dpi_utils.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "Windows.h"
 
#ifndef FLUTTER_SHELL_PLATFORM_WINDOWS_DPI_UTILS_H_
#define FLUTTER_SHELL_PLATFORM_WINDOWS_DPI_UTILS_H_
 
namespace flutter {
 
constexpr UINT kDefaultDpi = 96;
 
/// Returns the DPI for |hwnd|. Supports all DPI awareness modes, and is
/// backward compatible down to Windows Vista. If |hwnd| is nullptr, returns the
/// DPI for the primary monitor. If Per-Monitor DPI awareness is not available,
/// returns the system's DPI.
UINT GetDpiForHWND(HWND hwnd);
 
/// Returns the DPI of a given monitor. Defaults to 96 if the API is not
/// available.
UINT GetDpiForMonitor(HMONITOR monitor);
 
}  // namespace flutter
 
#endif  // FLUTTER_SHELL_PLATFORM_WINDOWS_DPI_UTILS_H_