Exterrata
42 lines
1.5 KiB
C#
42 lines
1.5 KiB
C#
using System.Runtime.InteropServices;
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using Avalonia.Controls;
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namespace CVRManager.Views;
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public static class WindowIcons
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{
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const uint WM_SETICON = 0x0080;
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const int ICON_SMALL = 0;
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const int ICON_BIG = 1;
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const int SM_CXICON = 11;
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const int SM_CXSMICON = 49;
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[DllImport("user32.dll", CharSet = CharSet.Unicode)]
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static extern uint PrivateExtractIcons(string file, int index, int cx, int cy, IntPtr[] icons, uint[] ids, uint count, uint flags);
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[DllImport("user32.dll")]
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static extern IntPtr SendMessage(IntPtr hwnd, uint msg, IntPtr wParam, IntPtr lParam);
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[DllImport("user32.dll")]
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static extern int GetSystemMetrics(int index);
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public static void Apply(Window window)
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{
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if (!OperatingSystem.IsWindows()) return;
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var exe = Environment.ProcessPath;
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var hwnd = window.TryGetPlatformHandle()?.Handle ?? IntPtr.Zero;
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if (exe == null || hwnd == IntPtr.Zero || !Path.GetFileName(exe).Equals("CVRManager.exe", StringComparison.OrdinalIgnoreCase)) return;
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Set(hwnd, exe, GetSystemMetrics(SM_CXSMICON), ICON_SMALL);
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Set(hwnd, exe, GetSystemMetrics(SM_CXICON), ICON_BIG);
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}
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static void Set(IntPtr hwnd, string exe, int size, int kind)
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{
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var handles = new IntPtr[1];
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var ids = new uint[1];
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if (PrivateExtractIcons(exe, 0, size, size, handles, ids, 1, 0) > 0 && handles[0] != IntPtr.Zero)
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SendMessage(hwnd, WM_SETICON, (IntPtr)kind, handles[0]);
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}
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}
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