diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp
index 89b1ebd1..9447fcfc 100644
--- a/src/plugins/platforms/windows/qwindowscontext.cpp
+++ b/src/plugins/platforms/windows/qwindowscontext.cpp
@@ -459,7 +459,7 @@ QtWindows::DpiAwareness QWindowsContext::windowDpiAwareness(HWND hwnd)
 
     if (QWindowsContext::user32dll.getWindowDpiAwarenessContext)
     {
-        const auto context = GetWindowDpiAwarenessContext(hwnd);
+        const auto context = QWindowsContext::user32dll.getWindowDpiAwarenessContext(hwnd);
         return dpiAwarenessContextToQtDpiAwareness(context);
     }
 
@@ -477,7 +477,7 @@ QtWindows::DpiAwareness QWindowsContext::processDpiAwareness()
         // return the default DPI_AWARENESS_CONTEXT for the process if
         // SetThreadDpiAwarenessContext() was never called. So we can use
         // it as an equivalent.
-        const auto context = GetThreadDpiAwarenessContext();
+        const auto context = QWindowsContext::user32dll.getThreadDpiAwarenessContext();
         return dpiAwarenessContextToQtDpiAwareness(context);
     }
 
@@ -990,8 +990,8 @@ void QWindowsContext::forceNcCalcSize(HWND hwnd)
 bool QWindowsContext::systemParametersInfo(unsigned action, unsigned param, void *out,
                                            unsigned dpi)
 {
-    const BOOL result = dpi != 0
-        ? SystemParametersInfoForDpi(action, param, out, 0, dpi)
+    const BOOL result = (QWindowsContext::user32dll.systemParametersInfoForDpi != nullptr && dpi != 0)
+        ? QWindowsContext::user32dll.systemParametersInfoForDpi(action, param, out, 0, dpi)
         : SystemParametersInfo(action, param, out, 0);
     return result == TRUE;
 }
diff --git a/src/plugins/platforms/windows/qwindowscontext.h b/src/plugins/platforms/windows/qwindowscontext.h
index d859e00f..d35c58de 100644
--- a/src/plugins/platforms/windows/qwindowscontext.h
+++ b/src/plugins/platforms/windows/qwindowscontext.h
@@ -68,13 +68,13 @@ struct QWindowsUser32DLL
     typedef BOOL (WINAPI *SetDisplayAutoRotationPreferences)(DWORD);
     typedef BOOL (WINAPI *AdjustWindowRectExForDpi)(LPRECT,DWORD,BOOL,DWORD,UINT);
     typedef BOOL (WINAPI *EnableNonClientDpiScaling)(HWND);
-    typedef int  (WINAPI *GetWindowDpiAwarenessContext)(HWND);
-    typedef int  (WINAPI *GetAwarenessFromDpiAwarenessContext)(int);
+    typedef DPI_AWARENESS_CONTEXT (WINAPI *GetWindowDpiAwarenessContext)(HWND);
+    typedef DPI_AWARENESS (WINAPI *GetAwarenessFromDpiAwarenessContext)(int);
     typedef BOOL (WINAPI *SystemParametersInfoForDpi)(UINT, UINT, PVOID, UINT, UINT);
     typedef int  (WINAPI *GetDpiForWindow)(HWND);
     typedef BOOL (WINAPI *GetSystemMetricsForDpi)(INT, UINT);
     typedef BOOL (WINAPI *AreDpiAwarenessContextsEqual)(DPI_AWARENESS_CONTEXT, DPI_AWARENESS_CONTEXT);
-    typedef int (WINAPI *GetThreadDpiAwarenessContext)();
+    typedef DPI_AWARENESS_CONTEXT (WINAPI *GetThreadDpiAwarenessContext)();
     typedef BOOL (WINAPI *IsValidDpiAwarenessContext)(DPI_AWARENESS_CONTEXT);
     
     // Windows pointer functions (Windows 8 or later).