SystemTrayMenu/Utilities/Scaling.cs

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// <copyright file="Scaling.cs" company="PlaceholderCompany">
// Copyright (c) PlaceholderCompany. All rights reserved.
// </copyright>
namespace SystemTrayMenu.Utilities
{
using System;
using System.Drawing;
internal static class Scaling
{
internal static float Factor = 1;
private enum DeviceCap
{
VERTRES = 10,
DESKTOPVERTRES = 117,
}
internal static void Initialize()
{
CalculateScalingFactor();
SetProcessDPIAwareWhenNecessary();
static void SetProcessDPIAwareWhenNecessary()
{
if (Environment.OSVersion.Version.Major >= 6)
{
DllImports.NativeMethods.User32SetProcessDPIAware();
}
}
}
private static void CalculateScalingFactor()
{
Graphics g = Graphics.FromHwnd(IntPtr.Zero);
IntPtr desktop = g.GetHdc();
int LogicalScreenHeight = DllImports.NativeMethods.Gdi32GetDeviceCaps(
desktop, (int)DeviceCap.VERTRES);
int PhysicalScreenHeight = DllImports.NativeMethods.Gdi32GetDeviceCaps(
desktop, (int)DeviceCap.DESKTOPVERTRES);
Factor = PhysicalScreenHeight / (float)LogicalScreenHeight;
}
}
}