comport output

[kvk1989 2]

hello all !

can someone help me to get comport output in combobox ?

 

output like this

Edited November 27, 2021 by kvk1989

[Stano 143]

Humenne, I know that. I live here.

[kvk1989 2]

Hi , 

Please share if you have

[limelect 48]

Put the picture here so we can see what you are talking about.

Cannot download the picture

[kvk1989 2]

.

Edited November 27, 2021 by kvk1989
Sorry

[kvk1989 2]

43 minutes ago, limelect said:

Put the picture here so we can see what you are talking about.

Cannot download the picture

 

[Angus Robertson 577]

So you are looking for the friendly names for serial COM ports?  There are various methods to find them, depending on how were installed:

 

1 - Enumerate HLM\HARDWARE\DEVICEMAP\SERIALCOMM registry
2 - Enumerate Device Installation Class 'Ports' which finds most serial ports including USB
3 - Optionally add Disabled 'Ports' (hardware not currently installed)
4 - Enumerate Device Installation Class 'CNCPorts' (used by com0com serial port emulator)
5 - Enumerate Device Installation Class 'Modem' which finds USB and internal modems

 

I have an old component that does all this, never got around to publishing it, maybe in December.

 

Angus

[limelect 48]

@kvk1989 It seems you do not understand

Your link does not work

PUT your picture here

 

[kvk1989 2]

7 hours ago, limelect said:

@kvk1989 It seems you do not understand

Your link does not work

PUT your picture here

 

 

[kvk1989 2]

hi all,

problem solved thanks for all !

 

unit USBPort;

interface

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

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

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

implementation

uses Dos, Emmcdl, Unit1, XMLparser;

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(PansiChar(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.

 

[limelect 48]

@kvk1989 I wander what is Fungsi.pas?