GetCheckedRadioButton
2012-08-17 11:58
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GetCheckedRadioButton
CWnd::GetCheckedRadioButton函数功能:在给定的一组单选框ID中获得当前被选中的单选按钮的ID
函数原型:int GetCheckedRadioButton( int nIDFirstButton, int nIDLastButton );
返回值: 当有被选中的单选框时返回被选中的单选框的ID ,如果所给的组中都没被选中则返回0
参数:
nIDFirstButton 单选框组中第一个整形值的ID
nIDLastButton 单选框组中最后一个整形值ID
以下是MFC的实现,循环迭代,找出被check的button。有时我们可以通过查看MFC的实现来学习具体函数。
int CWnd::GetCheckedRadioButton(int nIDFirstButton, int nIDLastButton) const
{
for (int nID = nIDFirstButton; nID <= nIDLastButton; nID++)
{
if (IsDlgButtonChecked(nID))
return nID; // id that matched
}
return 0; // invalid ID
}
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