TRichView.com

Yep, I need to add "AddUndo" to the Undo method. Thank you, Sergey)

Yes, implementation of the TRVUndoModifyMathObject.Undo is here: procedure TRVUndoModifyMathObject.Undo(RVData: TRichViewRVData); var ItemInfo: TRVMathObjectItemInfo; begin if FItemNo > -1 then begin ItemInfo := TRVMathObjectItemInfo(RVData.GetItem(FItemNo)); if Assigned(ItemInfo) then begin ItemInf...

Hi, I have read other forum threads regarding "Custom Undo" operations, but I did not find an answer. Based on this topic , I implemented a custom Undo class, and it works fine: class procedure TRVUndoModifyMathObject.AddUndo(RVData: TRichViewRVData; ItemInfo: TRVMathObjectItemInfo); var E...

Thank you Sergey, by email would be great.

I have a problem with setting the TRVMathItemInfo.TextColor property. When the formula is created (a new one is added), this property works fine. But when the formula already exists and I try to change the TextColor, nothing happens. The same problem occurs with the visual formula editor TfrmRVMathE...

I commented the code and tested AME's solution. The fonts "STIXTwoMath-Regular.otf" and "STIXTwoMath-Regular.ttf" failed anyway (now the AV appears in a different place). It seems to me that the engine does not work properly with some characters, because the font "STIXTwoMat...

I experimented a bit and this is what I found. The STIX font set includes several math fonts: - STIXTwoMath-Regular.otf (from the "fonts > static_otf" subfolder, 819 KB) - STIXTwoMath-Regular.ttf (from the "fonts > static_ttf" subfolder, 1483 KB) Both of these fonts result in an ...

Sergey Tkachenko wrote: ↑Sat Jan 28, 2023 8:02 pm Do you have some custom memory manager installed in Delphi?

I don't use custom memory managers, but If we need a more detailed analysis, I am ready.

Yes, I am attaching the ZIP. The archive contains a test application and screenshots.
I use the latest version of RV.
And here I recorded the sequence of my actions on video:
https://dystlab.store/download/gftruiw/ ... 120859.wmv

Hi, I have a problem with the "STIXTwoMath-Regular" math font. It is a very common and functional font. But when I try to use it (just select from ComboBox in the Equation Editor), I get AV. I can't attach the font to this post, it's 819 kB. But you can download it freely here: https://git...

Ok, thanks for the clarification!

OK, I have already sent a letter with an example. It seems that this bug appears only if there is a table in the Header. I'm assuming that the table has a dynamic editor and catches the appropriate events, and that's where RVData=nil can be. To reproduce issue: 1. Set event handler for SRichViewEdit...

Hi, I am getting Access Violation when I press CTRL+A on the header (TSRichViewEdit). Debugger shows that the property RVData=nil in the methods TCustomRichViewEdit.KeyDown and TCustomRichView.KeyDown. I set a temporary check at the beginning of the method: if RVData = nil then Exit; But perhaps a b...

Thank you very much! It solves everything.

Sergey, I reproduced the issue in the small application (see attached file). 1. Insert equation using "Equation" button --> OK 2. Double click equation to open editor --> OK 3. Edit equation (make some changes), close editor --> NOT OK Theoretically, in step 3 (after closing the editor) we...