user32: Implement IsValidDpiAwarenessContext().

dlls/user32/sysparams.c

@@ -2943,6 +2943,17 @@ BOOL WINAPI EnumDisplaySettingsExW(LPCWSTR lpszDeviceName, DWORD iModeNum,
 }
 
 /***********************************************************************
+ *              IsValidDpiAwarenessContext   (USER32.@)
+ */
+BOOL WINAPI IsValidDpiAwarenessContext( DPI_AWARENESS_CONTEXT context )
+{
+    return (context == DPI_AWARENESS_CONTEXT_UNAWARE ||
+            context == DPI_AWARENESS_CONTEXT_SYSTEM_AWARE ||
+            context == DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE ||
+            context == DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
+}
+
+/***********************************************************************
  *              SetProcessDPIAware   (USER32.@)
  */
 BOOL WINAPI SetProcessDPIAware(void)

dlls/user32/user32.spec

@@ -460,6 +460,7 @@
 @ stdcall IsRectEmpty(ptr)
 # @ stub IsServerSideWindow
 @ stdcall IsTouchWindow(long ptr)
+@ stdcall IsValidDpiAwarenessContext(long)
 @ stdcall IsWinEventHookInstalled(long)
 @ stdcall IsWindow(long)
 @ stdcall IsWindowEnabled(long)

include/windef.h

@@ -433,6 +433,20 @@ typedef struct _RECTL
 
 typedef const RECTL *LPCRECTL;
 
+/* DPI awareness */
+typedef enum DPI_AWARENESS
+{
+    DPI_AWARENESS_INVALID = -1,
+    DPI_AWARENESS_UNAWARE = 0,
+    DPI_AWARENESS_SYSTEM_AWARE,
+    DPI_AWARENESS_PER_MONITOR_AWARE
+} DPI_AWARENESS;
+
+#define DPI_AWARENESS_CONTEXT_UNAWARE              ((DPI_AWARENESS_CONTEXT)-1)
+#define DPI_AWARENESS_CONTEXT_SYSTEM_AWARE         ((DPI_AWARENESS_CONTEXT)-2)
+#define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE    ((DPI_AWARENESS_CONTEXT)-3)
+#define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 ((DPI_AWARENESS_CONTEXT)-4)
+
 #ifdef __cplusplus
 }
 #endif

include/winuser.h

@@ -3848,6 +3848,7 @@ WINUSERAPI BOOL        WINAPI IsIconic(HWND);
 WINUSERAPI BOOL        WINAPI IsMenu(HMENU);
 WINUSERAPI BOOL        WINAPI IsProcessDPIAware(void);
 WINUSERAPI BOOL        WINAPI IsTouchWindow(HWND,PULONG);
+WINUSERAPI BOOL        WINAPI IsValidDpiAwarenessContext(DPI_AWARENESS_CONTEXT);
 WINUSERAPI BOOL        WINAPI IsWinEventHookInstalled(DWORD);
 WINUSERAPI BOOL        WINAPI IsWindow(HWND);
 WINUSERAPI BOOL        WINAPI IsWindowEnabled(HWND);