Thread: Calling event from Dialog Box in C++?

Using VS 2010:

In the old style SDK I would use SendMessage with WM_COMMAND and create a unique ID to be processed in my WM_COMMAND event handler in the main WndProc.

How is this done in MFC (or whatever the code below is)?

I need to access controls on the main form from a dialog box. The dialog box is non-modal, so my main program continues on without waiting for the user to close the box and process the data from the form. Data on the dialog box needs to update a text box on the main form.

Please help! There are lots of answers out there and none of them have worked!

Thanks!

Deaneaux

Code:

////////// Main form code /////////////////
#include"stdafx.h"
#include"classes.h"
#include"frmMsgBox.h"

namespace MyApp {
	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;

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

...

// the label on the main form to be updated is created like this:
	private: System::Windows::Forms::Label^  label1;

...

// A typical event handler:
private: System::Void MyButton_Click(System::Object^  sender, System::EventArgs^  e) 
{ }

...

// Here is where my dialog box is called:
    frmMsgBox^ pForm= gcnew frmMsgBox;
    pForm->Show(); // It has to be non-modal! ShowDialog is not the answer!

...

//And in frmMsgBox.h, the dialog box is set up as follows:

////////// Dialog Box code /////////////////
namespace MyApp {
	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;
	using namespace System::Runtime::InteropServices;

	public ref class frmMsgBox : public System::Windows::Forms::Form
	{
	public:
		frmMsgBox(void)