int CMyAppView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
CButton *p_MyBut = new CButton();
p_MyBut->Create(_T("动态按钮"), WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, CRect(20,10,80,40), this, IDC_MYBUTTON );
}
中创建的一个按钮,在void CMyAppView::OnDestroy()
{
CView::OnDestroy(); // TODO: 在此处添加消息处理程序代码
if(p_MyBut)
delete p_MyBut;
}报错“p_MyBut”: 未声明的标识符
“delete”: 不能删除不是指针的对象
这是为什么呢?
CButton *p_MyBut = new CButton();
p_MyBut->Create(_T("动态按钮"), WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON , CRect(20,10,180,140), this, 123 ); //创建
p_MyBut->ShowWindow(SW_HIDE); //隐藏
里写 p_MyBut->ShowWindow(SW_HIDE); //隐藏另外,你的 CButton *p_MyBut = new CButton();
写全局里去,也就是写最上面去。