Questions about hidden text in RichEdit

Painkiller_Silv

I wrote the following program, I don't know why the selected text is not hidden (not displayed on the interface)?
long nPos = m_rEdit_Src_Ctl.FindText (0,&ft);
m_rEdit_Src_Ctl.SetSel (0, nPos + 3); / * nPos must be greater than 0 * /
m_rEdit_Src_Ctl.HideSelection (TRUE, FALSE);

wqkbosss

Read MSDN
There is such a sentence
It is the explanation of the first parameter of the HideSelection () function:
Indicates if the selection should be shown or hidden, TRUE to hide the selection.
According to my understanding
If FALSE is to display the selected text, TRUE does not display
But Lou's main understanding is not to hide and show
When it is FALSE, it will turn the selected text background to black, which is shown
If TRUE, it wo n’t be black, and of course you do n’t know which text is selected

Personal understanding should be like this!