如何在视类上创建一个按钮?这样为何没用?
void CAddButtonView::OnA() //菜单处理函数
{
// TODO: Add your command handler code here
CMainFrame *pMain=(CMainFrame *)AfxGetApp()->m_pMainWnd;
HWND hView = pMain->GetActiveView()->m_hWnd;
CreateWindow("button","hello",WS_CHILD|WS_VISIBLE,
10,10,50,20,pMain->hView ,(HMENU)ID_PUSH,::AfxGetInstanceHandle(),NULL);
}