怎样得到CRichEditCtrl的每一行的字符数?

straybaby 2002-05-17 07:06:34
我是这样的:
int count = source.GetLineCount();
int nLineLength;
// source 是CRichEditCtrl对象
CString str;
for( int i= 0;i < count ; i ++)
{
nLineLength =source.LineLength(i);
source.GetLine(i, str.GetBuffer(nLineLength));
str.ReleaseBuffer(nLineLength);

}
不过每次调试,nLineLength只能得到第一行的字符数,其他的行nLineLength没有变,还是第一行的值。我不知道哪里出了错。
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straybaby 2002-05-17
thank you.
i had thonght about using LineIndex() before,but i carelessly deny it .
this time i use it again .it works fine.
: )
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karma 2002-05-17
According to MSDN documentation, the parameter LineLength() takes is not the line number:

CRichEditCtrl::LineLength
Retrieves the length of a line in a rich edit control.
int LineLength( int nLine = -1 ) const;

Parameters
nLine
Specifies the character index of a character in the line whose length is to be retrieved. If this parameter is –1, the length of the current line (the line that contains the caret) is returned, not including the length of any selected text within the line. When LineLength is called for a single-line edit control, this parameter is ignored.

Return Value
When LineLength is called for a multiple-line edit control, the return value is the length (in bytes) of the line specified by nLine. When LineLength is called for a single-line edit control, the return value is the length (in bytes) of the text in the edit control.


try something like

nLineLength =source.LineLength(source.LineIndex(i));
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