From 7bda95494ded1aaf8460976f9b072700863d2eeb Mon Sep 17 00:00:00 2001
From: fallenoak <git@fallenoak.me>
Date: Tue, 14 Mar 2023 16:20:43 -0500
Subject: [PATCH] feat(gx): handle WM_ACTIVATE in d3d backend

---
 src/gx/d3d/CGxDeviceD3d.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/gx/d3d/CGxDeviceD3d.cpp b/src/gx/d3d/CGxDeviceD3d.cpp
index 2c2909b..e6f5d93 100644
--- a/src/gx/d3d/CGxDeviceD3d.cpp
+++ b/src/gx/d3d/CGxDeviceD3d.cpp
@@ -293,7 +293,14 @@ LRESULT CGxDeviceD3d::WindowProcD3d(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM
     }
 
     case WM_ACTIVATE: {
-        // TODO
+        if (wParam == WA_INACTIVE && !device->IDevIsWindowed()) {
+            CRect windowRect = { 0.0f, 0.f, 0.0f, 0.0f };
+            device->DeviceWM(GxWM_Size, reinterpret_cast<uintptr_t>(&windowRect), 1);
+        } else if (wParam == WA_ACTIVE && !device->IDevIsWindowed()) {
+            CRect windowRect;
+            device->CapsWindowSizeInScreenCoords(windowRect);
+            device->DeviceWM(GxWM_Size, reinterpret_cast<uintptr_t>(&windowRect), 3);
+        }
 
         break;
     }