为什么我无法在MFC中比较CString [英] Why i can't compare CString in MFC

问题描述

此行.

UpdateData(true);
if( m_OldPassword.Compare(d.pass) && m_NewPassword.Compare(m_ConfirmPassword) )

m_OldPassword，m_NewPassword，m_ConfirmPassword

m_OldPassword, m_NewPassword, m_ConfirmPassword

是我从EditControl中添加的变量

is variable i added from EditControl

m_OldPassword.Compare(d.pass)结果= true(已测试)

m_OldPassword.Compare(d.pass) Result =true (tested)

m_NewPassword.Compare(m_ConfirmPassword)结果=否.

IMPLEMENT_DYNAMIC(ChangePassword, CDialog)

ChangePassword::ChangePassword(CWnd* pParent /*=NULL*/)
    : CDialog(ChangePassword::IDD, pParent)
    , m_OldPassword(_T(""))
    , m_NewPassword(_T(""))
    , m_ConfirmPassword(_T(""))
{
}

我不知道发生了什么.我确定我的输入(新的，确认的)是正确的.

I dont know what's happen. I sure my input(new, confirm) is right.

推荐答案

您需要做

if( m_OldPassword.Compare(d.pass)==0 && m_NewPassword.Compare(m_ConfirmPassword)==0 )

如果要比较两个Cstring，请说abc和xyz
如果abc等于字符串xyz，它将返回0
如果abc大于字符串xyz，它将返回1
如果abc小于字符串xyz，它将返回-1

if you are comparing two Cstring say abc and xyz
if abc equal to the string xyz it will return 0
if abc greater than the string xyz it will return 1
if abc less than the string xyz it will return -1

这篇关于为什么我无法在MFC中比较CString的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！