wxWidgets Discussion Forum

I wanted to draw current FPS and I noticed that "gc->SetFont(GetFont(), *wxWHITE);" adds another 20 ms :shock: i never rendered graphics with wxWidgets... but function virtual void wxGraphicsContext::SetFont(const wxGraphicsFont &font); looks closer to hardware, so must be more fast, you just have ...

I'v made a bottom docked pane for diagnostic messages to a user. And I want it showed up for 1 sec. and then minimized it's height. But I cant change its size what ever I tried. Thank you if i remember, for wxAuiManager, to hide/show docked pane, you just need to call(surprise!) pane.Show(), pane.H...

read about wxFont and search around <wxFONTFAMILY_TELETYPE>

Thank you for your response. Unfortunately, I have seen that documentation link before and still don't understand it well. If you answer my following questions you will facilitate me to understand some things that I don't understand. After I call wxThread::Delete from outside a runtime error occurr...

if you want just test how the thread works, do your diagnostics via printf(...), or std::cout<<"text".
as doubleMax said you cannot use visual objects of wxWidgets from secondary threads, you can only send messsges of wxThreadMessage class to main frame(or any window of wxWidgets).

the easiest way here -
console app writes to std::cout.
see wxProcess class and wxExecute functions, and how to read output of a secondary app started from wxWIdgets app.
so - you develop wxWIdgets app, which starts your "bison app", reads its console output and analyses it as needed.

Anjum, 10-01-2020 With wxExecute we can execute the console application and capture the stdout data. But I would like to access those created arrays directly from a wxWidgets application. How can I do this ? if you already have captured stdout to (for example) wxArrayString... why there is a proble...

1.preprocessor
2. void interfaces implementaions.
if you have interfaces and their implementations, then you could define void implementations(which do nothing) and use them in restricted version.

про rand ерунда какая-то. в базовой реализации он опасный, и его мьютексом надо защищать. другое дело что без мьютекса там ничего не упадет, просто будут взаимовлияние на генерируемую последовательность от тредов. по хорошему надо инициализировать генератор через srand случайным числом в самом начал...

да они там все падать будут, кроме совсем невинных. там большинство можно только из главного треда вызывать. да и не надо на вторичных тредах делать серьезную функциональность. их роль вспомогательна - помочь головному треду в его задачах. нет списка безопасных. считай что опасные все, если явно не ...

короче из тела треда ты можешь использовать любую тредсэйв функцию как родную. но функция должна быть таковой обьявлена в доках или комментах к ней. функция что не обращается к глобальным обьектам, или внешним устройствам напрямую, то есть к ресурсам - тредсейф. например сложить два числа и вернуть ...

the main problem here is that thread-safety of wsString is not explicitly stated, and could depend on implementation, OS, compiler, etc. So stable code must assume the worst scenario and so, use cloning... this "may be...may be not" just confuses, imho. ps. i do not remember how i had built wxWIdget...

Sorry, I do not understand the question. What I wrote in my previous post was that unless you are using a non-default wxWidgets build or an old compiler, the wxString is not reference-counted, i.e., it does not use copy-on-write. from docs - wxString wxString::Clone ()const Returns a deep copy of t...

giving wxString by value to a thread doesnot help you, because two wxString instances will refer to the same buffer with string data. every string you gave to a thread must be cloned by string.Clone(); The default wxString implementation uses std::(w)string which AFAIK does not use reference-counti...

Спасибо, братан. Получается если я из потока вызываю какую либо глобальную функцию, то я также должен делать копию строки? bool sum_global_dll_func(wxString& sz) { ... } wxMyThread::func() { wxString sz; sum_global_dll_func(sz.clone()); } Очень интересно, щас попробую. thx hey, it's wrong. i said a...