Version 1.1.0.1, new configuration option, with it you can now select…

… which Keys to Catch, all other Keys will be passed normally to OS

AutoHotkey_example.ahk

@@ -18,40 +18,6 @@ MsgFunc(wParam, lParam, msg, hwnd)
   OnUniqueKeyboard(wParam, lParam & 0xFF, (lParam & 0x100) > 0, (lParam & 0x200) > 0, (lParam & 0x400) > 0, (lParam & 0x800) > 0, (lParam & 0x1000) > 0, (lParam & 0x2000) > 0, (lParam & 0x4000) > 0, (lParam & 0x8000) > 0)  	
 }
 
-; do not modify
-byte2hex(int)
-{
-	; based on https://www.autohotkey.com/boards/viewtopic.php?t=3925
-	; used when doing "passthroug"
-	HEX_BYTE := 2
-	while (HEX_BYTE--)
-	{
-			n := (int >> (HEX_BYTE * 4)) & 0xf
-			h .= n > 9 ? chr(0x37 + n) : n
-			if (HEX_BYTE == 0 && HEX_BYTE//2 == 0)
-					h .= " "
-	}
-	return h
-}
-
-; do not modify
-DoPassThrough(KeyboardNumber, VKeyCode, IsDown, WasDown, IsExtended, LeftCtrl, RightCtrl, LeftAlt, RightAlt, Shift)
-{
-	VKeyCodeHex := byte2hex(VKeyCode)
-	PassThroughKey := "{vk" . VKeyCodeHex . "}"
-
-	if (LeftCtrl || RightCtrl)
-		PassThroughKey := "^" . PassThroughKey
-
-	if (LeftAlt || RightAlt)
-		PassThroughKey := "!" . PassThroughKey
-
-	if (Shift)
-		PassThroughKey := "+" . PassThroughKey
-
-	Send %PassThroughKey%
-}
-
 ; KeyboardNumber - configured by you in MultiKB_For_AutoHotkey, this identify keyboard device
 ; VKeyCode - Key Code, https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes 
 ; IsDown - is key pressed or released, use "if (!IsDown)" if you like to register only key up, without this your code will be executed twice on key down and key up
@@ -66,11 +32,6 @@ OnUniqueKeyboard(KeyboardNumber, VKeyCode, IsDown, WasDown, IsExtended, LeftCtrl
 	; example, remove, keyboard 1 - "G" + RightCtrl + LeftAlt + Shift
 	if (KeyboardNumber = 1 and VKeyCode = 71 and RightCtrl and LeftAlt and Shift)
 		MsgBox "Test message"
-	; if you want to pass all other keys as normal then add code like below 
-	else if (!IsDown)
-	{
-		DoPassThrough(KeyboardNumber, VKeyCode, IsDown, WasDown, IsExtended, LeftCtrl, RightCtrl, LeftAlt, RightAlt, Shift)
-	}
 
 	; ---> Add your code below <---
 

MultiKB_For_AutoHotkey.dproj

@@ -125,8 +125,10 @@
     <PropertyGroup Condition="'$(Cfg_2_Win64)'!=''">
         <AppEnableRuntimeThemes>true</AppEnableRuntimeThemes>
         <AppDPIAwarenessMode>PerMonitorV2</AppDPIAwarenessMode>
-        <VerInfo_Build>6</VerInfo_Build>
-        <VerInfo_Keys>CompanyName=;FileDescription=$(MSBuildProjectName);FileVersion=1.0.0.6;InternalName=;LegalCopyright=;LegalTrademarks=;OriginalFilename=;ProgramID=com.embarcadero.$(MSBuildProjectName);ProductName=$(MSBuildProjectName);ProductVersion=1.0.0.0;Comments=</VerInfo_Keys>
+        <VerInfo_Build>1</VerInfo_Build>
+        <VerInfo_Keys>CompanyName=;FileDescription=$(MSBuildProjectName);FileVersion=1.1.0.1;InternalName=;LegalCopyright=;LegalTrademarks=;OriginalFilename=;ProgramID=com.embarcadero.$(MSBuildProjectName);ProductName=$(MSBuildProjectName);ProductVersion=1.1.0.0;Comments=</VerInfo_Keys>
+        <VerInfo_MinorVer>1</VerInfo_MinorVer>
+        <VerInfo_Locale>11273</VerInfo_Locale>
     </PropertyGroup>
     <ItemGroup>
         <DelphiCompile Include="$(MainSource)">
@@ -181,15 +183,15 @@
                         <Overwrite>true</Overwrite>
                     </Platform>
                 </DeployFile>
-                <DeployFile LocalName="Win64\Debug\MultiKB_For_AutoHotkey.rsm" Configuration="Debug" Class="DebugSymbols">
+                <DeployFile LocalName="Win64\Debug\MultiKB_For_AutoHotkey.exe" Configuration="Debug" Class="ProjectOutput">
                     <Platform Name="Win64">
-                        <RemoteName>MultiKB_For_AutoHotkey.rsm</RemoteName>
+                        <RemoteName>MultiKB_For_AutoHotkey.exe</RemoteName>
                         <Overwrite>true</Overwrite>
                     </Platform>
                 </DeployFile>
-                <DeployFile LocalName="Win64\Debug\MultiKB_For_AutoHotkey.exe" Configuration="Debug" Class="ProjectOutput">
+                <DeployFile LocalName="Win64\Debug\MultiKB_For_AutoHotkey.rsm" Configuration="Debug" Class="DebugSymbols">
                     <Platform Name="Win64">
-                        <RemoteName>MultiKB_For_AutoHotkey.exe</RemoteName>
+                        <RemoteName>MultiKB_For_AutoHotkey.rsm</RemoteName>
                         <Overwrite>true</Overwrite>
                     </Platform>
                 </DeployFile>

README.md

@@ -35,6 +35,15 @@ or by "logging" key presses in AutoHotkey like this:
 
 MsgBox % "Keyboard: " . KeyboardNumber . " Key: " . VKeyCode
 
+#### Additional options (availaible only in Configuration.ini) ####
+Options will be added to Configuration file on Application close (when updating from older version run this app and close it). 
+CatchAll - default 1, Catch all keys on selected Keyboard without passing them to OS
+CatchVKCodes - default [empty], list of VKCodes to Catch (only if CatchAll=0), only thoes Keys will be Catched and passed to AutoHotkey, those Keys will not go to OS, list should be splited using coma, correct Codes are availaible in link in section above
+
+Example (Catch only Numpad 0-9):
+CatchAll=0
+CatchVKCodes=96,97,98,99,100,101,102,103,104,105
+
 ## Building from source ##
 
 To build this app you need Delphi IDE, it should work on most of Delphi versions (XE+), it doesn't require any external components or tools. I'm using Delphi 10.4 community edition (which is free).

src/Configuration.pas

@@ -5,7 +5,7 @@
 interface
 
 uses
-  System.SyncObjs, Devices, System.IniFiles;
+  System.SyncObjs, Devices, System.IniFiles, System.Generics.Collections;
 
 const
   gcConfigurationDir = 'MultiKeyboardForAutoHotkey\';
@@ -28,6 +28,9 @@   TConfiguration = class
       procedure SetDefaults;
       function GetIsChanged: Boolean;
 
+      procedure VKCodesStringListToList(const pList: TList<Integer>; const lVKCodesStr: string);
+      function ListToVKCodesStringList(const lList: TList<Integer>): string;
+
     protected // unsafe, require Lock
       function Load(const lPath: string): Boolean;
       function Save(const lPath: string): Boolean;
@@ -49,7 +52,7 @@   TConfiguration = class
 implementation
 
 uses
-  System.SysUtils, Winapi.Windows, SHFolder, Vcl.Dialogs;
+  System.SysUtils, Winapi.Windows, SHFolder, Vcl.Dialogs, Classes;
 
 function GetAppDataLocalPath: string;
 var
@@ -121,6 +124,18 @@ function TConfiguration.GetIsChanged: Boolean;
   end;
 end;
 
+function TConfiguration.ListToVKCodesStringList(const lList: TList<Integer>): string;
+begin
+  Result := '';
+  for var x: Integer := 0 to lList.Count - 1 do
+  begin
+    if x > 0 then
+      Result := Result + ',';
+
+    Result := Result + IntToStr(lList[x]);
+  end;
+end;
+
 function TConfiguration.Load(const lPath: string): Boolean;
 var
   lInitFile: TIniFile;
@@ -148,6 +163,13 @@ function TConfiguration.Load(const lPath: string): Boolean;
         lDevice.Number := lInitFile.ReadInteger(lSectionName, 'Number', -1);
         lDevice.SystemId := lInitFile.ReadString(lSectionName, 'SystemId', '');
 
+        lDevice.CatchAll := lInitFile.ReadBool(lSectionName, 'CatchAll', True);
+        if not lDevice.CatchAll then
+        begin
+          var lCatchListStr: string := lInitFile.ReadString(lSectionName, 'CatchVKCodes', '');
+          VKCodesStringListToList(lDevice.CatchList, lCatchListStr);
+        end;
+
         // validate before add
         if not lDevice.IsValid() then
           lDevice.Free
@@ -201,6 +223,9 @@ function TConfiguration.Save(const lPath: string): Boolean;
         lInitFile.WriteString(lSectionName, 'Name', fConfiguredDeviceList[x].Name);
         lInitFile.WriteInteger(lSectionName, 'Number', fConfiguredDeviceList[x].Number);
         lInitFile.WriteString(lSectionName, 'SystemId', fConfiguredDeviceList[x].SystemId);
+
+        lInitFile.WriteBool(lSectionName, 'CatchAll', fConfiguredDeviceList[x].CatchAll);
+        lInitFile.WriteString(lSectionName, 'CatchVKCodes', ListToVKCodesStringList(fConfiguredDeviceList[x].CatchList));
       end;
       lInitFile.UpdateFile;
     finally
@@ -246,6 +271,31 @@ procedure TConfiguration.UpdateDeviceList(const lDeviceList: TDeviceList; const
   end;
 end;
 
+procedure TConfiguration.VKCodesStringListToList(const pList: TList<Integer>; const lVKCodesStr: string);
+begin
+  if lVKCodesStr = '' then
+  begin
+    pList.Clear;
+    Exit;
+  end;
+
+  var lStringList: TStringList := TStringList.Create;
+  try
+    lStringList.StrictDelimiter := True;
+    lStringList.Delimiter := ',';
+    lStringList.DelimitedText := lVKCodesStr;
+
+    for var x: Integer := 0 to lStringList.Count - 1 do
+    begin
+      var lVKCode: Integer := StrToIntDef(Trim(lStringList[x]), -1);
+      if (lVKCode > -1) then
+        pList.Add(lVKCode);
+    end;
+  finally
+    FreeAndNil(lStringList);
+  end;
+end;
+
 initialization
   gConfiguration := TConfiguration.Create;
 

src/Devices.pas

@@ -12,9 +12,14 @@ interface
 
   TDevice = class(TPersistent)
     private
-      fEnabled: Boolean; // user provided information
-      fName: string; // user provided information
-      fNumber: Integer; // user provided information
+      // user provided information
+      fEnabled: Boolean;
+      fName: string;
+      fNumber: Integer;
+
+      fCatchAll: Boolean;
+      fCatchList: TList<Integer>;
+      // end user provided information
 
       fSystemId: string; // unique for device and port
       fHandle: THandle; // unique "at this moment"
@@ -28,7 +33,8 @@   TDevice = class(TPersistent)
         Shift: TKeyDirection;
       end;
 
-      constructor Create;
+      constructor Create; reintroduce;
+      destructor Destroy; override;
 
       function Clone: TDevice;
       procedure Assign(Source: TPersistent); override;
@@ -38,11 +44,15 @@   TDevice = class(TPersistent)
       function IsDeviceConfigured: Boolean;
       function IsDeviceEnabled: Boolean;
       function IsValid: Boolean;
+      function IsVKCodeOnCatchList(const lVKCode: Byte): Boolean;
 
       property Enabled: Boolean read fEnabled write fEnabled;
       property Name: string read fName write fName;
       property Number: Integer read fNumber write fNumber;
 
+      property CatchAll: Boolean read fCatchAll write fCatchAll;
+      property CatchList: TList<Integer> read fCatchList;
+
       property SystemId: string read fSystemId write fSystemId;
       property Handle: THandle read fHandle write fHandle;
   end;
@@ -223,6 +233,11 @@ procedure TDevice.Assign(Source: TPersistent);
     fEnabled := lDevice.Enabled;
     fName := lDevice.Name;
     fNumber := lDevice.Number;
+
+    fCatchAll := lDevice.fCatchAll;
+    for var x: Integer := 0 to lDevice.fCatchList.Count - 1 do
+      fCatchList.Add(lDevice.fCatchList[x]);
+
     fSystemId := lDevice.SystemId;
     fHandle := lDevice.Handle;
   end
@@ -238,6 +253,11 @@ function TDevice.Clone: TDevice;
 
 constructor TDevice.Create;
 begin
+  inherited;
+
+  fCatchAll := True;
+  fCatchList := TList<Integer>.Create();
+
   State.LeftAlt := kdUp;
   State.RightAlt := kdUp;
   State.LeftCtrl := kdUp;
@@ -247,6 +267,12 @@ constructor TDevice.Create;
   fHandle := INVALID_HANDLE_VALUE;
 end;
 
+destructor TDevice.Destroy;
+begin
+  FreeAndNil(fCatchList);
+  inherited;
+end;
+
 procedure TDevice.FillUserData(const lDevice: TDevice);
 begin
   // this data was provided by user
@@ -270,4 +296,15 @@ function TDevice.IsValid: Boolean;
   Result := IsDeviceConfigured() and (SystemId <> '');
 end;
 
+function TDevice.IsVKCodeOnCatchList(const lVKCode: Byte): Boolean;
+begin
+  for var x: Integer := 0 to fCatchList.Count - 1 do
+  begin
+    if lVKCode = fCatchList[x] then
+      Exit(True);
+  end;
+
+  Result := False;
+end;
+
 end.

src/Engine.pas

@@ -277,7 +277,9 @@ procedure TEngine.OnHookMessage(var Message: TMessage);
   lKS: TKeyStroke;
   lDoBlock: Boolean;
 begin
-   // hook message has no device ID so we need RawInput for that
+  lDoBlock := False;
+
+  // hook message has no device ID so we need RawInput for that
   fLock.Enter;
   try
     lKS := ConvertHookMessageToKeyStroke(Message.WParam, Message.LParam);
@@ -288,19 +290,18 @@ procedure TEngine.OnHookMessage(var Message: TMessage);
 
       if Assigned(lKS.Device) then
       begin
-        // uopdate current state of special control keys for this device
+        // update current state of special control keys for this device
         UpdateControlKeyStateForDevice(lKS.Device, lKS);
 
-        // send keystroke to AutoHotkey
-        KeyStrokeToAutoHotkey(lKS);
+        if lKS.IsOnCatchList() then
+        begin
+          // send keystroke to AutoHotkey
+          KeyStrokeToAutoHotkey(lKS);
 
-        lDoBlock := True;
-      end
-      else
-        lDoBlock := False;
-    end
-    else
-      lDoBlock := False;
+          lDoBlock := True;
+        end;
+      end;
+    end;
   finally
     fLock.Leave;
   end;

src/KeyStroke.pas

@@ -21,6 +21,7 @@   TKeyStroke = record
     IsExtendedKey: Boolean;
 
     function IsEqual(const lKeyStroke: TKeyStroke): Boolean;
+    function IsOnCatchList(): Boolean;
   end;
 
   TKeyLogItem = record
@@ -72,6 +73,14 @@ function TKeyStroke.IsEqual(const lKeyStroke: TKeyStroke): Boolean;
   Result := (VKeyCode = lKeyStroke.VKeyCode) and (Direction = lKeyStroke.Direction);
 end;
 
+function TKeyStroke.IsOnCatchList: Boolean;
+begin
+  if not Assigned(Device) then
+    Exit(False);
+
+  Result := Device.CatchAll or Device.IsVKCodeOnCatchList(VKeyCode);
+end;
+
 end.