mfc edit只允许输入数字

1、给EDIT控件添加 EN_CHANGE 事件

2、事件中的代码如下:

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CString strEditVidoe; GetDlgItem( iId )->GetWindowText( strEditVidoe ); // 只允许输数据 int nStringLength = strEditVidoe.GetLength();; // int nDotCount = 0;     // 点字符不能多于1个 //for ( int nIndex = 0; nIndex < nStringLength; nIndex++ ) //{ //  if ( strEditVidoe[ nIndex ] == '.' ) //  { //      nDotCount++; //      if ( nDotCount > 1 ) //      { //          CString csTmp; //          csTmp = strEditVidoe.Left( nIndex ); //          csTmp += strEditVidoe.Right( strEditVidoe.GetLength() - nIndex - 1 ); //          //csRadius = csRadius.Left( nIndex + 1 ) + csRadius.Right( nStringLength - ( nIndex + 1 ) - 1 ); //          GetDlgItem( iId)->SetWindowText( csTmp ); //          return; //      } //  } //} strEditVidoe[ nIndexm ] != '.' &&   // 不允许输入数字和点以外的字符 for ( int nIndexm = 0; nIndexm < nStringLength; nIndexm++ ) {     if ( ( strEditVidoe[ nIndexm ] > '9' || strEditVidoe[ nIndexm ] < '0' ) )     {         strEditVidoe = strEditVidoe.Left( nIndexm ) + strEditVidoe.Right( strEditVidoe.GetLength() - nIndexm - 1 );         GetDlgItem( iId )->SetWindowText( strEditVidoe );         return 0;     } } return 0;