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

src/win32_init.c

@@ -39,6 +39,10 @@ static const GUID _glfw_GUID_DEVINTERFACE_HID =
 
 #if defined(_GLFW_USE_HYBRID_HPG) || defined(_GLFW_USE_OPTIMUS_HPG)
 
+#if defined(_GLFW_BUILD_DLL)
+ #warning "These symbols must be exported by the executable and have no effect in a DLL"
+#endif
+
 // Executables (but not DLLs) exporting this symbol with this value will be
 // automatically directed to the high-performance GPU on Nvidia Optimus systems
 // with up-to-date drivers

src/win32_window.c

@@ -505,7 +505,17 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
             case WM_NCCREATE:
             {
                 if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
-                    EnableNonClientDpiScaling(hWnd);
+                {
+                    const CREATESTRUCTW* cs = (const CREATESTRUCTW*) lParam;
+                    const _GLFWwndconfig* wndconfig = cs->lpCreateParams;
+
+                    // On per-monitor DPI aware V1 systems, only enable
+                    // non-client scaling for windows that scale the client area
+                    // We need WM_GETDPISCALEDSIZE from V2 to keep the client
+                    // area static when the non-client area is scaled
+                    if (wndconfig && wndconfig->scaleToMonitor)
+                        EnableNonClientDpiScaling(hWnd);
+                }
 
                 break;
             }
@@ -1131,9 +1141,11 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
             const float xscale = HIWORD(wParam) / (float) USER_DEFAULT_SCREEN_DPI;
             const float yscale = LOWORD(wParam) / (float) USER_DEFAULT_SCREEN_DPI;
 
-            // Only apply the suggested size if the OS is new enough to have
-            // sent a WM_GETDPISCALEDSIZE before this
-            if (_glfwIsWindows10CreatorsUpdateOrGreaterWin32())
+            // Resize windowed mode windows that either permit rescaling or that
+            // need it to compensate for non-client area scaling
+            if (!window->monitor &&
+                (window->win32.scaleToMonitor ||
+                 _glfwIsWindows10CreatorsUpdateOrGreaterWin32()))
             {
                 RECT* suggested = (RECT*) lParam;
                 SetWindowPos(window->win32.handle, HWND_TOP,
@@ -1248,7 +1260,7 @@ static int createNativeWindow(_GLFWwindow* window,
                                            NULL, // No parent window
                                            NULL, // No window menu
                                            GetModuleHandleW(NULL),
-                                           NULL);
+                                           (LPVOID) wndconfig);
 
     free(wideTitle);
 

src/wl_monitor.c

@@ -88,6 +88,14 @@ static void outputHandleDone(void* data, struct wl_output* output)
 {
     struct _GLFWmonitor *monitor = data;
 
+    if (monitor->widthMM <= 0 || monitor->heightMM <= 0)
+    {
+        // If Wayland does not provide a physical size, assume the default 96 DPI
+        const GLFWvidmode* mode = &monitor->modes[monitor->wl.currentMode];
+        monitor->widthMM  = (int) (mode->width * 25.4f / 96.f);
+        monitor->heightMM = (int) (mode->height * 25.4f / 96.f);
+    }
+
     _glfwInputMonitor(monitor, GLFW_CONNECTED, _GLFW_INSERT_LAST);
 }
 

src/x11_window.c

@@ -2500,7 +2500,11 @@ void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
     }
 
     if (window->monitor)
+    {
+        _glfwPlatformSetWindowDecorated(window, window->decorated);
+        _glfwPlatformSetWindowFloating(window, window->floating);
         releaseMonitor(window);
+    }
 
     _glfwInputWindowMonitor(window, monitor);
     updateNormalHints(window, width, height);