C++ example

Use array

Use javascrit functions

#pragma once

#include <msclr/marshal_cppstd.h>

namespace YourNamespace {

using namespace System;
    using namespace System::Windows::Forms;

public ref class Form1 : public System::Windows::Forms::Form
    {
    public:
        Form1() {
            InitializeComponent();

// Load an HTML file or set the DocumentText property with your HTML content
            webBrowser1->DocumentText = "<html><head><script type='text/javascript'>function addNumbers(a, b) { return a + b; }</script></head><body></body></html>";
        }

private:
        void button1_Click(System::Object^ sender, System::EventArgs^ e) {
            // Execute the JavaScript function and retrieve the return value
            Object^ result = webBrowser1->Document->InvokeScript("addNumbers", gcnew array<Object^> {5, 10});

if (result != nullptr) {
                MessageBox::Show("Result from JavaScript function: " + result->ToString(), "JavaScript Result");
            }
            else {
                MessageBox::Show("No result from JavaScript function", "JavaScript Result");
            }
        }

#pragma region Windows Form Designer generated code
    private:
        void InitializeComponent(void) {
            this->webBrowser1 = (gcnew System::Windows::Forms::WebBrowser());
            this->button1 = (gcnew System::Windows::Forms::Button());
            this->SuspendLayout();
            // 
            // webBrowser1
            // 
            this->webBrowser1->Location = System::Drawing::Point(12, 12);
            this->webBrowser1->MinimumSize = System::Drawing::Size(20, 20);
            this->webBrowser1->Name = L"webBrowser1";
            this->webBrowser1->Size = System::Drawing::Size(776, 400);
            this->webBrowser1->TabIndex = 0;
            // 
            // button1
            // 
            this->button1->Location = System::Drawing::Point(12, 418);
            this->button1->Name = L"button1";
            this->button1->Size = System::Drawing::Size(75, 23);
            this->button1->TabIndex = 1;
            this->button1->Text = L"Invoke JS";
            this->button1->UseVisualStyleBackColor = true;
            this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
            // 
            // Form1
            // 
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(800, 450);
            this->Controls->Add(this->button1);
            this->Controls->Add(this->webBrowser1);
            this->Name = L"Form1";
            this->Text = L"JavaScript Function Invocation";
            this->ResumeLayout(false);
        }
#pragma endregion

private:
        System::Windows::Forms::WebBrowser^ webBrowser1;
        System::Windows::Forms::Button^ button1;
    };
}

How get text from another windows