Refactor GPU state refresh mechanism

Refactor GPU state refresh handling to use event-driven approach instead of timers. Update comments for clarity.

Author: Tiflit

src/win/win_helpers.cpp

@@ -1,23 +1,19 @@
 #include "win_helpers.h"
 
 #include "../util/startup.h"
-#include "../tray/tray_menu.h"
-#include "../gpu/gpu_state.h"
 #include "../util/logging.h"
 
 // Globals from main.cpp
 extern GpuState g_displayGpuState;
 extern GpuState g_renderGpuState;
-extern bool g_forceRenderGpu;
+extern bool     g_forceRenderGpu;
 
-// Forward declaration from main.cpp
+// From main.cpp
 extern void RefreshGpuState(HWND hwnd);
 
-// Restart GPU driver (same as Ctrl+Win+Shift+B)
+// Restart GPU driver (Ctrl+Win+Shift+B)
 void RestartGpuDriver()
 {
-    // This triggers a graphics subsystem reset
-    // Equivalent to pressing Ctrl+Win+Shift+B
     keybd_event(VK_CONTROL, 0, 0, 0);
     keybd_event(VK_LWIN,    0, 0, 0);
     keybd_event(VK_SHIFT,   0, 0, 0);
@@ -33,8 +29,10 @@ LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
     switch (msg)
     {
-    case WM_TIMER:
-        // Periodic GPU refresh
+    case WM_DISPLAYCHANGE:
+    case WM_DEVICECHANGE:
+    case WM_POWERBROADCAST:
+        // Event-driven refresh: no polling, no timers
         RefreshGpuState(hwnd);
         return 0;