Question

In my project there is one .cpp file which include main() function and one more function which I want to call from Form1.h on button click event.

My code:

My someting.cpp

main()
{

Application::Run(gcnew Form1());
return 0;
}

my_function()
{
 /code
}

My Form1.h

namespace somthing {
    //auto generated code

   private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e)
   {  
       my_function();   
   }
}

Answer 1

That’s because the .h file doesn’t know the content of the .cpp file.

Try declaring the body of your onClick in the .cpp file.