Added glfwPostEmptyEvent.

src/cocoa_window.m

@@ -1147,6 +1147,20 @@ void _glfwPlatformWaitEvents(void)
     _glfwPlatformPollEvents();
 }
 
+void _glfwPlatformPostEmptyEvent(void)
+{
+    NSEvent* event = [NSEvent otherEventWithType:NSApplicationDefined
+                                        location:NSMakePoint(0, 0)
+                                   modifierFlags:0
+                                       timestamp:0
+                                    windowNumber:0
+                                         context:nil
+                                         subtype:0
+                                           data1:0
+                                           data2:0];
+    [NSApp postEvent:event atStart:YES];
+}
+
 void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y)
 {
     setModeCursor(window);

src/internal.h

@@ -539,6 +539,11 @@ void _glfwPlatformPollEvents(void);
  */
 void _glfwPlatformWaitEvents(void);
 
+/*! @copydoc glfwPostEmptyEvent
+ *  @ingroup platform
+ */
+void _glfwPlatformPostEmptyEvent(void);
+
 /*! @copydoc glfwMakeContextCurrent
  *  @ingroup platform
  */

src/win32_window.c

@@ -1181,6 +1181,12 @@ void _glfwPlatformWaitEvents(void)
     _glfwPlatformPollEvents();
 }
 
+void _glfwPlatformPostEmptyEvent(void)
+{
+    _GLFWwindow* window = _glfw.windowListHead;
+    PostMessage(window->win32.handle, WM_NULL, 0, 0);
+}
+
 void _glfwPlatformSetCursorPos(_GLFWwindow* window, double xpos, double ypos)
 {
     POINT pos = { (int) xpos, (int) ypos };

src/window.c

@@ -669,6 +669,20 @@ GLFWAPI void glfwPollEvents(void)
 GLFWAPI void glfwWaitEvents(void)
 {
     _GLFW_REQUIRE_INIT();
+
+    if (!_glfw.windowListHead)
+        return;
+
     _glfwPlatformWaitEvents();
 }
 
+GLFWAPI void glfwPostEmptyEvent(void)
+{
+    _GLFW_REQUIRE_INIT();
+
+    if (!_glfw.windowListHead)
+        return;
+
+    _glfwPlatformPostEmptyEvent();
+}
+

src/x11_window.c

@@ -1305,6 +1305,21 @@ void _glfwPlatformWaitEvents(void)
     _glfwPlatformPollEvents();
 }
 
+void _glfwPlatformPostEmptyEvent(void)
+{
+    XEvent event;
+    _GLFWwindow* window = _glfw.windowListHead;
+
+    memset(&event, 0, sizeof(event));
+    event.type = ClientMessage;
+    event.xclient.window = window->x11.handle;
+    event.xclient.format = 32; // Data is 32-bit longs
+    event.xclient.message_type = _glfw.x11._NULL;
+
+    XSendEvent(_glfw.x11.display, window->x11.handle, False, 0, &event);
+    XFlush(_glfw.x11.display);
+}
+
 void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y)
 {
     // Store the new position so it can be recognized later