Fixed glfwSetWindowSize stealing focus.

README.md

@@ -49,6 +49,7 @@ guide in the GLFW documentation.
  - [Win32] Bugfix: Negative window positions were reported incorrectly
  - [Win32] Bugfix: The iconify callback was not triggered when switching away
                    from a full screen window using Alt+Tab
+ - [Win32] Bugfix: Resizing a window with `glfwSetWindowSize` gave it focus
  - [Cocoa] Added dependency on CoreVideo framework for refresh rate retrieval
  - [Cocoa] Enabled Lion full screen for resizable windowed mode windows
  - [Cocoa] Moved to Cocoa API for application transformation and activation

src/win32_window.c

@@ -1034,7 +1034,7 @@ void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
 
         SetWindowPos(window->win32.handle, HWND_TOP,
                      0, 0, fullWidth, fullHeight,
-                     SWP_NOOWNERZORDER | SWP_NOMOVE | SWP_NOZORDER);
+                     SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOMOVE | SWP_NOZORDER);
     }
 }