Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Calling a C++ Builder function and passing parameters from a Javascript function
#3
Hi Gambit, thank you for the answer. I find a way to make it work, but not exactly as i wanted.

The way is follow:

First i need to create a function (callback) in my C++ code, like that:

void __fastcall TIWForm1::function(TStringList *EventParams)
{
        ShowMessage("Hello Cruel World!");
}



Then i need to register this function as a callback function. In the OnCreate Event of my form, i just add this code:

WebApplication->RegisterCallBack("function",function);

After that, i need to send to client side what Ajax event i will use to trigger my server side C++ function:

AddToInitProc("function myAjaxFunction(){ executeAjaxEvent('&value=1234', null,'function',false, null, false);}") ;

So i create some div dynamically in OnCreate event:

AddToInitProc("var myDiv = document.createElement('div');") ;
AddToInitProc("myDiv.id = 'MyDivID'") ;
AddToInitProc("myDiv.className = 'MyDivClass'") ;
AddToInitProc("document.getElementById('OtherDiv').appendChild(myDiv)) ;
AddToInitProc("myDiv.onclick = myAjaxFunction") ;


When i click on myDiv i can call the "function" in the server side but ONLY IF MY INTRAWEB FORM HAVE THIS CODE ON IT: 

void setAsMainForm() {

  TWebMainForm::SetAsMainForm();
 }
#pragma startup setAsMainForm

The problem is that i need to handle Ajax events in all my forms.

How to solve this?

Thank you!
Reply


Messages In This Thread
RE: Calling a C++ Builder function and passing parameters from a Javascript function - by amine1980 - 03-28-2019, 01:07 PM

Forum Jump:


Users browsing this thread: 1 Guest(s)