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分享CRichEditCtrl::GetLine出错
int nLineLength, nLineIndex, nLineCount = m_myRichEditCtrl.GetLineCount();
CString strText, strLine;
for (int i = 0; i < nLineCount; i++)
{
nLineIndex = m_myRichEditCtrl.LineIndex(i);
nLineLength = m_myRichEditCtrl.LineLength(nLineIndex);
m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength);
strText.SetAt(nLineLength, _T('\0')); // null terminate
strText.ReleaseBuffer(nLineLength + 1);
TRACE(_T("line %d: '%s'\r\n"), i, strText);
}
上面代码是来自：MSDN.
CRichEditCtrl控件内有两行内容:
“LKASFJAASDLFKA
G”
注意：当第二行只有一个字母，取第二内容时，运行到GetLine时就异常报错。请教大家，谢谢啦
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果菲 2010-07-16
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m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength);
nLineLength这个值要大于或等于4
因为ENSURE(sizeof(nMaxLength)<=nMaxLength*sizeof(TCHAR)&&nMaxLength>0)；中的：
sizeof(nMaxLength)<=nMaxLength*sizeof(TCHAR)（ 4<=nMaxLength*1）
所以nMaxLength要大于或等于4
nLineLength这个值要大于或等于4
因为ENSURE(sizeof(nMaxLength)<=nMaxLength*sizeof(TCHAR)&&nMaxLength>0)；中的：
sizeof(nMaxLength)<=nMaxLength*sizeof(TCHAR)（ 4<=nMaxLength*1）
所以nMaxLength要大于或等于4
Eleven 2010-07-15
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m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength);
-->
m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength+1);
-->
m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength+1);
Eleven 2010-07-15
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m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength);
-->
m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength+1);
-->
m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength+1);
muzizongheng 2010-07-15
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[Quote=引用 1 楼 flightboy1109 的回复:]
m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength);
把这个代码改成：
m_myRichEditCtrl.GetLine(i, strText.GetBuffer(nLineLength));
返回的结果：strText为空。
[/Quote]
改成m_myRichEditCtrl.GetLine(i, strText.GetBuffer(0));
。。。。
strText.ReleaseBuffer();
m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength);
把这个代码改成：
m_myRichEditCtrl.GetLine(i, strText.GetBuffer(nLineLength));
返回的结果：strText为空。
[/Quote]
改成m_myRichEditCtrl.GetLine(i, strText.GetBuffer(0));
。。。。
strText.ReleaseBuffer();
果菲 2010-07-15
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ENSURE(sizeof(nMaxLength)<=nMaxLength*sizeof(TCHAR)&&nMaxLength>0)；报错的地方
果菲 2010-07-15
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m_myRichEditCtrl.GetLine(i, strText.GetBufferSetLength(nLineLength + 1), nLineLength);
把这个代码改成：
m_myRichEditCtrl.GetLine(i, strText.GetBuffer(nLineLength));
返回的结果：strText为空。
把这个代码改成：
m_myRichEditCtrl.GetLine(i, strText.GetBuffer(nLineLength));
返回的结果：strText为空。
