mozglue/misc/WindowsDpiAwareness.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef WindowsDpiAwareness_h_
   8 #define WindowsDpiAwareness_h_
   9
  10 #include <windows.h>
  11
  12 #if !defined(DPI_AWARENESS_CONTEXT_DECLARED) && \
  13     !defined(DPI_AWARENESS_CONTEXT_UNAWARE)
  14
  15 DECLARE_HANDLE(DPI_AWARENESS_CONTEXT);
  16
  17 typedef enum DPI_AWARENESS {
  18   DPI_AWARENESS_INVALID = -1,
  19   DPI_AWARENESS_UNAWARE = 0,
  20   DPI_AWARENESS_SYSTEM_AWARE = 1,
  21   DPI_AWARENESS_PER_MONITOR_AWARE = 2
  22 } DPI_AWARENESS;
  23
  24 #  define DPI_AWARENESS_CONTEXT_UNAWARE ((DPI_AWARENESS_CONTEXT)-1)
  25 #  define DPI_AWARENESS_CONTEXT_SYSTEM_AWARE ((DPI_AWARENESS_CONTEXT)-2)
  26 #  define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE ((DPI_AWARENESS_CONTEXT)-3)
  27
  28 #  define DPI_AWARENESS_CONTEXT_DECLARED
  29 #endif  // (DPI_AWARENESS_CONTEXT_DECLARED)
  30
  31 typedef DPI_AWARENESS_CONTEXT(WINAPI* SetThreadDpiAwarenessContextProc)(
  32     DPI_AWARENESS_CONTEXT);
  33 typedef BOOL(WINAPI* EnableNonClientDpiScalingProc)(HWND);
  34 typedef int(WINAPI* GetSystemMetricsForDpiProc)(int, UINT);
  35
  36 #endif