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Intraweb Function Call from HTML - Printable Version

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Intraweb Function Call from HTML - amit.walters - 08-17-2020

I was using bootstrap components to make responsive size adjustable web application but the problem I am getting is all the component calls client side java script as far as I understood. 
it can call Java script Function written in the same page or it redirects to another page.
But can I call a custom function written in C++ in my web application as I can call it within the web application.


RE: Intraweb Function Call from HTML - Alexandre Machado - 08-18-2020

If I understand correctly, you basically want to call a function in your application, written in C++, from your page (i.e. an event from a component on that page). Is that correct?

If that's correct there are several ways to accomplish that. I don't have a C++ Builder demo ready, but there is one written in Delphi which should be quite simple for you to understand how it works. Please have a look:

https://github.com/Atozed/IntraWeb/tree/master/15/Delphi/NewCallback


RE: Intraweb Function Call from HTML - amit.walters - 08-19-2020

(08-18-2020, 12:17 PM)Alexandre Machado Wrote: If I understand correctly, you basically want to call a function in your application, written in C++, from your page (i.e. an event from a component on that page). Is that correct?

If that's correct there are several ways to accomplish that. I don't have a C++ Builder demo ready, but there is one written in Delphi which should be quite simple for you to understand how it works. Please have a look:

https://github.com/Atozed/IntraWeb/tree/master/15/Delphi/NewCallback

Yes sir,
That's correct. But I want to call it from HTML template page.
like calling from menu item.
if menu item selected [student list] i need to call loadstudentlist function. currently I am redirecting to another page and showing student list.


RE: Intraweb Function Call from HTML - Jose Nilton Pace - 08-19-2020

Hi, you can call from html template in your menu list, something like this:
Code:
<li><a href="#" onclick="return ajaxCall('YOUR_DELPHI_FUNCTION', 'parametermenulist=student_list');"><i class="fas fa-map-pin"></i><p>student_menu1</p></a></li>



RE: Intraweb Function Call from HTML - amit.walters - 08-20-2020

(08-19-2020, 11:45 AM)Jose Nilton Pace Wrote: Hi, you can call from html template in your menu list, something like this:
Code:
<li><a href="#" onclick="return ajaxCall('YOUR_DELPHI_FUNCTION', 'parametermenulist=student_list');"><i class="fas fa-map-pin"></i><p>student_menu1</p></a></li>
Thank you sir
It is working for me as I wanted.

Thanks to both of you.


RE: Intraweb Function Call from HTML - osvaldodala - 03-24-2023

(08-19-2020, 11:45 AM)Jose Nilton Pace Wrote: Hi, you can call from html template in your menu list, something like this:
Code:
<li><a href="#" onclick="return ajaxCall('YOUR_DELPHI_FUNCTION', 'parametermenulist=student_list');"><i class="fas fa-map-pin"></i><p>student_menu1</p></a></li>

Ilustre Jose Nilton,
Estou implementado o callback mas a expressão ajaxCall não está a ser identificado. É necessário declarar no ficheiro JQuery ou no delphi?
A mensagem de erro no console do brownser é a seguinte: "Uncaught ReferenceError: ajaxcall is not defined"

Ajude-me por favor...


RE: Intraweb Function Call from HTML - osvaldodala - 03-24-2023

Ilustres,
Preciso da vossa ajuda na implementação do callback, está retornando o seguinte erro na console do brownser: "Uncaught ReferenceError: ajaxcall is not defined"
Por favor!!!!!!

No formulario HTML:
<script>
function fncExecutarAcao(){
ajaxcall("procEventForm", "params=p1='Param1', p2='param2'");
}
</script>

<div class="dropdown-menu">
<a class="dropdown-item" href="#">Meu Perfil</a>
<a class="dropdown-item" href="#">Editar Perfil</a>
<a class="dropdown-item" href="#">Configuração</a>
<a class="dropdown-item" href="#" onclick="fncExecutarAcao();">Sair</a>
</div>










No Delphi:
unit ufrmIndex;

interface

uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, ufrmPadrao, IWVCLComponent,
IWBaseLayoutComponent, IWBaseContainerLayout, IWContainerLayout,
IWTemplateProcessorHTML, IWApplication, IWTypes, IWBaseComponent,
IWBaseHTMLComponent, IWBaseHTML40Component, IWVCLBaseControl, IWBaseControl,
IWBaseHTMLControl, IWControl, IWCompLabel;

type
TfrmIndex = class(TfrmPadrao)
procedure IWAppFormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
procedure procEventForm(EventParams: TStringList);
end;

var
frmIndex: TfrmIndex;

implementation

{$R *.dfm}

uses ufrmLogin;

{ TfrmIndex }

procedure TfrmIndex.IWAppFormCreate(Sender: TObject);
begin
inherited;

WebApplication.RegisterCallBack('procEventForm', procEventForm);

end;

procedure TfrmIndex.procEventForm(EventParams: TStringList);
var
s1 :TStringList;
I, CountParam :Integer;
S :String;
begin
s1 := TStringList.Create;
CountParam := 0;

try
s1.StrictDelimiter := True;
s1.CommaText := EventParams.Values['params'];
S := s1.CommaText;

CountParam := TStringList(s1).Count;

for I := 0 to pred(CountParam) do
WebApplication.ShowMessage(s1.ValueFromIndex[I]);

finally
s1.Free;
end;
end;

end.


RE: Intraweb Function Call from HTML - Jose Nilton Pace - 04-21-2023

ajaxCall is case sensitive
ajaxCall