//建立mfc对话框，然后在ok中加事件

void CEg2Dlg::OnOK()
{
 // TODO: Add extra validation here
 CFont font;
 font.CreatePointFont(200,"Arial");
 GetDlgItem(IDC_STATIC)->SetWindowText("Hello vc++");
 GetDlgItem(IDC_STATIC)->SetFont(&font);
 //CDialog::OnOK();
}

＝＝＝＝＝＝

//再看常量与变量

//常量是不可改变的，但
＃i nclude <iostream>
＃i nclude <string>
using namespace std;

void main()
{
 const int MAX=10;
 *(int*)&MAX=5;
 cout<<MAX<<endl;
}
========
//常量是不可改变的，但
＃i nclude <iostream>
＃i nclude <string>
using namespace std;

void main()
{
 const int MAX=10;
 *(int*)&MAX=5; //间常修改常量
 int var = *(int*)&MAX;
 cout<<var<<endl;
 cout<<MAX<<endl;
}
===========