6feeed9fe9
Don't take the value of "mask" parameter of wxImageList constructor too prescriptively, it predates support for alpha in wxWidgets by many years and was never meant to actually suppress using it. Instead, do the best thing we can in all cases, i.e. use alpha if it's specified and supported and use mask otherwise. But only create the mask from light grey colour if we have nothing else if "mask" is true in wxImageList constructor, as this is a potentially destructive action that must not be performed if the user has explicitly decided to set this parameter to false. Incidentally fix handling of alpha with comctl32.dll v5 (which is used in the absence of any manifest) by converting it to a mask in this case: this is not ideal, but better than just using black background as it happened before, and restores pre-3.1.5 behaviour. Also simplify the generic version which just has to create the default mask if necessary and doesn't have to do anything at all in all the other cases. Note that these changes required relaxing some of the existing unit tests as wxMSW implementation now can add alpha channel to the bitmaps that didn't have it -- but this is a more useful behaviour, and so it makes more sense to adapt the tests to it rather than doing a less useful thing just to conform to the tests. This commit is best viewed with git --color-moved --color-moved-ws=ignore-all-spac options. Closes #22349. |
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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 XP, Vista, 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.
Most popular C++ compilers are supported including but not limited to:
- Microsoft Visual C++ 2005 or later (up to 2022).
- g++ 4 or later (up to 12), including MinGW/MinGW-64/TDM under Windows.
- Clang (up to 14).
- Intel icc compiler.
- Oracle (ex-Sun) CC.
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.