Change ICON of MFC Application and Dialog

#include "FirstApp.h"
#include "resource.h"

CFirstWnd::CFirstWnd()
{
Create(
NULL,
"My First Application",
WS_OVERLAPPEDWINDOW
);
}

BOOL CFirstApp::InitInstance()
{

m_pMainWnd=new CFirstWnd();
HICON hIcon=::LoadIcon(AfxGetInstanceHandle(),MAKEINTRESOURCE(AFX_ID_STD_FRAME));
m_pMainWnd->SetIcon(hIcon,FALSE);
m_pMainWnd->ShowWindow(m_nCmdShow);
m_pMainWnd->UpdateWindow();
return true;
}

CFirstApp firstApp;