how can i get modem port in combo box

[kvk1989 2]

hi,

i get comport in combobox but i want add modem port in combobox 

can someone help me ?

here is my comport codes 

and here modem port registry guid <{4d36e96d-e325-11ce-bfc1-08002be10318}>

thanks !!

<                         >

unit USBPort;

interface

uses
  Winapi.Windows, System.SysUtils, System.Variants, System.Classes, SetupApi,
  System.Win.Registry, Vcl.StdCtrls, Vcl.Graphics;

const
  GUID_DEVINTERFACE_COMPORT: TGUID = '{86E0D1E0-8089-11D0-9CE4-08003E301F73}';

 procedure SearchPort(cb: Tcombobox);
 Function GetPort(port:string):string;

implementation

uses Unit1;

function SetupEnumAvailableComPorts: TstringList;
var
  RequiredSize: Cardinal;
  GUIDSize: DWORD;
  Guid: TGUID;
  DevInfoHandle: HDEVINFO;
  DeviceInfoData: TSPDevInfoData;
  MemberIndex: Cardinal;
  PropertyRegDataType: DWord;
  RegProperty: Cardinal;
  RegTyp: Cardinal;
  Key: Hkey;
  Info: TRegKeyInfo;
  S1, S2: string;
  hc: THandle;
begin
  Result := Nil;
  if not LoadsetupAPI then
    exit;
  try
    GUIDSize := 1;
    if SetupDiClassGuidsFromName('Ports', @Guid, GUIDSize, RequiredSize) then
    begin
      DevInfoHandle := SetupDiGetClassDevs(@Guid, Nil, 0, DIGCF_PRESENT);
      if Cardinal(DevInfoHandle) <> Invalid_Handle_Value then
      begin
        try
          MemberIndex := 0;
          result := TStringList.Create;
          repeat
            FillChar(DeviceInfoData, SizeOf(DeviceInfoData), 0);
            DeviceInfoData.cbSize := SizeOf(DeviceInfoData);

            if not SetupDiEnumDeviceInfo(DevInfoHandle, MemberIndex, DeviceInfoData) then
              break;
            RegProperty := SPDRP_FriendlyName;
            SetupDiGetDeviceRegistryProperty(DevInfoHandle, DeviceInfoData, RegProperty, PropertyRegDataType, NIL, 0, RequiredSize);
            SetLength(S1, RequiredSize);

            if SetupDiGetDeviceRegistryProperty(DevInfoHandle, DeviceInfoData, RegProperty, PropertyRegDataType, @S1[1], RequiredSize, RequiredSize) then
            begin
              Key := SetupDiOpenDevRegKey(DevInfoHandle, DeviceInfoData, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_READ);
              if Key <> INValid_Handle_Value then
              begin
                FillChar(Info, SizeOf(Info), 0);
                if RegQueryInfoKey(Key, nil, nil, nil, @Info.NumSubKeys, @Info.MaxSubKeyLen, nil, @Info.NumValues, @Info.MaxValueLen, @Info.MaxDataLen, nil, @Info.FileTime) = ERROR_SUCCESS then
                begin
                  RequiredSize := Info.MaxValueLen + 1;
                  SetLength(S2, RequiredSize);
                  if RegQueryValueEx(Key, 'PortName', Nil, @RegTyp, @S2[1], @RequiredSize) = Error_Success then
                  begin
                    if (Pos('COM', S2) = 1) then
                    begin
                      hc := CreateFile(pchar('\\.\' + S2 + #0), GENERIC_READ or GENERIC_WRITE, 0, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
                      if hc <> INVALID_HANDLE_VALUE then
                      begin
                        Result.Add(StrPas(PChar(S1)));
                        CloseHandle(hc);
                      end;
                    end;
                  end;
                end;
                RegCloseKey(Key);
              end;
            end;
            Inc(MemberIndex);
          until False;
          if Result.Count = 0 then
          begin
            Result.Free;
            Result := NIL;

          end
        finally
          SetupDiDestroyDeviceInfoList(DevInfoHandle);
        end;
      end;
    end;
  finally
    UnloadSetupApi;
  end;
end;

procedure SearchPort(cb: Tcombobox);
var
  ComPortString: TStringList;
  i: integer;
  nameport: string;
begin
  cb.Items.Clear;
  ComPortString := TStringList.Create;
  try
    ComPortString := SetupEnumAvailableComPorts;
    if (ComPortString <> nil) and (ComPortString.Count > 0) then
    begin
      for i := 0 to ComPortString.Count - 1 do
      begin
        nameport := ComPortString[i].trim;
        cb.items.add(nameport);
        cb.itemindex := 0;
      end;
    end;
  finally
    ComPortString.free;
  end;
end;

Function GetPort(port:string):string;
begin
  result := RightStr(port, 7).Replace('(', '').Replace('C', '').Replace('O', '').Replace('M', '').Replace(')', '').trim;
end;

end.

 

[Angus Robertson 527]

I released Magenta Serial Port Detection Component free earlier this year, part of Magenta Hardware Components  at:

 

https://www.magsys.co.uk/delphi/maghardware.asp

 

It finds serial ports by several methods. 

 

Angus

[kvk1989 2]

14 hours ago, Angus Robertson said:

I released Magenta Serial Port Detection Component free earlier this year, part of Magenta Hardware Components  at:

 

https://www.magsys.co.uk/delphi/maghardware.asp

 

It finds serial ports by several methods. 

 

Angus

Thanks for your component but there is any demos project available? 

[Angus Robertson 527]

The Magenta Hardware Components download includes compiled demos for all the components.

 

Angus

 

[kvk1989 2]

19 hours ago, Angus Robertson said:

The Magenta Hardware Components download includes compiled demos for all the components.

 

Angus

 

hi, i want to add modem port see here in this pic

Edited March 28, 2022 by kvk1989

[kvk1989 2]

after install component its show error

 

[Angus Robertson 527]

The Ansi warnings relate to my updated version of AsyncPro adport.pas unit that allows named COM ports to be opened, but this is for 4.06, not recent Unicode versions, you'd need to update whatever Async Pro you are using with my very minor changes.

 

Strange the component did not find one of your modems, although it did find 18 other COM ports you've previously installed.  Can only guess Samsung has installed it using keys, you'd need to check what they are and update the component. 

 

Angus

 

[Angus Robertson 527]

Did you work out the Device Installation Class under which your modems are installed, other than Modem or Ports?   It should be a single line change to enumerate a new class. 

 

Angus

 

[kvk1989 2]

On 3/26/2022 at 3:03 PM, Angus Robertson said:

8 hours ago, Angus Robertson said:

Did you work out the Device Installation Class under which your modems are installed, other than Modem or Ports?   It should be a single line change to enumerate a new class. 

 

Angus

 

yes today I have to work on it and then I will tell what I have found