How can I set the number of spaces a tab is in a CRichEditView?

I tried that exact code.. I put it in my CRichEditView derived class in the OnInitialUpdate() function and it didnt do anything! How can I make it be just like VC++ text?

thanks!

The above code works on the selected text only. Call CRichEditCtrl::SetSel(0,-1). This will select all the text then do the code above.

Hope this helps.
-Ben

It all depends on what's happing in the control. From my understanding if you select all and change the paragraph style to have certain tabs then this will stay that way until:

1) The user changes the paragraph style by using one of the hotkeys that are supplied through RichEdit.

2) You change the paragraph style.

Here's an example. Let say you have an empty control and select all and set the tabs. Now you can type or add text(as long as it is just text and not formatted text) and the tabs should stay the same. The whole thing about the tabs only applying to the selection is that if you only selected half the text and changed the tabs then only that selection would change(not always if the start or end of the selection was in the middle of a paragraph).

The key is applying the changes to the end of paragraph marker. That last little part that can be selected but never deleted. You can check out ITextRange for a good explaination. But if that is changed then everything added to it will have that paragraph style(UNLESS IT'S FORMATTED TEXT).

Does that make sense? If not I'll try again.
-Ben

My first thought is what version of the Rich Edit are you using? I'm not sure it will work in v1.0. Take a look at this for changing versions.http://www.dev-archive.com/richedit/RichEdit20.shtml

What if you used PARAFORMAT2 instead of PARAFORMAT?

What about changing the paragraph style after some text has been entered? Maybe make a menu item that will select all and change the tabs and try it at different times and see what happens.

The last thought I have is what about setting the width of the view with CRichEditView::SetPaperSize though I don't think this will matter.

If I get some time I'll try a sample project and see if I can get it working. Good luck.

-Ben

Well yours definitly works.. I tried using your exact code, and no luck with mine.. I mean the lines were the same in OnInitialUpdate and PreCreateWindow()... so now im wondering if I am doing something else that interferes with that? I know I change the font and a few other things, but I tried commenting all my extra code out, and still no luck..

any ideas?

OK I got it to work off a menu button, but not in initial update... any ideas why not? I also got it to work with 1.0 on the menu button...

OnInitialUpdate() seems the ideal place to have it.. since I want to hide it form the user..

Thanks!
Curtis

Originally posted by bmacri
If all else fails then I say pray to the Rich Edit guru Simon666 and hope he provides an answer. If your reading this do you have any thoughts?

-Ben
Actually I have been reading this thread with great interest. I'm surprised you call me guru, I may have 2000+ posts but so does Xeon. :D I have tested your project once Ben and indeed it works. I used the code once in my project and found out it didn't work. I've already found out what lines of code caused it. The problem is in my case caused because I call

GetRichEditCtrl().Clear();

in my view's OnUpdate function. I use thatover there to clear the contents before placing the (new) text in the richedit control. Actually, calling GetRichEditCtrl().ReplaceSel("Whatever"); causes the same effect, no matter what you seem to put after it. Another thing I noticed is that the location of the Clear or ReplaceSel is not important either, if you put it anywhere in a function that gets executed after OnInitialUpdate the format of the tabs goes lost. Problem is I don't know yet how to solve it. :( :rolleyes: I'll look into this tomorrow.

Sorry, it was late yesterday. I checked it out the "solution" I posted yesterday in Ben's test program and there the code seemed to work. However, so did his original code, even when you placed GetRichEditCtrl().Clear() or ReplaceSel() after it. In my original program, that code still doesn't work when you do a Clear or ReplaceSel. Apparently all that was necessary to make it work was to use Ben's PreCreateWindow function too. Then it all worked fine. Could you explain perhaps Ben why this could make a difference? I have RichEd20.DLL on my system and I thought this was automatically loaded when you use a richeditview?

BOOL C***View::PreCreateWindow(CREATESTRUCT& cs)
{
cs.style |= WS_VSCROLL | WS_HSCROLL | ES_MULTILINE | ES_WANTRETURN | ES_NOHIDESEL;

BOOL ret = CRichEditView::PreCreateWindow(cs);

HMODULE hMod = LoadLibrary("RICHED20.DLL");
if(!hMod)
{
AfxMessageBox("Riched20.dll is missing or not correctly registered.", MB_OK | MB_ICONSTOP );
return FALSE;
}

cs.lpszClass = "RichEdit20A";
return ret;

}

void C***View::OnInitialUpdate()
{
CRichEditView::OnInitialUpdate();

PARAFORMAT pf;
pf.cbSize = sizeof(PARAFORMAT);
pf.dwMask = PFM_TABSTOPS;
pf.cTabCount = MAX_TAB_STOPS;
for(int i = 0; i < pf.cTabCount; i++)
pf.rgxTabs[i] = (i + 1) * 120;
SetParaFormat(pf);

// Just testing
GetRichEditCtrl().Clear();
}

Well im still hanging in there.. I use some Clear()'s and ReplaceSel()'s in my RichEditView class after my OnInitialUpdate() function.. so maybe this is my problem? Would it be an idea to try to create a method that calls the same code as we have in OnInitialUpdate() after every call to a Clear() or ReplaceSel()?

Thanks!

I have also tried this using richedit 2.0 and 1.0, neither seems to make a difference.

Thanks.

Originally posted by lab1
Any ideas?
Nope. Out of ideas. You could still attach a (sample) project containing the richedit view displaying that behaviour so we could take a look.