IMPORTANT:

Memo.TextAttr provides either a reference to CurrAttr or to CurrSelAttr, depending on the state of TextCursor.IsSelected. Please note, that an initialization before the selection process will cause the wrong interface to be provided.

This will code not modify the attribute of "some text":

IWPMemo Memo = wpdllInt1.Memo;

IWPTextCursor TextCursor = Memo.TextCursor;

IWPAttrInterface Attr = Memo.TextAttr;

bool ok = false;

int cp = TextCursor.MarkerDrop(0);

// Use FindText.- If "MoveCursor=false", the text will be selected

TextCursor.FindText("some text", true, false, false, false, ref ok);

if (ok)

{

    Attr.Clear();

    Attr.SetFontface("Arial");

}

TextCursor.MarkerGoto(true, cp);

Instead, it has to be done like this:

IWPMemo Memo = wpdllInt1.Memo;

IWPTextCursor TextCursor = Memo.TextCursor;

bool ok = false;

int cp = TextCursor.MarkerDrop(0);

// Use FindText.- If "MoveCursor=false", the text will be selected

TextCursor.FindText("some text", true, false, false, false, ref ok);

if (ok)

{

    IWPAttrInterface Attr = Memo.TextAttr;

    Attr.Clear();

    Attr.SetFontface("Arial");

}

TextCursor.MarkerGoto(true, cp);

Or You use CurrSelAttr instead

IWPAttrInterface Attr = Memo.CurrSelAttr;