从richrdit获取文本，设置文本

最新推荐文章于 2020-05-28 09:16:25 发布

转载最新推荐文章于 2020-05-28 09:16:25 发布 · 644 阅读

本文介绍了使用MFC框架在C++编程中如何通过IDC_EDITNAME获取控件的文本值，并通过CString进行文本的获取与验证。包括使用SetWindowText设置文本、使用GetWindowText获取文本、使用GetWindowTextLength查询文本长度的方法。

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// set the text in IDC_EDITNAME
CWnd* pWnd = GetDlgItem(IDC_EDITNAME);
pWnd->SetWindowText(_T("Gerald Samper"));

// Get the text back. CString is convenient, because MFC
// will automatically allocate enough memory to hold the
// text--no matter how large it is.

CString str;
pWnd->GetWindowText(str);
ASSERT(str == _T("Gerald Samper"));

// The LPTSTR override works, too, but it might be too short.
// If we supply a buffer that's too small, we'll only get those
// characters that fit.

TCHAR sz[10];
int nRet = pWnd->GetWindowText(sz, 10);

// Nine characters, plus terminating null
ASSERT(_tcscmp(sz, _T("Gerald Sa")) == 0);
ASSERT(nRet == 9);

// You can query the length of the text without the length of
// the string using CWnd::GetWindowTextLength()
nRet = pWnd->GetWindowTextLength();
ASSERT(nRet == 13);