Discussion of article "How to create bots for Telegram in MQL5" - page 16

[Herman Makmur]

Has anybody tried BOLD or ITALIC fonts using this library?
I have tried **bold** __italic__ with markdown in the message as follows but no cigar...

"n**boldtext** __italictext__ Balance: $%s parse_mode=MARKDOWN"

The result is: 

**boldtext** __italictext__ Balance: $10056.21 parse_mode=MARKDOWN

[Herman Makmur]

Never mind....

I found the answer by setting AsHTML flag to true...

bot.SendMessage(InpTelegramId,"<b>Balance: $10056.21</b>",true);

Sorry...

spottypegasus:

Has anybody tried BOLD or ITALIC fonts using this library?
I have tried **bold** __italic__ with markdown in the message as follows but no cigar...

"n**boldtext** __italictext__ Balance: $%s parse_mode=MARKDOWN"

The result is: 

**boldtext** __italictext__ Balance: $10056.21 parse_mode=MARKDOWN

[Tomasz Maria Burzanowski]

Hi all,

Maybe some of you can help, I'm desperately trying to find a solution to send a local screenshot via MT4 to Telegram.

Quick code snipped

int res=bot.SendMessage(-100135482xxx,"Running a test " +TimeToString(TimeCurrent()));
int ac=bot.SendChatAction(-100135482xxx,ACTION_UPLOAD_PHOTO);
int pic=bot.SendPhoto(filepath+"\mypic.gif",-100135482xxx,filepath);

First one works, as I'm getting the message, even if I use @channelname

Second one works only with chatID, which is ok, I can live with it

Third one is throwing me the error:

2020.08.07 21:40:15.175 xxx1: {"ok":false,"error_code":400,"description":"Bad Request: chat not found"}

Any idea, what I'm doing wrong?

[Marco vd Heijden]

Tomasz Maria Burzanowski:

Hi all,

Maybe some of you can help, I'm desperately trying to find a solution to send a local screenshot via MT4 to Telegram.

Quick code snipped

First one works, as I'm getting the message, even if I use @channelname

Second one works only with chatID, which is ok, I can live with it

Third one is throwing me the error:

2020.08.07 21:40:15.175 xxx1: {"ok":false,"error_code":400,"description":"Bad Request: chat not found"}

Any idea, what I'm doing wrong?

yes you have to modify the mqh file so that it accepts that negative number.

[Tomasz Maria Burzanowski]

@Marco vd Heijden thanks!

This is interesting I had a look at Telegram.mqh and I see three functions for SendPhoto, out of which I'm wondering how the code knows which one to use. The third one is anyway out of the question.

First:

   int SendPhoto(string &_photo_id,
                 const long _chat_id,
                 const string _local_path,
                 const string _caption=NULL,
                 const bool _common_flag=false,
                 const int _timeout=10000)

Second:

int SendPhoto(string &_photo_id,
                 const string _channel_name,
                 const string _local_path,
                 const string _caption=NULL,
                 const bool _common_flag=false,
                 const int _timeout=10000)

Could it be that the code does not know which one I want to take? I'm trying to trigger the first one, but actually the second one would be better.

Secondly I tried to search in the first function what is happening with _chat_id, but I can only see a simple integer to string conversion:

ArrayAdd(data,"\r\n");
      ArrayAdd(data,"--"+hash+"\r\n");
      ArrayAdd(data,"Content-Disposition: form-data; name=\"chat_id\"\r\n");
      ArrayAdd(data,"\r\n");
      ArrayAdd(data,IntegerToString(_chat_id));
      ArrayAdd(data,"\r\n");

[Jefferson Judge Metha]

Tomasz Maria Burzanowski:

notice second parameter one is a long the other is a string

 const long _chat_id,

and 

const string _channel_name,

this is part of mql basics u can have million functions with the same name with different parameters or number of parameters 

[Tomasz Maria Burzanowski]

@Jefferson Metha yes I do understand that, it was just my thought, as it's been so tough to find the issues.

I used now the tips described in https://www.mql5.com/en/forum/89826/page15#comment_17079865, but still not getting anywhere.

I'd like to focus on the sendPhoto function where the input is Channel name, not chat ID, so let's solely focus on one thing.

What I did so far, in Telegarm.mqh in the function

   int SendPhoto(string &_photo_id,
                 const string _channel_name,
                 const string _local_path,
                 const string _caption=NULL,
                 const bool _common_flag=false,
                 const int _timeout=10000)

I've modified the following line:

      string name=StringTrim(_channel_name);
      name=_channel_name;
      /*if(StringGetCharacter(name,0)!='@') TB 09.08
         name="@"+name;*/

Basically removing the StringTrim function, but it's not getting better.

[Tomasz Maria Burzanowski]

Finally figured it out.

Changes:

int SendPhoto(string &_photo_id,
                 const string _channel_name,
                 const string _local_path,
                 const string _caption=NULL,
                 const int _common_flag=0,//Changed to int not bool
                 const int _timeout=10000)

Removed:

string name=StringTrim(_channel_name);
      if(StringGetCharacter(name,0)!='@')
         name="@"+name;

And finally in the EA, as simple as:

string filepath = "mypic.gif";
string photo_id;
int pic=bot.SendPhoto(photo_id,InpChannelName,filepath);

[Riedwaan Shaheed Patel]

Thank you for your effort in composing this article! Extremely helpful for a newbie

[Indra Lukmana]

Hi all,

I dunno if this question have been asked previously, 

I tried this modul with EA format and it works wonderfully, however when i tries this modul with indicator format, it shows an error as below:

2020.08.26 10:25:37.839 inLuk_TelegramBot EURUSD,H1: Error: URL does not allowed for WebRequest

any suggestion ? or this modul can't be work on indicator? 

thanks.