Call a procedure that is on another form - C++ winforms

Question

Hi friends,

I have 2 forms (Form1 and Form2). In Form1 I have a routine that accesses a bank and fills 2 textBoxes. How can I click a button on Form2 and execute this procedure that is on Form1?

I tried everything within my limits, but I couldn’t. And I don’t even know if it’s possible in C++

Thank you

Taveira

Answer 1

Hi @Anonymous ,

According to your description, I think you are using C++/CLI, so I spent some time to realize your needs.

In the following code, MyForm is the main form and MyForm1 is the secondary form.

MyForm.h

public:  
MyForm(void)  
{  
InitializeComponent();  
//  
//TODO: Add the constructor code here  
//  
}  
  
               public:  
                property System::Windows::Forms::TextBox ^  
                    txt1 {  
                      System::Windows::Forms::TextBox ^ get() {  
                        return textBox1;  
                      } void set(System::Windows::Forms::TextBox ^ value) {  
                        textBox1 = value;  
                      }  
                    }  
  
                    public  
                    : property System::Windows::Forms::TextBox ^  
                      txt2 {  
                        System::Windows::Forms::TextBox ^ get() {  
                          return textBox2;  
                        } void set(System::Windows::Forms::TextBox ^ value) {  
                          textBox2 = value;  
                        }  
                      }  

In this example, I added a button to the secondary form to pass values to the TextBox.

MyForm1.h

     private:  
            System::Void button1_Click(System::Object ^ sender,  
                                       System::EventArgs ^ e) {  
        MyForm ^ form1 = (MyForm^)Application::OpenForms["MyForm"];  
         
        form1->txt1->Text = "test1";  
        form1->txt2->Text = "test2";  

MyForm.cpp

#include "MyForm.h"  
#include "MyForm1.h"  
using namespace Project50;  
using namespace System;  
using namespace System::Windows::Forms;  
  
[STAThreadAttribute]  
  
    int main(array<System::String ^> ^ args)  
  
{  
  Application::EnableVisualStyles();  
  Application::SetCompatibleTextRenderingDefault(false);  
  MyForm form;  
  MyForm1 form2;  
  form2.Show();  
  Application::Run(% form);  
  return 0;  
}  

Best regards,

Elya

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