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<P ALIGN=CENTER><BIG><BIG><BIG><STRONG>RichEditCtrl and protected chars</STRONG></BIG></BIG></BIG>
<P ALIGN=CENTER><EM>Posted by <STRONG><A HREF="mailto:fpetitje@bureauveritas.com">F. Petitjean</A></STRONG> on <STRONG>4/22/98 5:51a.m.</STRONG></EM></P>
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<P>environment VC++5.0 winNT SP3
<P>In a SDI application, the user can select an item in a ListBox and he is presented a command template in a CrichEditView derived window. I fill in the content of the RichEditCtrl with StreamIn() function and it works as expected.
<P>Next, I have added following functionnality : all characters that are displayed bold are marked with the protected attributes. (They represent keywords and should not be modified so that the sentence can be parsed and interpreted). The OnProtected() handler is called if I try to modify a protected part (right) but also (bad) from the StreamIn() function even though I have tried to reset the contents with :
<BR>if ( GetRichEditCtrl().GetTextLength() > 0 )
<BR>{
<BR>GetRichEditCtrl().SetWindowText( "" );
<BR>DeleteContents();
<BR>}
<P>How to say to the RichEditCtrl that I want to start with a new fresh content ?(and don't worry with protected chars). I don't want to reparse the old content just to get rid of the protected attributes.
<P>Here is the Onprotected management code :
<BR>void CCmd1View::OnInitialUpdate()
<BR>{
<BR> CRichEditView::OnInitialUpdate();
<BR>
<BR> // TODO: Add your specialized code here and/or call the base class
<BR> long eventmask = GetRichEditCtrl().GetEventMask() | ENM_PROTECTED ;
<BR> GetRichEditCtrl().SetEventMask( eventmask );
<BR>
<BR>}
<P>void CCmd1View::OnProtected( NMHDR * pNMHDR , LRESULT * pResult )
<BR>{
<BR> ENPROTECTED * pENPROTECTED = (ENPROTECTED *) pNMHDR;
<P> CHARFORMAT cf ;
<BR> cf.cbSize = sizeof( CHARFORMAT );
<BR> DWORD dwMask_c = GetRichEditCtrl().GetSelectionCharFormat( cf );
<P> if ( ( (cf.dwMask & CFM_BOLD) == CFM_BOLD ) && ( (cf.dwEffects & CFE_PROTECTED) == CFE_PROTECTED ) )
<BR> {
<BR> (void) ::MessageBeep( MB_ICONEXCLAMATION );
<BR> *pResult = TRUE ; // ne pas modifier!
<BR> *pResult = 0L ; // tentative le 22 avril 1998 pour faire fonctionner browsing cdes
<BR> }
<BR> else
<BR> *pResult = 0L ;
<BR>}
<P>(Note: if I enforce the protection mechanism (*pResult = TRUE; ) the rich edit control refuse to change its content ).
<P>Thanks in advance.
</P>
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