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52 lines
2.1 KiB
C++
52 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_MOZGLUE_MISC_WINDOWSDPIINITIALIZATION_H_
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#define MOZILLA_MOZGLUE_MISC_WINDOWSDPIINITIALIZATION_H_
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#include "mozilla/Types.h"
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namespace mozilla {
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// The result codes that may be returned from WindowsDpiInitialization()
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enum class WindowsDpiInitializationResult : uint32_t {
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Success,
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FindSetProcessDpiAwarenessContextFailed,
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SetProcessDpiAwarenessContextFailed,
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FindSetProcessDpiAwarenessFailed,
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SetProcessDpiAwarenessFailed,
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};
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// Get a string representation of any WindowsDpiInitializationResult value
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inline const char* WindowsDpiInitializationResultString(
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WindowsDpiInitializationResult result) {
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switch (result) {
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case WindowsDpiInitializationResult::Success:
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return "Success";
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case WindowsDpiInitializationResult::
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FindSetProcessDpiAwarenessContextFailed:
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return "Failed to find SetProcessDpiAwarenessContext";
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case WindowsDpiInitializationResult::SetProcessDpiAwarenessContextFailed:
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return "SetProcessDpiAwarenessContext failed";
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case WindowsDpiInitializationResult::FindSetProcessDpiAwarenessFailed:
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return "Failed to find SetProcessDpiAwareness";
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case WindowsDpiInitializationResult::SetProcessDpiAwarenessFailed:
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return "SetProcessDpiAwareness failed";
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default:
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return "Unknown result";
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}
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}
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// Initialize DPI awareness to the best available for the current OS
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// According to MSDN, this will be:
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// Per-Monitor V2 for Windows 10 Creators Update (1703) and later
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// Per-Monitor V1 for Windows 8.1 and later
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// System DPI for Vista and later (we don't support anything older)
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// https://docs.microsoft.com/en-us/windows/win32/hidpi/high-dpi-desktop-application-development-on-windows
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MFBT_API WindowsDpiInitializationResult WindowsDpiInitialization();
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} // namespace mozilla
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#endif // MOZILLA_MOZGLUE_MISC_WINDOWSDPIINITIALIZATION_H_
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