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CEdit *pEdit = (CEdit *)GetDlgItem(IDC_EDIT1);
if(pEdit )
{
DWORD dwStyle =pEdit ->GetStyle();
dwStyle |= ES_UPPERCASE;
SetWindowLong(pEdit ->GetSafeHwnd(), GWL_STYLE, dwStyle);
}
CEdit *pEdit = (CEdit *)GetDlgItem(IDC_EDIT1);
if(pEdit)
{
//原来的数据先改为大写
CString szVal;
pEdit->GetWindowText(szVal);
szVal.MakeUpper();
pEdit->SetWindowText(szVal);
//修改大写风格
pEdit->ModifyStyle(0, ES_UPPERCASE, SWP_FRAMECHANGED|SWP_DEFERERASE);
}