85a3bf40fb
The window content scale correction at creation overwrote the inital,
more pleasant placement of the window by CW_USEDEFAULT, if the window
was created with GLFW_MAXIMIZED set. This is because the translation
to screen coordinates was done using the current position, not the
position from the restored window rect.
(cherry picked from commit 367d06deaf)
169 lines
7.3 KiB
Markdown
169 lines
7.3 KiB
Markdown
# GLFW
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[](https://github.com/glfw/glfw/actions)
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[](https://ci.appveyor.com/project/elmindreda/glfw)
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[](https://scan.coverity.com/projects/glfw-glfw)
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## Introduction
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GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan
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application development. It provides a simple, platform-independent API for
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creating windows, contexts and surfaces, reading input, handling events, etc.
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GLFW natively supports Windows, macOS and Linux and other Unix-like systems. On
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Linux both X11 and Wayland are supported.
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GLFW is licensed under the [zlib/libpng
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license](https://www.glfw.org/license.html).
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You can [download](https://www.glfw.org/download.html) the latest stable release
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as source or Windows binaries, or fetch the `latest` branch from GitHub. Each
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release starting with 3.0 also has a corresponding [annotated
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tag](https://github.com/glfw/glfw/releases) with source and binary archives.
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The [documentation](https://www.glfw.org/docs/latest/) is available online and is
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included in all source and binary archives. See the [release
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notes](https://www.glfw.org/docs/latest/news.html) for new features, caveats and
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deprecations in the latest release. For more details see the [version
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history](https://www.glfw.org/changelog.html).
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The `master` branch is the stable integration branch and _should_ always compile
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and run on all supported platforms, although details of newly added features may
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change until they have been included in a release. New features and many bug
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fixes live in [other branches](https://github.com/glfw/glfw/branches/all) until
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they are stable enough to merge.
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If you are new to GLFW, you may find the
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[tutorial](https://www.glfw.org/docs/latest/quick.html) for GLFW 3 useful. If
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you have used GLFW 2 in the past, there is a [transition
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guide](https://www.glfw.org/docs/latest/moving.html) for moving to the GLFW
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3 API.
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GLFW exists because of the contributions of [many people](CONTRIBUTORS.md)
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around the world, whether by reporting bugs, providing community support, adding
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features, reviewing or testing code, debugging, proofreading docs, suggesting
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features or fixing bugs.
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## Compiling GLFW
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GLFW itself requires only the headers and libraries for your OS and window
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system. It does not need the headers for any context creation API (WGL, GLX,
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EGL, NSGL, OSMesa) or rendering API (OpenGL, OpenGL ES, Vulkan) to enable
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support for them.
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GLFW supports compilation on Windows with Visual C++ 2010 and later, MinGW and
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MinGW-w64, on macOS with Clang and on Linux and other Unix-like systems with GCC
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and Clang. It will likely compile in other environments as well, but this is
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not regularly tested.
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There are [pre-compiled Windows binaries](https://www.glfw.org/download.html)
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available for all supported compilers.
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See the [compilation guide](https://www.glfw.org/docs/latest/compile.html) for
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more information about how to compile GLFW yourself.
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## Using GLFW
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See the [documentation](https://www.glfw.org/docs/latest/) for tutorials, guides
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and the API reference.
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## Contributing to GLFW
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See the [contribution
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guide](https://github.com/glfw/glfw/blob/master/docs/CONTRIBUTING.md) for
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more information.
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## System requirements
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GLFW supports Windows XP and later and macOS 10.8 and later. Linux and other
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Unix-like systems running the X Window System are supported even without
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a desktop environment or modern extensions, although some features require
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a running window or clipboard manager. The OSMesa backend requires Mesa 6.3.
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See the [compatibility guide](https://www.glfw.org/docs/latest/compat.html)
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in the documentation for more information.
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## Dependencies
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GLFW itself depends only on the headers and libraries for your window system.
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The (experimental) Wayland backend also depends on the `extra-cmake-modules`
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package, which is used to generate Wayland protocol headers.
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The examples and test programs depend on a number of tiny libraries. These are
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located in the `deps/` directory.
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- [getopt\_port](https://github.com/kimgr/getopt_port/) for examples
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with command-line options
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- [TinyCThread](https://github.com/tinycthread/tinycthread) for threaded
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examples
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- [glad2](https://github.com/Dav1dde/glad) for loading OpenGL and Vulkan
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functions
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- [linmath.h](https://github.com/datenwolf/linmath.h) for linear algebra in
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examples
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- [Nuklear](https://github.com/Immediate-Mode-UI/Nuklear) for test and example UI
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- [stb\_image\_write](https://github.com/nothings/stb) for writing images to disk
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The documentation is generated with [Doxygen](https://doxygen.org/) if CMake can
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find that tool.
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## Reporting bugs
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Bugs are reported to our [issue tracker](https://github.com/glfw/glfw/issues).
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Please check the [contribution
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guide](https://github.com/glfw/glfw/blob/master/docs/CONTRIBUTING.md) for
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information on what to include when reporting a bug.
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## Changelog
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- [Win32] Bugfix: A window created maximized and undecorated would cover the whole
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monitor (#1806)
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- [Win32] Bugfix: The default restored window position was lost when creating a maximized
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window
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- [Cocoa] Bugfix: `kUTTypeURL` was deprecated in macOS 12.0 (#2003)
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- [X11] Bugfix: Dynamic loading on OpenBSD failed due to soname differences
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- [X11] Bugfix: Waiting for events would fail if file descriptor was too large
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(#2024)
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- [X11] Bugfix: Joystick events could lead to busy-waiting (#1872)
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- [X11] Bugfix: `glfwWaitEvents*` did not continue for joystick events
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- [X11] Bugfix: `glfwPostEmptyEvent` could be ignored due to race condition
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(#379,#1281,#1285,#2033)
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- [X11] Bugfix: Dynamic loading on NetBSD failed due to soname differences
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- [Wayland] Added support for key names via xkbcommon
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- [Wayland] Bugfix: Key repeat could lead to a race condition (#1710)
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- [Wayland] Bugfix: Activating a window would emit two input focus events
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- [Wayland] Bugfix: Disable key repeat mechanism when window loses input focus
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- [Wayland] Bugfix: Window hiding and showing did not work (#1492,#1731)
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- [Wayland] Bugfix: A key being repeated was not released when window lost focus
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- [Wayland] Bugfix: Showing a hidden window did not emit a window refresh event
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- [Wayland] Bugfix: Full screen window creation did not ignore `GLFW_VISIBLE`
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- [Wayland] Bugfix: Some keys were reported as wrong key or `GLFW_KEY_UNKNOWN`
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- [Wayland] Bugfix: Text input did not repeat along with key repeat
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- [Wayland] Bugfix: `glfwPostEmptyEvent` sometimes had no effect (#1520,#1521)
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- [GLX] Bugfix: Context creation failed if GLX 1.4 was not exported by GLX library
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## Contact
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On [glfw.org](https://www.glfw.org/) you can find the latest version of GLFW, as
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well as news, documentation and other information about the project.
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If you have questions related to the use of GLFW, we have a
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[forum](https://discourse.glfw.org/), and the `#glfw` IRC channel on
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[Libera.Chat](https://libera.chat/).
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If you have a bug to report, a patch to submit or a feature you'd like to
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request, please file it in the
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[issue tracker](https://github.com/glfw/glfw/issues) on GitHub.
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Finally, if you're interested in helping out with the development of GLFW or
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porting it to your favorite platform, join us on the forum, GitHub or IRC.
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