Vadim Zeitlin
2be5f429c1
Creating wxAppTraits before the object of the user-defined class deriving from wxApp is fully constructed may result in creating a wrong traits object if the user class overrides CreateTraits() because the correct, i.e. user-defined, version isn't used if it's called from wx code. This had already happened before and was worked around back inbc334f39ec(Fixes Bug [ 930200 ] Async does not work, 2004-04-27), but recently happened again after the changes of94e4818caa(Warn on startup when not using comctl32.dll v6 in wxMSW, 2022-11-28). To prevent it from happening in the future, add WXAppConstructed() that must be called after fully constructing wxApp (and forgetting to do it would result in an assert, so doesn't risk to go unnoticed) and which resets m_traits if it has been wrongly created. It would, perhaps, be even better if we avoided creating the wrong traits in the first place, but for now this at least fixes the latest problem and ensures it doesn't reoccur. Closes #23315.
About
wxWidgets is a free and open source cross-platform C++ framework for writing advanced GUI applications using native controls.
wxWidgets allows you to write native-looking GUI applications for all the major desktop platforms and also helps with abstracting the differences in the non-GUI aspects between them. It is free for the use in both open source and commercial applications, comes with the full, easy to read and modify, source and extensive documentation and a collection of more than a hundred examples. You can learn more about wxWidgets at https://www.wxwidgets.org/ and read its documentation online at https://docs.wxwidgets.org/
Platforms
This version of wxWidgets supports the following primary platforms:
- Windows 7, 8, 10 and 11 (32/64 bits).
- Most Unix variants using the GTK+ toolkit (version 2.6 or newer or 3.x).
- macOS (10.10 or newer) using Cocoa under both amd64 and ARM platforms.
All C++11 compilers are supported including but not limited to:
- Microsoft Visual C++ 2015 or later (up to 2022).
- g++ 4.8 or later (up to 12), including MinGW/MinGW-64/TDM under Windows.
- Clang (up to 14).
Please use 3.2 branch if you must use wxWidgets with a C++98 compiler or support Windows XP.
Licence
wxWidgets licence is a modified version of LGPL explicitly allowing not distributing the sources of an application using the library even in the case of static linking.
Building
For building the library, please see platform-specific documentation under
docs/<port> directory, e.g. here are the instructions for
wxGTK, wxMSW and
wxOSX.
If you're building the sources checked out from Git, and not from a released version, please see these additional Git-specific notes.
Further information
If you are looking for community support, you can get it from
- Mailing Lists
- Discussion Forums
- #wxwidgets IRC channel
- Stack Overflow
(tag your questions with
wxwidgets) - And you can report bugs at GitHub
Commercial support is also available.
Finally, keep in mind that wxWidgets is an open source project collaboratively developed by its users and your contributions to it are always welcome. Please check our guidelines if you'd like to do it.
Have fun!
The wxWidgets Team.