f0e458e25c
When font family of a private font is retrieved with call to Gdiplus::Font::GetFamily() then later on there is thrown access violation exception when array of cached private font families (filled in by Gdiplus::PrivateFontCollection::GetFamilies()) is deleted in wxGDIPlusRenderer::Unload(). Call to Font::GetFamily() is done in wxGDIPlusContext::GetTextExtent() so this issue can be seen once text extent is retrieved for a private font. Because it looks that calling to Font::GetFamily() for a private font is messing up something in the array of cached private font families so we should avoid calling this method and directly fetch corresponding font family from the cache instead. Reference to the cached font family would be stored in the wxGDIPlusDataFont and it could be fetched from there directly instead of making a call to Font::GetFamily(). Closes #18704.
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 and 10 (32/64 bits).
- Most Unix variants using the GTK+ toolkit (version 2.6 or newer or 3.x).
- OS X (10.7 or newer) using Cocoa (32/64 bits).
Most popular C++ compilers are supported including but not limited to:
- Microsoft Visual C++ 2003 or later (up to 2019).
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- Intel icc compiler.
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Licence
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For building the library, please see platform-specific documentation under
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The wxWidgets Team.