +439,19 @@ begin
   registryReader := TX2UtPersistRegistry.Create;
   try
     registryReader.RootKey := HKEY_CURRENT_USER;
-    registryReader.Key := KEY_DEFAULTPROFILE;
+    registryReader.Key := KEY_SETTINGS;
 
     reader := registryReader.CreateReader;
 
+    if reader.BeginSection(SECTION_DEFAULTPROFILE) then
+    try
       ReadFunctions(reader, FFSXComboBoxes);
       ReadFSXExtra(reader);
+    finally
+      reader.EndSection;
+    end;
+
+    ReadAutoUpdate(reader);
   finally
     FreeAndNil(registryReader);
   end;
@@ -392,11 +467,18 @@ begin
   registryWriter := TX2UtPersistRegistry.Create;
   try
     registryWriter.RootKey := HKEY_CURRENT_USER;
-    registryWriter.Key := KEY_DEFAULTPROFILE;
+    registryWriter.Key := KEY_SETTINGS;
 
     writer := registryWriter.CreateWriter;
+    if writer.BeginSection(SECTION_DEFAULTPROFILE) then
+    try
       WriteFunctions(writer, FFSXComboBoxes);
       WriteFSXExtra(writer);
+    finally
+      writer.EndSection;
+    end;
+
+    WriteAutoUpdate(writer);
   finally
     FreeAndNil(registryWriter);
   end;
@@ -426,12 +508,123 @@ begin
 end;
 
 
+function FetchNextNumber(var AValue: string; out ANumber: Integer): Boolean;
+var
+  dotPos: Integer;
+  number: string;
+
+begin
+  ANumber := 0;
+
+  dotPos := AnsiPos('.', AValue);
+  if dotPos > 0 then
+  begin
+    number := Copy(AValue, 1, Pred(dotPos));
+    Delete(AValue, 1, dotPos);
+  end
+  else
+  begin
+    number := AValue;
+    AValue := '';
+  end;
+
+  Result := TryStrToInt(number, ANumber);
+end;
+
+
+function VersionIsNewer(const AVersion1, AVersion2: string): Boolean;
+var
+  version1: string;
+  version2: string;
+  number1: Integer;
+  number2: Integer;
+
+begin
+  if Length(AVersion1) = 0 then
+  begin
+    Result := True;
+    Exit;
+  end;
+
+  Result := False;
+  version1 := AVersion1;
+  version2 := AVersion2;
+
+  while (not Result) and
+        FetchNextNumber(version1, number1) and
+        FetchNextNumber(version2, number2) do
+  begin
+    if number2 > number1 then
+      Result := True
+    else if number2 < number1 then
+      Break;
+  end;
+end;
+
+
+procedure TMainForm.CheckForUpdatesThread(const ATask: IOmniTask);
+var
+  httpClient: TIdHTTP;
+  msgSent: Boolean;
+  latestVersion: string;
+
+begin
+  msgSent := False;
+  try
+    httpClient := TIdHTTP.Create(nil);
+    try
+      latestVersion := httpClient.Get('http://g940.x2software.net/version');
+      if VersionIsNewer(Format('%d.%d.%d', [App.Version.Major, App.Version.Minor, App.Version.Release]), latestVersion) then
+        ATask.Comm.Send(MSG_UPDATE)
+      else
+      begin
+        if ATask.Param.ByName('ReportNoUpdates').AsBoolean then
+          ATask.Comm.Send(MSG_NOUPDATE, True);
+      end;
+
+      msgSent := True;
+    finally
+      FreeAndNil(httpClient);
+    end;
+  except
+    on E:EIdSilentException do;
+    on E:Exception do
+    begin
+      if not msgSent then
+        ATask.Comm.Send(MSG_NOUPDATE, False);
+    end;
+  end;
+end;
+
+
+procedure TMainForm.CheckForUpdates(AReportNoUpdates: Boolean);
+begin
+  btnCheckUpdates.Enabled := False;
+
+  CreateTask(CheckForUpdatesThread, 'CheckForUpdatesThread')
+    .MonitorWith(EventMonitor)
+    .SetParameter('ReportNoUpdates', AReportNoUpdates)
+    .Run;
+end;
+
+
 procedure TMainForm.EventMonitorMessage(const task: IOmniTaskControl; const msg: TOmniMessage);
 begin
   case msg.MsgID of
     MSG_NOTIFY_DEVICESTATE:   HandleDeviceStateMessage(task, msg);
     MSG_RUN_IN_MAINTHREAD:    HandleRunInMainThreadMessage(task, msg);
     MSG_PROVIDER_KILLED:      HandleProviderKilled(task, msg);
+
+    MSG_UPDATE:
+      if MessageBox(Self.Handle, 'An update is available on the G940 LED Control website.'#13#10'Do you want to go there now?',
+                                 'Update available', MB_YESNO or MB_ICONINFORMATION) = ID_YES then
+        ShellExecute(Self.Handle, 'open', PChar('http://g940.x2software.net/#download'), nil, nil, SW_SHOWNORMAL);
+
+    MSG_NOUPDATE:
+      if msg.MsgData.AsBoolean then
+        MessageBox(Self.Handle, 'You are using the latest version.', 'No update available', MB_OK or MB_ICONINFORMATION)
+      else
+        MessageBox(Self.Handle, 'Failed to check for updates. Maybe try again later?', 'Uh-oh', MB_OK or MB_ICONWARNING);
   end;
 end;
 
@@ -442,7 +635,8 @@ begin
   begin
     FStateConsumerTask := nil;
     Close;
-  end;
+  end else if task.Name = 'CheckForUpdatesThread' then
+    btnCheckUpdates.Enabled := True;
 end;
 
 
@@ -495,6 +689,11 @@ begin
 end;
 
 
+procedure TMainForm.btnCheckUpdatesClick(Sender: TObject);
+begin
+  CheckForUpdates(True);
+end;
+
 procedure TMainForm.btnFSXConnectClick(Sender: TObject);
 begin
   SaveDefaultProfile;

G940LEDControl/G940LEDControl.dpr

@@ -3,14 +3,14 @@ program G940LEDControl;
 uses
   Forms,
   MainFrm in 'Forms\MainFrm.pas' {MainForm},
-  FSXLEDStateProvider in 'Units\FSXLEDStateProvider.pas',
-  LEDStateConsumer in 'Units\LEDStateConsumer.pas',
-  LEDStateProvider in 'Units\LEDStateProvider.pas',
-  LEDFunctionMap in 'Units\LEDFunctionMap.pas',
-  G940LEDStateConsumer in 'Units\G940LEDStateConsumer.pas',
   LogiJoystickDLL in '..\Shared\LogiJoystickDLL.pas',
   SimConnect in '..\Shared\SimConnect.pas',
-  ButtonSelectFrm in 'Forms\ButtonSelectFrm.pas' {ButtonSelectForm};
+  ButtonSelectFrm in 'Forms\ButtonSelectFrm.pas' {ButtonSelectForm},
+  FSXLEDStateProvider in 'Units\FSXLEDStateProvider.pas',
+  G940LEDStateConsumer in 'Units\G940LEDStateConsumer.pas',
+  LEDFunctionMap in 'Units\LEDFunctionMap.pas',
+  LEDStateConsumer in 'Units\LEDStateConsumer.pas',
+  LEDStateProvider in 'Units\LEDStateProvider.pas';
 
 {$R *.res}
 

G940LEDControl/G940LEDControl.dproj

@@ -163,17 +163,17 @@
 			<DCCReference Include="Forms\MainFrm.pas">
 				<Form>MainForm</Form>
 			</DCCReference>
-			<DCCReference Include="Units\FSXLEDStateProvider.pas"/>
-			<DCCReference Include="Units\LEDStateConsumer.pas"/>
-			<DCCReference Include="Units\LEDStateProvider.pas"/>
-			<DCCReference Include="Units\LEDFunctionMap.pas"/>
-			<DCCReference Include="Units\G940LEDStateConsumer.pas"/>
 			<DCCReference Include="..\Shared\LogiJoystickDLL.pas"/>
 			<DCCReference Include="..\Shared\SimConnect.pas"/>
 			<DCCReference Include="Forms\ButtonSelectFrm.pas">
 				<Form>ButtonSelectForm</Form>
 				<FormType>dfm</FormType>
 			</DCCReference>
+			<DCCReference Include="Units\FSXLEDStateProvider.pas"/>
+			<DCCReference Include="Units\G940LEDStateConsumer.pas"/>
+			<DCCReference Include="Units\LEDFunctionMap.pas"/>
+			<DCCReference Include="Units\LEDStateConsumer.pas"/>
+			<DCCReference Include="Units\LEDStateProvider.pas"/>
 			<BuildConfiguration Include="Debug">
 				<Key>Cfg_2</Key>
 				<CfgParent>Base</CfgParent>

G940LEDControl/Units/LEDStateConsumer.pas

@@ -11,19 +11,19 @@ uses
 
 
 const
-  MSG_CLEAR_FUNCTIONS = 1;
+  MSG_CLEAR_FUNCTIONS = 1001;
-  MSG_SET_FUNCTION = 2;
+  MSG_SET_FUNCTION = 1002;
-  MSG_INITIALIZE_PROVIDER = 3;
+  MSG_INITIALIZE_PROVIDER = 1003;
-  MSG_FINALIZE_PROVIDER = 4;
+  MSG_FINALIZE_PROVIDER = 1004;
-  MSG_PROCESS_MESSAGES = 5;
+  MSG_PROCESS_MESSAGES = 1005;
-  MSG_FINALIZE = 6;
+  MSG_FINALIZE = 1006;
 
-  MSG_PROVIDER_KILLED = 7;
+  MSG_PROVIDER_KILLED = 1007;
-  MSG_RUN_IN_MAINTHREAD = 8;
+  MSG_RUN_IN_MAINTHREAD = 1008;
 
   MSG_CONSUMER_OFFSET = MSG_RUN_IN_MAINTHREAD;
 
-  TIMER_PROCESSMESSAGES = 1;
+  TIMER_PROCESSMESSAGES = 1001;
   TIMER_CONSUMER_OFFSET = TIMER_PROCESSMESSAGES;