Merge branch '3.3-stable' into new-cursors-on-3.3-stable

.github/workflows/build.yml

@@ -96,8 +96,8 @@ jobs:
             - name: Build shared library
               run: cmake --build build-shared --parallel
 
-    build-windows-win32-vs2019:
+    build-windows-win32-vs2022:
-        name: Win32 (Windows, VS2019)
+        name: Win32 (Windows, VS2022)
         runs-on: windows-latest
         env:
             CFLAGS: /WX
@@ -105,12 +105,12 @@ jobs:
             - uses: actions/checkout@v2
 
             - name: Configure static library
-              run: cmake -S . -B build-static -G "Visual Studio 16 2019"
+              run: cmake -S . -B build-static -G "Visual Studio 17 2022"
             - name: Build static library
               run: cmake --build build-static --parallel
 
             - name: Configure shared library
-              run: cmake -S . -B build-shared -G "Visual Studio 16 2019" -D BUILD_SHARED_LIBS=ON
+              run: cmake -S . -B build-shared -G "Visual Studio 17 2022" -D BUILD_SHARED_LIBS=ON
             - name: Build shared library
               run: cmake --build build-shared --parallel
 

CONTRIBUTORS.md

@@ -29,6 +29,7 @@ video tutorials.
  - David Carlier
  - Arturo Castro
  - Chi-kwan Chan
+ - TheChocolateOre
  - Joseph Chua
  - Ian Clarkson
  - Michał Cichoń
@@ -81,6 +82,7 @@ video tutorials.
  - Paul Holden
  - Warren Hu
  - Charles Huber
+ - illustris
  - InKryption
  - IntellectualKitty
  - Aaron Jacobs
@@ -179,12 +181,15 @@ video tutorials.
  - Ali Sherief
  - Yoshiki Shibukawa
  - Dmitri Shuralyov
+ - Joao da Silva
  - Daniel Sieger
  - Daniel Skorupski
+ - Slemmie
  - Bradley Smith
  - Cliff Smolinsky
  - Patrick Snape
  - Erlend Sogge Heggen
+ - Olivier Sohn
  - Julian Squires
  - Johannes Stein
  - Pontus Stenetorp

README.md

@@ -123,8 +123,21 @@ information on what to include when reporting a bug.
 
 ## Changelog
 
+ - [Win32] Bugfix: A window created maximized and undecorated would cover the whole
+   monitor (#1806)
+ - [Win32] Bugfix: The default restored window position was lost when creating a maximized
+   window
+ - [Win32] Bugfix: `glfwMaximizeWindow` would make a hidden window visible
  - [Cocoa] Bugfix: `kUTTypeURL` was deprecated in macOS 12.0 (#2003)
  - [X11] Bugfix: Dynamic loading on OpenBSD failed due to soname differences
+ - [X11] Bugfix: Waiting for events would fail if file descriptor was too large
+   (#2024)
+ - [X11] Bugfix: Joystick events could lead to busy-waiting (#1872)
+ - [X11] Bugfix: `glfwWaitEvents*` did not continue for joystick events
+ - [X11] Bugfix: `glfwPostEmptyEvent` could be ignored due to race condition
+   (#379,#1281,#1285,#2033)
+ - [X11] Bugfix: Dynamic loading on NetBSD failed due to soname differences
+ - [X11] Bugfix: Left shift of int constant relied on undefined behavior (#1951)
  - [Wayland] Added support for key names via xkbcommon
  - [Wayland] Bugfix: Key repeat could lead to a race condition (#1710)
  - [Wayland] Bugfix: Activating a window would emit two input focus events
@@ -135,6 +148,8 @@ information on what to include when reporting a bug.
  - [Wayland] Bugfix: Full screen window creation did not ignore `GLFW_VISIBLE`
  - [Wayland] Bugfix: Some keys were reported as wrong key or `GLFW_KEY_UNKNOWN`
  - [Wayland] Bugfix: Text input did not repeat along with key repeat
+ - [Wayland] Bugfix: `glfwPostEmptyEvent` sometimes had no effect (#1520,#1521)
+ - [GLX] Bugfix: Context creation failed if GLX 1.4 was not exported by GLX library
 
 
 ## Contact

docs/compile.dox

@@ -68,8 +68,10 @@ install the `xorgproto` package.
 pkg install xorgproto
 @endcode
 
-On Cygwin the `xorgproto` package in the Devel section of the GUI installer will
+On Cygwin the `libXcursor-devel`, `libXi-devel`, `libXinerama-devel`,
-install the headers and other development related files for all of X11.
+`libXrandr-devel` and `libXrender-devel` packages in the Libs section of the GUI
+installer will install all the headers and other development related files GLFW
+requires for X11.
 
 Once you have the required depdendencies, move on to @ref compile_generate.
 

docs/input.dox

@@ -821,7 +821,7 @@ The second value is always the human-readable name of the gamepad.
 All subsequent values are in the form `<field>:<value>` and describe the layout
 of the mapping.  These fields may not all be present and may occur in any order.
 
-The button fields are `a`, `b`, `c`, `d`, `back`, `start`, `guide`, `dpup`,
+The button fields are `a`, `b`, `x`, `y`, `back`, `start`, `guide`, `dpup`,
 `dpright`, `dpdown`, `dpleft`, `leftshoulder`, `rightshoulder`, `leftstick` and
 `rightstick`.
 

docs/news.dox

@@ -306,6 +306,12 @@ GLFW_TRANSPARENT_FRAMEBUFFER on Windows 7 if DWM transparency is off
 (the Transparency setting under Personalization > Window Color).
 
 
+@subsubsection emptyevents_33 Empty events on X11 no longer roundtrip to server
+
+Starting with GLFW 3.3.7, events posted with @ref glfwPostEmptyEvent now use a separate
+unnamed pipe instead of sending an X11 client event to the helper window.
+
+
 @subsection deprecations_33 Deprecations in version 3.3
 
 @subsubsection charmods_callback_33 Character with modifiers callback

src/egl_context.c

@@ -320,7 +320,7 @@ GLFWbool _glfwInitEGL(void)
         "libEGL.dylib",
 #elif defined(__CYGWIN__)
         "libEGL-1.so",
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
         "libEGL.so",
 #else
         "libEGL.so.1",
@@ -643,7 +643,7 @@ GLFWbool _glfwCreateContextEGL(_GLFWwindow* window,
             "libGLES_CM.dll",
 #elif defined(_GLFW_COCOA)
             "libGLESv1_CM.dylib",
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
             "libGLESv1_CM.so",
 #else
             "libGLESv1_CM.so.1",
@@ -662,7 +662,7 @@ GLFWbool _glfwCreateContextEGL(_GLFWwindow* window,
             "libGLESv2.dylib",
 #elif defined(__CYGWIN__)
             "libGLESv2-2.so",
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
             "libGLESv2.so",
 #else
             "libGLESv2.so.2",
@@ -675,7 +675,7 @@ GLFWbool _glfwCreateContextEGL(_GLFWwindow* window,
             _GLFW_OPENGL_LIBRARY,
 #elif defined(_GLFW_WIN32)
 #elif defined(_GLFW_COCOA)
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
             "libGL.so",
 #else
             "libGL.so.1",

src/glx_context.c

@@ -260,7 +260,7 @@ GLFWbool _glfwInitGLX(void)
         _GLFW_GLX_LIBRARY,
 #elif defined(__CYGWIN__)
         "libGL-1.so",
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
         "libGL.so",
 #else
         "libGL.so.1",
@@ -309,10 +309,6 @@ GLFWbool _glfwInitGLX(void)
         _glfw_dlsym(_glfw.glx.handle, "glXCreateWindow");
     _glfw.glx.DestroyWindow =
         _glfw_dlsym(_glfw.glx.handle, "glXDestroyWindow");
-    _glfw.glx.GetProcAddress =
-        _glfw_dlsym(_glfw.glx.handle, "glXGetProcAddress");
-    _glfw.glx.GetProcAddressARB =
-        _glfw_dlsym(_glfw.glx.handle, "glXGetProcAddressARB");
     _glfw.glx.GetVisualFromFBConfig =
         _glfw_dlsym(_glfw.glx.handle, "glXGetVisualFromFBConfig");
 
@@ -328,8 +324,6 @@ GLFWbool _glfwInitGLX(void)
         !_glfw.glx.CreateNewContext ||
         !_glfw.glx.CreateWindow ||
         !_glfw.glx.DestroyWindow ||
-        !_glfw.glx.GetProcAddress ||
-        !_glfw.glx.GetProcAddressARB ||
         !_glfw.glx.GetVisualFromFBConfig)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
@@ -337,6 +331,12 @@ GLFWbool _glfwInitGLX(void)
         return GLFW_FALSE;
     }
 
+    // NOTE: Unlike GLX 1.3 entry points these are not required to be present
+    _glfw.glx.GetProcAddress = (PFNGLXGETPROCADDRESSPROC)
+        _glfw_dlsym(_glfw.glx.handle, "glXGetProcAddress");
+    _glfw.glx.GetProcAddressARB = (PFNGLXGETPROCADDRESSPROC)
+        _glfw_dlsym(_glfw.glx.handle, "glXGetProcAddressARB");
+
     if (!glXQueryExtension(_glfw.x11.display,
                            &_glfw.glx.errorBase,
                            &_glfw.glx.eventBase))

src/osmesa_context.c

@@ -124,7 +124,7 @@ GLFWbool _glfwInitOSMesa(void)
         "libOSMesa.8.dylib",
 #elif defined(__CYGWIN__)
         "libOSMesa-8.so",
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
         "libOSMesa.so",
 #else
         "libOSMesa.so.8",

src/vulkan.c

@@ -59,7 +59,7 @@ GLFWbool _glfwInitVulkan(int mode)
     _glfw.vk.handle = _glfw_dlopen("libvulkan.1.dylib");
     if (!_glfw.vk.handle)
         _glfw.vk.handle = _glfwLoadLocalVulkanLoaderNS();
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
     _glfw.vk.handle = _glfw_dlopen("libvulkan.so");
 #else
     _glfw.vk.handle = _glfw_dlopen("libvulkan.so.1");

src/win32_init.c

@@ -92,6 +92,8 @@ static GLFWbool loadLibraries(void)
         GetProcAddress(_glfw.win32.user32.instance, "GetDpiForWindow");
     _glfw.win32.user32.AdjustWindowRectExForDpi_ = (PFN_AdjustWindowRectExForDpi)
         GetProcAddress(_glfw.win32.user32.instance, "AdjustWindowRectExForDpi");
+    _glfw.win32.user32.GetSystemMetricsForDpi_ = (PFN_GetSystemMetricsForDpi)
+        GetProcAddress(_glfw.win32.user32.instance, "GetSystemMetricsForDpi");
 
     _glfw.win32.dinput8.instance = LoadLibraryA("dinput8.dll");
     if (_glfw.win32.dinput8.instance)
@@ -484,7 +486,7 @@ void _glfwUpdateKeyNamesWin32(void)
             vk = vks[key - GLFW_KEY_KP_0];
         }
         else
-            vk = MapVirtualKey(scancode, MAPVK_VSC_TO_VK);
+            vk = MapVirtualKeyW(scancode, MAPVK_VSC_TO_VK);
 
         length = ToUnicode(vk, scancode, state,
                            chars, sizeof(chars) / sizeof(WCHAR),
@@ -507,7 +509,8 @@ void _glfwUpdateKeyNamesWin32(void)
     }
 }
 
-// Replacement for IsWindowsVersionOrGreater as MinGW lacks versionhelpers.h
+// Replacement for IsWindowsVersionOrGreater, as we cannot rely on the
+// application having a correct embedded manifest
 //
 BOOL _glfwIsWindowsVersionOrGreaterWin32(WORD major, WORD minor, WORD sp)
 {

src/win32_joystick.c

@@ -497,7 +497,7 @@ void _glfwInitJoysticksWin32(void)
 {
     if (_glfw.win32.dinput8.instance)
     {
-        if (FAILED(DirectInput8Create(GetModuleHandle(NULL),
+        if (FAILED(DirectInput8Create(GetModuleHandleW(NULL),
                                       DIRECTINPUT_VERSION,
                                       &IID_IDirectInput8W,
                                       (void**) &_glfw.win32.dinput8.api,

src/win32_monitor.c

@@ -382,7 +382,7 @@ void _glfwPlatformGetMonitorWorkarea(_GLFWmonitor* monitor,
                                      int* width, int* height)
 {
     MONITORINFO mi = { sizeof(mi) };
-    GetMonitorInfo(monitor->win32.handle, &mi);
+    GetMonitorInfoW(monitor->win32.handle, &mi);
 
     if (xpos)
         *xpos = mi.rcWork.left;

src/win32_platform.h

@@ -162,7 +162,9 @@ typedef enum
 #define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 ((HANDLE) -4)
 #endif /*DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2*/
 
-// HACK: Define versionhelpers.h functions manually as MinGW lacks the header
+// Replacement for versionhelpers.h macros, as we cannot rely on the
+// application having a correct embedded manifest
+//
 #define IsWindowsXPOrGreater()                                 \
     _glfwIsWindowsVersionOrGreaterWin32(HIBYTE(_WIN32_WINNT_WINXP),   \
                                         LOBYTE(_WIN32_WINNT_WINXP), 0)
@@ -235,12 +237,14 @@ typedef BOOL (WINAPI * PFN_EnableNonClientDpiScaling)(HWND);
 typedef BOOL (WINAPI * PFN_SetProcessDpiAwarenessContext)(HANDLE);
 typedef UINT (WINAPI * PFN_GetDpiForWindow)(HWND);
 typedef BOOL (WINAPI * PFN_AdjustWindowRectExForDpi)(LPRECT,DWORD,BOOL,DWORD,UINT);
+typedef int (WINAPI * PFN_GetSystemMetricsForDpi)(int,UINT);
 #define SetProcessDPIAware _glfw.win32.user32.SetProcessDPIAware_
 #define ChangeWindowMessageFilterEx _glfw.win32.user32.ChangeWindowMessageFilterEx_
 #define EnableNonClientDpiScaling _glfw.win32.user32.EnableNonClientDpiScaling_
 #define SetProcessDpiAwarenessContext _glfw.win32.user32.SetProcessDpiAwarenessContext_
 #define GetDpiForWindow _glfw.win32.user32.GetDpiForWindow_
 #define AdjustWindowRectExForDpi _glfw.win32.user32.AdjustWindowRectExForDpi_
+#define GetSystemMetricsForDpi _glfw.win32.user32.GetSystemMetricsForDpi_
 
 // dwmapi.dll function pointer typedefs
 typedef HRESULT (WINAPI * PFN_DwmIsCompositionEnabled)(BOOL*);
@@ -366,6 +370,7 @@ typedef struct _GLFWlibraryWin32
         PFN_SetProcessDpiAwarenessContext SetProcessDpiAwarenessContext_;
         PFN_GetDpiForWindow             GetDpiForWindow_;
         PFN_AdjustWindowRectExForDpi    AdjustWindowRectExForDpi_;
+        PFN_GetSystemMetricsForDpi      GetSystemMetricsForDpi_;
     } user32;
 
     struct {

src/win32_window.c

@@ -435,7 +435,7 @@ static int getKeyMods(void)
 static void fitToMonitor(_GLFWwindow* window)
 {
     MONITORINFO mi = { sizeof(mi) };
-    GetMonitorInfo(window->monitor->win32.handle, &mi);
+    GetMonitorInfoW(window->monitor->win32.handle, &mi);
     SetWindowPos(window->win32.handle, HWND_TOPMOST,
                  mi.rcMonitor.left,
                  mi.rcMonitor.top,
@@ -456,8 +456,8 @@ static void acquireMonitor(_GLFWwindow* window)
         //       the OpenGL ICD switches to page flipping
         if (IsWindowsXPOrGreater())
         {
-            SystemParametersInfo(SPI_GETMOUSETRAILS, 0, &_glfw.win32.mouseTrailSize, 0);
+            SystemParametersInfoW(SPI_GETMOUSETRAILS, 0, &_glfw.win32.mouseTrailSize, 0);
-            SystemParametersInfo(SPI_SETMOUSETRAILS, 0, 0, 0);
+            SystemParametersInfoW(SPI_SETMOUSETRAILS, 0, 0, 0);
         }
     }
 
@@ -482,13 +482,66 @@ static void releaseMonitor(_GLFWwindow* window)
 
         // HACK: Restore mouse trail length saved in acquireMonitor
         if (IsWindowsXPOrGreater())
-            SystemParametersInfo(SPI_SETMOUSETRAILS, _glfw.win32.mouseTrailSize, 0, 0);
+            SystemParametersInfoW(SPI_SETMOUSETRAILS, _glfw.win32.mouseTrailSize, 0, 0);
     }
 
     _glfwInputMonitorWindow(window->monitor, NULL);
     _glfwRestoreVideoModeWin32(window->monitor);
 }
 
+// Manually maximize the window, for when SW_MAXIMIZE cannot be used
+//
+static void maximizeWindowManually(_GLFWwindow* window)
+{
+    RECT rect;
+    DWORD style;
+    MONITORINFO mi = { sizeof(mi) };
+
+    GetMonitorInfoW(MonitorFromWindow(window->win32.handle,
+                                      MONITOR_DEFAULTTONEAREST), &mi);
+
+    rect = mi.rcWork;
+
+    if (window->maxwidth != GLFW_DONT_CARE && window->maxheight != GLFW_DONT_CARE)
+    {
+        if (rect.right - rect.left > window->maxwidth)
+            rect.right = rect.left + window->maxwidth;
+        if (rect.bottom - rect.top > window->maxheight)
+            rect.bottom = rect.top + window->maxheight;
+    }
+
+    style = GetWindowLongW(window->win32.handle, GWL_STYLE);
+    style |= WS_MAXIMIZE;
+    SetWindowLongW(window->win32.handle, GWL_STYLE, style);
+
+    if (window->decorated)
+    {
+        const DWORD exStyle = GetWindowLongW(window->win32.handle, GWL_EXSTYLE);
+
+        if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
+        {
+            const UINT dpi = GetDpiForWindow(window->win32.handle);
+            AdjustWindowRectExForDpi(&rect, style, FALSE, exStyle, dpi);
+            OffsetRect(&rect, 0, GetSystemMetricsForDpi(SM_CYCAPTION, dpi));
+        }
+        else
+        {
+            AdjustWindowRectEx(&rect, style, FALSE, exStyle);
+            OffsetRect(&rect, 0, GetSystemMetrics(SM_CYCAPTION));
+        }
+
+        if (rect.bottom > mi.rcWork.bottom)
+            rect.bottom = mi.rcWork.bottom;
+    }
+
+    SetWindowPos(window->win32.handle, HWND_TOP,
+                 rect.left,
+                 rect.top,
+                 rect.right - rect.left,
+                 rect.bottom - rect.top,
+                 SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED);
+}
+
 // Window callback function (handles window messages)
 //
 static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
@@ -1067,7 +1120,7 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
 
                 ZeroMemory(&mi, sizeof(mi));
                 mi.cbSize = sizeof(mi);
-                GetMonitorInfo(mh, &mi);
+                GetMonitorInfoW(mh, &mi);
 
                 mmi->ptMaxPosition.x = mi.rcWork.left - mi.rcMonitor.left;
                 mmi->ptMaxPosition.y = mi.rcWork.top - mi.rcMonitor.top;
@@ -1285,18 +1338,22 @@ static int createNativeWindow(_GLFWwindow* window,
 
     window->win32.scaleToMonitor = wndconfig->scaleToMonitor;
 
-    // Adjust window rect to account for DPI scaling of the window frame and
-    // (if enabled) DPI scaling of the content area
-    // This cannot be done until we know what monitor the window was placed on
     if (!window->monitor)
     {
         RECT rect = { 0, 0, wndconfig->width, wndconfig->height };
         WINDOWPLACEMENT wp = { sizeof(wp) };
+        const HMONITOR mh = MonitorFromWindow(window->win32.handle,
+                                              MONITOR_DEFAULTTONEAREST);
+
+        // Adjust window rect to account for DPI scaling of the window frame and
+        // (if enabled) DPI scaling of the content area
+        // This cannot be done until we know what monitor the window was placed on
+        // Only update the restored window rect as the window may be maximized
 
         if (wndconfig->scaleToMonitor)
         {
             float xscale, yscale;
-            _glfwPlatformGetWindowContentScale(window, &xscale, &yscale);
+            _glfwGetMonitorContentScaleWin32(mh, &xscale, &yscale);
 
             if (xscale > 0.f && yscale > 0.f)
             {
@@ -1305,9 +1362,6 @@ static int createNativeWindow(_GLFWwindow* window,
             }
         }
 
-        ClientToScreen(window->win32.handle, (POINT*) &rect.left);
-        ClientToScreen(window->win32.handle, (POINT*) &rect.right);
-
         if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
         {
             AdjustWindowRectExForDpi(&rect, style, FALSE, exStyle,
@@ -1316,11 +1370,30 @@ static int createNativeWindow(_GLFWwindow* window,
         else
             AdjustWindowRectEx(&rect, style, FALSE, exStyle);
 
-        // Only update the restored window rect as the window may be maximized
         GetWindowPlacement(window->win32.handle, &wp);
+        OffsetRect(&rect,
+                   wp.rcNormalPosition.left - rect.left,
+                   wp.rcNormalPosition.top - rect.top);
+
         wp.rcNormalPosition = rect;
         wp.showCmd = SW_HIDE;
         SetWindowPlacement(window->win32.handle, &wp);
+
+        // Adjust rect of maximized undecorated window, because by default Windows will
+        // make such a window cover the whole monitor instead of its workarea
+
+        if (wndconfig->maximized && !wndconfig->decorated)
+        {
+            MONITORINFO mi = { sizeof(mi) };
+            GetMonitorInfoW(mh, &mi);
+
+            SetWindowPos(window->win32.handle, HWND_TOP,
+                         mi.rcWork.left,
+                         mi.rcWork.top,
+                         mi.rcWork.right - mi.rcWork.left,
+                         mi.rcWork.bottom - mi.rcWork.top,
+                         SWP_NOACTIVATE | SWP_NOZORDER);
+        }
     }
 
     DragAcceptFiles(window->win32.handle, TRUE);
@@ -1491,8 +1564,8 @@ void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
         smallIcon = (HICON) GetClassLongPtrW(window->win32.handle, GCLP_HICONSM);
     }
 
-    SendMessage(window->win32.handle, WM_SETICON, ICON_BIG, (LPARAM) bigIcon);
+    SendMessageW(window->win32.handle, WM_SETICON, ICON_BIG, (LPARAM) bigIcon);
-    SendMessage(window->win32.handle, WM_SETICON, ICON_SMALL, (LPARAM) smallIcon);
+    SendMessageW(window->win32.handle, WM_SETICON, ICON_SMALL, (LPARAM) smallIcon);
 
     if (window->win32.bigIcon)
         DestroyIcon(window->win32.bigIcon);
@@ -1672,7 +1745,10 @@ void _glfwPlatformRestoreWindow(_GLFWwindow* window)
 
 void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
 {
+    if (IsWindowVisible(window->win32.handle))
         ShowWindow(window->win32.handle, SW_MAXIMIZE);
+    else
+        maximizeWindowManually(window);
 }
 
 void _glfwPlatformShowWindow(_GLFWwindow* window)
@@ -1759,7 +1835,7 @@ void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
 
         acquireMonitor(window);
 
-        GetMonitorInfo(window->monitor->win32.handle, &mi);
+        GetMonitorInfoW(window->monitor->win32.handle, &mi);
         SetWindowPos(window->win32.handle, HWND_TOPMOST,
                      mi.rcMonitor.left,
                      mi.rcMonitor.top,
@@ -2023,7 +2099,7 @@ void _glfwPlatformWaitEventsTimeout(double timeout)
 
 void _glfwPlatformPostEmptyEvent(void)
 {
-    PostMessage(_glfw.win32.helperWindowHandle, WM_NULL, 0, 0);
+    PostMessageW(_glfw.win32.helperWindowHandle, WM_NULL, 0, 0);
 }
 
 void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos)
@@ -2278,7 +2354,7 @@ VkResult _glfwPlatformCreateWindowSurface(VkInstance instance,
 
     memset(&sci, 0, sizeof(sci));
     sci.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
-    sci.hinstance = GetModuleHandle(NULL);
+    sci.hinstance = GetModuleHandleW(NULL);
     sci.hwnd = window->win32.handle;
 
     err = vkCreateWin32SurfaceKHR(instance, &sci, allocator, surface);

src/wl_init.c

@@ -1195,14 +1195,15 @@ int _glfwPlatformInit(void)
             wl_data_device_manager_get_data_device(_glfw.wl.dataDeviceManager,
                                                    _glfw.wl.seat);
         wl_data_device_add_listener(_glfw.wl.dataDevice, &dataDeviceListener, NULL);
-        _glfw.wl.clipboardString = malloc(4096);
+
+        _glfw.wl.clipboardSize = 4096;
+        _glfw.wl.clipboardString = calloc(_glfw.wl.clipboardSize, 1);
         if (!_glfw.wl.clipboardString)
         {
-            _glfwInputError(GLFW_PLATFORM_ERROR,
+            _glfwInputError(GLFW_OUT_OF_MEMORY,
                             "Wayland: Unable to allocate clipboard memory");
             return GLFW_FALSE;
         }
-        _glfw.wl.clipboardSize = 4096;
     }
 
     return GLFW_TRUE;
@@ -1293,9 +1294,7 @@ void _glfwPlatformTerminate(void)
     if (_glfw.wl.cursorTimerfd >= 0)
         close(_glfw.wl.cursorTimerfd);
 
-    if (_glfw.wl.clipboardString)
     free(_glfw.wl.clipboardString);
-    if (_glfw.wl.clipboardSendString)
     free(_glfw.wl.clipboardSendString);
 }
 

src/wl_window.c

@@ -39,7 +39,8 @@
 #include <sys/mman.h>
 #include <sys/timerfd.h>
 #include <poll.h>
-
+#include <signal.h>
+#include <time.h>
 
 static void shellSurfaceHandlePing(void* data,
                                    struct wl_shell_surface* shellSurface,
@@ -248,6 +249,53 @@ static struct wl_buffer* createShmBuffer(const GLFWimage* image)
     return buffer;
 }
 
+// Wait for data to arrive on any of the specified file descriptors
+//
+static GLFWbool waitForData(struct pollfd* fds, nfds_t count, double* timeout)
+{
+    for (;;)
+    {
+        if (timeout)
+        {
+            const uint64_t base = _glfwPlatformGetTimerValue();
+
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__)
+            const time_t seconds = (time_t) *timeout;
+            const long nanoseconds = (long) ((*timeout - seconds) * 1e9);
+            const struct timespec ts = { seconds, nanoseconds };
+            const int result = ppoll(fds, count, &ts, NULL);
+#elif defined(__NetBSD__)
+            const time_t seconds = (time_t) *timeout;
+            const long nanoseconds = (long) ((*timeout - seconds) * 1e9);
+            const struct timespec ts = { seconds, nanoseconds };
+            const int result = pollts(fds, count, &ts, NULL);
+#else
+            const int milliseconds = (int) (*timeout * 1e3);
+            const int result = poll(fds, count, milliseconds);
+#endif
+            const int error = errno; // clock_gettime may overwrite our error
+
+            *timeout -= (_glfwPlatformGetTimerValue() - base) /
+                (double) _glfwPlatformGetTimerFrequency();
+
+            if (result > 0)
+                return GLFW_TRUE;
+            else if (result == -1 && error != EINTR && error != EAGAIN)
+                return GLFW_FALSE;
+            else if (*timeout <= 0.0)
+                return GLFW_FALSE;
+        }
+        else
+        {
+            const int result = poll(fds, count, -1);
+            if (result > 0)
+                return GLFW_TRUE;
+            else if (result == -1 && errno != EINTR && errno != EAGAIN)
+                return GLFW_FALSE;
+        }
+    }
+}
+
 static void createDecoration(_GLFWdecorationWayland* decoration,
                              struct wl_surface* parent,
                              struct wl_buffer* buffer, GLFWbool opaque,
@@ -404,27 +452,25 @@ static void resizeWindow(_GLFWwindow* window)
 
 static void checkScaleChange(_GLFWwindow* window)
 {
-    int scale = 1;
-    int i;
-    int monitorScale;
-
     // Check if we will be able to set the buffer scale or not.
     if (_glfw.wl.compositorVersion < 3)
         return;
 
     // Get the scale factor from the highest scale monitor.
-    for (i = 0; i < window->wl.monitorsCount; ++i)
+    int maxScale = 1;
+
+    for (int i = 0; i < window->wl.monitorsCount; i++)
     {
-        monitorScale = window->wl.monitors[i]->wl.scale;
+        const int scale = window->wl.monitors[i]->wl.scale;
-        if (scale < monitorScale)
+        if (maxScale < scale)
-            scale = monitorScale;
+            maxScale = scale;
     }
 
     // Only change the framebuffer size if the scale changed.
-    if (scale != window->wl.scale)
+    if (window->wl.scale != maxScale)
     {
-        window->wl.scale = scale;
+        window->wl.scale = maxScale;
-        wl_surface_set_buffer_scale(window->wl.surface, scale);
+        wl_surface_set_buffer_scale(window->wl.surface, maxScale);
         resizeWindow(window);
     }
 }
@@ -833,8 +879,28 @@ static void incrementCursorImage(_GLFWwindow* window)
     }
 }
 
-static void handleEvents(int timeout)
+static GLFWbool flushDisplay(void)
 {
+    while (wl_display_flush(_glfw.wl.display) == -1)
+    {
+        if (errno != EAGAIN)
+            return GLFW_FALSE;
+
+        struct pollfd fd = { wl_display_get_fd(_glfw.wl.display), POLLOUT };
+
+        while (poll(&fd, 1, -1) == -1)
+        {
+            if (errno != EINTR && errno != EAGAIN)
+                return GLFW_FALSE;
+        }
+    }
+
+    return GLFW_TRUE;
+}
+
+static void handleEvents(double* timeout)
+{
+    GLFWbool event = GLFW_FALSE;
     struct pollfd fds[] =
     {
         { wl_display_get_fd(_glfw.wl.display), POLLIN },
@@ -842,13 +908,17 @@ static void handleEvents(int timeout)
         { _glfw.wl.cursorTimerfd, POLLIN },
     };
 
+    while (!event)
+    {
         while (wl_display_prepare_read(_glfw.wl.display) != 0)
             wl_display_dispatch_pending(_glfw.wl.display);
 
         // If an error other than EAGAIN happens, we have likely been disconnected
         // from the Wayland session; try to handle that the best we can.
-    if (wl_display_flush(_glfw.wl.display) < 0 && errno != EAGAIN)
+        if (!flushDisplay())
         {
+            wl_display_cancel_read(_glfw.wl.display);
+
             _GLFWwindow* window = _glfw.windowListHead;
             while (window)
             {
@@ -856,16 +926,20 @@ static void handleEvents(int timeout)
                 window = window->next;
             }
 
+            return;
+        }
+
+        if (!waitForData(fds, 3, timeout))
+        {
             wl_display_cancel_read(_glfw.wl.display);
             return;
         }
 
-    if (poll(fds, 3, timeout) > 0)
-    {
         if (fds[0].revents & POLLIN)
         {
             wl_display_read_events(_glfw.wl.display);
-            wl_display_dispatch_pending(_glfw.wl.display);
+            if (wl_display_dispatch_pending(_glfw.wl.display) > 0)
+                event = GLFW_TRUE;
         }
         else
             wl_display_cancel_read(_glfw.wl.display);
@@ -886,6 +960,8 @@ static void handleEvents(int timeout)
                     _glfwInputTextWayland(_glfw.wl.keyboardFocus,
                                           _glfw.wl.keyboardLastScancode);
                 }
+
+                event = GLFW_TRUE;
             }
         }
 
@@ -894,11 +970,12 @@ static void handleEvents(int timeout)
             uint64_t repeats;
 
             if (read(_glfw.wl.cursorTimerfd, &repeats, sizeof(repeats)) == 8)
+            {
                 incrementCursorImage(_glfw.wl.pointerFocus);
+                event = GLFW_TRUE;
+            }
         }
     }
-    else
-        wl_display_cancel_read(_glfw.wl.display);
 }
 
 //////////////////////////////////////////////////////////////////////////
@@ -1288,22 +1365,24 @@ GLFWbool _glfwPlatformRawMouseMotionSupported(void)
 
 void _glfwPlatformPollEvents(void)
 {
-    handleEvents(0);
+    double timeout = 0.0;
+    handleEvents(&timeout);
 }
 
 void _glfwPlatformWaitEvents(void)
 {
-    handleEvents(-1);
+    handleEvents(NULL);
 }
 
 void _glfwPlatformWaitEventsTimeout(double timeout)
 {
-    handleEvents((int) (timeout * 1e3));
+    handleEvents(&timeout);
 }
 
 void _glfwPlatformPostEmptyEvent(void)
 {
     wl_display_sync(_glfw.wl.display);
+    flushDisplay();
 }
 
 void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos)
@@ -1793,7 +1872,7 @@ static GLFWbool growClipboardString(void)
     clipboard = realloc(clipboard, _glfw.wl.clipboardSize * 2);
     if (!clipboard)
     {
-        _glfwInputError(GLFW_PLATFORM_ERROR,
+        _glfwInputError(GLFW_OUT_OF_MEMORY,
                         "Wayland: Impossible to grow clipboard string");
         return GLFW_FALSE;
     }
@@ -1828,9 +1907,9 @@ const char* _glfwPlatformGetClipboardString(void)
     close(fds[1]);
 
     // XXX: this is a huge hack, this function shouldn’t be synchronous!
-    handleEvents(-1);
+    handleEvents(NULL);
 
-    while (1)
+    for (;;)
     {
         // Grow the clipboard if we need to paste something bigger, there is no
         // shrink operation yet.

src/x11_init.c

@@ -36,6 +36,9 @@
 #include <limits.h>
 #include <stdio.h>
 #include <locale.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
 
 
 // Translate the X11 KeySyms for a key to a GLFW key code
@@ -568,7 +571,7 @@ static void detectEWMH(void)
 //
 static GLFWbool initExtensions(void)
 {
-#if defined(__OpenBSD__)
+#if defined(__OpenBSD__) || defined(__NetBSD__)
     _glfw.x11.vidmode.handle = _glfw_dlopen("libXxf86vm.so");
 #else
     _glfw.x11.vidmode.handle = _glfw_dlopen("libXxf86vm.so.1");
@@ -592,7 +595,7 @@ static GLFWbool initExtensions(void)
 
 #if defined(__CYGWIN__)
     _glfw.x11.xi.handle = _glfw_dlopen("libXi-6.so");
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
     _glfw.x11.xi.handle = _glfw_dlopen("libXi.so");
 #else
     _glfw.x11.xi.handle = _glfw_dlopen("libXi.so.6");
@@ -624,7 +627,7 @@ static GLFWbool initExtensions(void)
 
 #if defined(__CYGWIN__)
     _glfw.x11.randr.handle = _glfw_dlopen("libXrandr-2.so");
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
     _glfw.x11.randr.handle = _glfw_dlopen("libXrandr.so");
 #else
     _glfw.x11.randr.handle = _glfw_dlopen("libXrandr.so.2");
@@ -718,7 +721,7 @@ static GLFWbool initExtensions(void)
 
 #if defined(__CYGWIN__)
     _glfw.x11.xcursor.handle = _glfw_dlopen("libXcursor-1.so");
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
     _glfw.x11.xcursor.handle = _glfw_dlopen("libXcursor.so");
 #else
     _glfw.x11.xcursor.handle = _glfw_dlopen("libXcursor.so.1");
@@ -741,7 +744,7 @@ static GLFWbool initExtensions(void)
 
 #if defined(__CYGWIN__)
     _glfw.x11.xinerama.handle = _glfw_dlopen("libXinerama-1.so");
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
     _glfw.x11.xinerama.handle = _glfw_dlopen("libXinerama.so");
 #else
     _glfw.x11.xinerama.handle = _glfw_dlopen("libXinerama.so.1");
@@ -794,7 +797,7 @@ static GLFWbool initExtensions(void)
 
 #if defined(__CYGWIN__)
     _glfw.x11.x11xcb.handle = _glfw_dlopen("libX11-xcb-1.so");
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
     _glfw.x11.x11xcb.handle = _glfw_dlopen("libX11-xcb.so");
 #else
     _glfw.x11.x11xcb.handle = _glfw_dlopen("libX11-xcb.so.1");
@@ -807,7 +810,7 @@ static GLFWbool initExtensions(void)
 
 #if defined(__CYGWIN__)
     _glfw.x11.xrender.handle = _glfw_dlopen("libXrender-1.so");
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__NetBSD__)
     _glfw.x11.xrender.handle = _glfw_dlopen("libXrender.so");
 #else
     _glfw.x11.xrender.handle = _glfw_dlopen("libXrender.so.1");
@@ -974,6 +977,37 @@ static Window createHelperWindow(void)
                          CWEventMask, &wa);
 }
 
+// Create the pipe for empty events without assumuing the OS has pipe2(2)
+//
+static GLFWbool createEmptyEventPipe(void)
+{
+    if (pipe(_glfw.x11.emptyEventPipe) != 0)
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "X11: Failed to create empty event pipe: %s",
+                        strerror(errno));
+        return GLFW_FALSE;
+    }
+
+    for (int i = 0; i < 2; i++)
+    {
+        const int sf = fcntl(_glfw.x11.emptyEventPipe[i], F_GETFL, 0);
+        const int df = fcntl(_glfw.x11.emptyEventPipe[i], F_GETFD, 0);
+
+        if (sf == -1 || df == -1 ||
+            fcntl(_glfw.x11.emptyEventPipe[i], F_SETFL, sf | O_NONBLOCK) == -1 ||
+            fcntl(_glfw.x11.emptyEventPipe[i], F_SETFD, df | FD_CLOEXEC) == -1)
+        {
+            _glfwInputError(GLFW_PLATFORM_ERROR,
+                            "X11: Failed to set flags for empty event pipe: %s",
+                            strerror(errno));
+            return GLFW_FALSE;
+        }
+    }
+
+    return GLFW_TRUE;
+}
+
 // X error handler
 //
 static int errorHandler(Display *display, XErrorEvent* event)
@@ -1095,6 +1129,9 @@ int _glfwPlatformInit(void)
 
     getSystemContentScale(&_glfw.x11.contentScaleX, &_glfw.x11.contentScaleY);
 
+    if (!createEmptyEventPipe())
+        return GLFW_FALSE;
+
     if (!initExtensions())
         return GLFW_FALSE;
 
@@ -1212,6 +1249,12 @@ void _glfwPlatformTerminate(void)
 #if defined(__linux__)
     _glfwTerminateJoysticksLinux();
 #endif
+
+    if (_glfw.x11.emptyEventPipe[0] || _glfw.x11.emptyEventPipe[1])
+    {
+        close(_glfw.x11.emptyEventPipe[0]);
+        close(_glfw.x11.emptyEventPipe[1]);
+    }
 }
 
 const char* _glfwPlatformGetVersionString(void)

src/x11_platform.h

@@ -244,6 +244,7 @@ typedef struct _GLFWlibraryX11
     double          restoreCursorPosX, restoreCursorPosY;
     // The window whose disabled cursor mode is active
     _GLFWwindow*    disabledCursorWindow;
+    int             emptyEventPipe[2];
 
     // Window manager atoms
     Atom            NET_SUPPORTED;

src/x11_window.c

@@ -27,12 +27,16 @@
 // It is fine to use C99 in this file because it will not be built with VS
 //========================================================================
 
+#define _GNU_SOURCE
+
 #include "internal.h"
 
 #include <X11/cursorfont.h>
 #include <X11/Xmd.h>
 
-#include <sys/select.h>
+#include <poll.h>
+#include <signal.h>
+#include <time.h>
 
 #include <string.h>
 #include <stdio.h>
@@ -56,50 +60,126 @@
 
 #define _GLFW_XDND_VERSION 5
 
-
+// Wait for data to arrive on any of the specified file descriptors
-// Wait for data to arrive using select
-// This avoids blocking other threads via the per-display Xlib lock that also
-// covers GLX functions
 //
-static GLFWbool waitForEvent(double* timeout)
+static GLFWbool waitForData(struct pollfd* fds, nfds_t count, double* timeout)
 {
-    fd_set fds;
-    const int fd = ConnectionNumber(_glfw.x11.display);
-    int count = fd + 1;
-
-#if defined(__linux__)
-    if (_glfw.linjs.inotify > fd)
-        count = _glfw.linjs.inotify + 1;
-#endif
     for (;;)
     {
-        FD_ZERO(&fds);
-        FD_SET(fd, &fds);
-#if defined(__linux__)
-        if (_glfw.linjs.inotify > 0)
-            FD_SET(_glfw.linjs.inotify, &fds);
-#endif
-
         if (timeout)
         {
-            const long seconds = (long) *timeout;
-            const long microseconds = (long) ((*timeout - seconds) * 1e6);
-            struct timeval tv = { seconds, microseconds };
             const uint64_t base = _glfwPlatformGetTimerValue();
 
-            const int result = select(count, &fds, NULL, NULL, &tv);
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__)
-            const int error = errno;
+            const time_t seconds = (time_t) *timeout;
+            const long nanoseconds = (long) ((*timeout - seconds) * 1e9);
+            const struct timespec ts = { seconds, nanoseconds };
+            const int result = ppoll(fds, count, &ts, NULL);
+#elif defined(__NetBSD__)
+            const time_t seconds = (time_t) *timeout;
+            const long nanoseconds = (long) ((*timeout - seconds) * 1e9);
+            const struct timespec ts = { seconds, nanoseconds };
+            const int result = pollts(fds, count, &ts, NULL);
+#else
+            const int milliseconds = (int) (*timeout * 1e3);
+            const int result = poll(fds, count, milliseconds);
+#endif
+            const int error = errno; // clock_gettime may overwrite our error
 
             *timeout -= (_glfwPlatformGetTimerValue() - base) /
                 (double) _glfwPlatformGetTimerFrequency();
 
             if (result > 0)
                 return GLFW_TRUE;
-            if ((result == -1 && error == EINTR) || *timeout <= 0.0)
+            else if (result == -1 && error != EINTR && error != EAGAIN)
+                return GLFW_FALSE;
+            else if (*timeout <= 0.0)
                 return GLFW_FALSE;
         }
-        else if (select(count, &fds, NULL, NULL, NULL) != -1 || errno != EINTR)
+        else
+        {
+            const int result = poll(fds, count, -1);
+            if (result > 0)
                 return GLFW_TRUE;
+            else if (result == -1 && errno != EINTR && errno != EAGAIN)
+                return GLFW_FALSE;
+        }
+    }
+}
+
+// Wait for event data to arrive on the X11 display socket
+// This avoids blocking other threads via the per-display Xlib lock that also
+// covers GLX functions
+//
+static GLFWbool waitForX11Event(double* timeout)
+{
+    struct pollfd fd = { ConnectionNumber(_glfw.x11.display), POLLIN };
+
+    while (!XPending(_glfw.x11.display))
+    {
+        if (!waitForData(&fd, 1, timeout))
+            return GLFW_FALSE;
+    }
+
+    return GLFW_TRUE;
+}
+
+// Wait for event data to arrive on any event file descriptor
+// This avoids blocking other threads via the per-display Xlib lock that also
+// covers GLX functions
+//
+static GLFWbool waitForAnyEvent(double* timeout)
+{
+    nfds_t count = 2;
+    struct pollfd fds[3] =
+    {
+        { ConnectionNumber(_glfw.x11.display), POLLIN },
+        { _glfw.x11.emptyEventPipe[0], POLLIN }
+    };
+
+#if defined(__linux__)
+    if (_glfw.linjs.inotify > 0)
+        fds[count++] = (struct pollfd) { _glfw.linjs.inotify, POLLIN };
+#endif
+
+    while (!XPending(_glfw.x11.display))
+    {
+        if (!waitForData(fds, count, timeout))
+            return GLFW_FALSE;
+
+        for (int i = 1; i < count; i++)
+        {
+            if (fds[i].revents & POLLIN)
+                return GLFW_TRUE;
+        }
+    }
+
+    return GLFW_TRUE;
+}
+
+// Writes a byte to the empty event pipe
+//
+static void writeEmptyEvent(void)
+{
+    for (;;)
+    {
+        const char byte = 0;
+        const int result = write(_glfw.x11.emptyEventPipe[1], &byte, 1);
+        if (result == 1 || (result == -1 && errno != EINTR))
+            break;
+    }
+}
+
+// Drains available data from the empty event pipe
+//
+static void drainEmptyEvents(void)
+{
+    for (;;)
+    {
+        char dummy[64];
+        const int result = read(_glfw.x11.emptyEventPipe[0], dummy, sizeof(dummy));
+        if (result == -1 && errno != EINTR)
+            break;
     }
 }
 
@@ -116,7 +196,7 @@ static GLFWbool waitForVisibilityNotify(_GLFWwindow* window)
                                    VisibilityNotify,
                                    &dummy))
     {
-        if (!waitForEvent(&timeout))
+        if (!waitForX11Event(&timeout))
             return GLFW_FALSE;
     }
 
@@ -971,7 +1051,7 @@ static const char* getSelectionString(Atom selection)
                                        SelectionNotify,
                                        &notification))
         {
-            waitForEvent(NULL);
+            waitForX11Event(NULL);
         }
 
         if (notification.xselection.property == None)
@@ -1007,7 +1087,7 @@ static const char* getSelectionString(Atom selection)
                                       isSelPropNewValueNotify,
                                       (XPointer) &notification))
                 {
-                    waitForEvent(NULL);
+                    waitForX11Event(NULL);
                 }
 
                 XFree(data);
@@ -1252,7 +1332,7 @@ static void processEvent(XEvent *event)
                 //       (the server never sends a timestamp of zero)
                 // NOTE: Timestamp difference is compared to handle wrap-around
                 Time diff = event->xkey.time - window->x11.keyPressTimes[keycode];
-                if (diff == event->xkey.time || (diff > 0 && diff < (1 << 31)))
+                if (diff == event->xkey.time || (diff > 0 && diff < ((Time)1 << 31)))
                 {
                     if (keycode)
                         _glfwInputKey(window, key, keycode, GLFW_PRESS, mods);
@@ -1938,7 +2018,7 @@ void _glfwPushSelectionToManagerX11(void)
             }
         }
 
-        waitForEvent(NULL);
+        waitForX11Event(NULL);
     }
 }
 
@@ -2256,7 +2336,7 @@ void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
                               isFrameExtentsEvent,
                               (XPointer) window))
         {
-            if (!waitForEvent(&timeout))
+            if (!waitForX11Event(&timeout))
             {
                 _glfwInputError(GLFW_PLATFORM_ERROR,
                                 "X11: The window manager has a broken _NET_REQUEST_FRAME_EXTENTS implementation; please report this issue");
@@ -2748,7 +2828,7 @@ GLFWbool _glfwPlatformRawMouseMotionSupported(void)
 
 void _glfwPlatformPollEvents(void)
 {
-    _GLFWwindow* window;
+    drainEmptyEvents();
 
 #if defined(__linux__)
     _glfwDetectJoystickConnectionLinux();
@@ -2762,7 +2842,7 @@ void _glfwPlatformPollEvents(void)
         processEvent(&event);
     }
 
-    window = _glfw.x11.disabledCursorWindow;
+    _GLFWwindow* window = _glfw.x11.disabledCursorWindow;
     if (window)
     {
         int width, height;
@@ -2782,32 +2862,19 @@ void _glfwPlatformPollEvents(void)
 
 void _glfwPlatformWaitEvents(void)
 {
-    while (!XPending(_glfw.x11.display))
+    waitForAnyEvent(NULL);
-        waitForEvent(NULL);
-
     _glfwPlatformPollEvents();
 }
 
 void _glfwPlatformWaitEventsTimeout(double timeout)
 {
-    while (!XPending(_glfw.x11.display))
+    waitForAnyEvent(&timeout);
-    {
-        if (!waitForEvent(&timeout))
-            break;
-    }
-
     _glfwPlatformPollEvents();
 }
 
 void _glfwPlatformPostEmptyEvent(void)
 {
-    XEvent event = { ClientMessage };
+    writeEmptyEvent();
-    event.xclient.window = _glfw.x11.helperWindowHandle;
-    event.xclient.format = 32; // Data is 32-bit longs
-    event.xclient.message_type = _glfw.x11.NULL_;
-
-    XSendEvent(_glfw.x11.display, _glfw.x11.helperWindowHandle, False, 0, &event);
-    XFlush(_glfw.x11.display);
 }
 
 void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos)