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|  | 1 | +// Copyright (c) Files Community | 
|  | 2 | +// Licensed under the MIT License. | 
|  | 3 | + | 
|  | 4 | +using System.Runtime.InteropServices; | 
|  | 5 | +using Windows.Win32.Foundation; | 
|  | 6 | +using Windows.Win32.System.Com.StructuredStorage; | 
|  | 7 | +using Windows.Win32.System.Variant; | 
|  | 8 | +using Windows.Win32.UI.WindowsAndMessaging; | 
|  | 9 | + | 
|  | 10 | +namespace Windows.Win32 | 
|  | 11 | +{ | 
|  | 12 | +	public unsafe static partial class PInvoke | 
|  | 13 | +	{ | 
|  | 14 | +		public static HRESULT InitPropVariantFromString(char* psz, PROPVARIANT* ppropvar) | 
|  | 15 | +		{ | 
|  | 16 | +			HRESULT hr = psz != null ? HRESULT.S_OK : HRESULT.E_INVALIDARG; | 
|  | 17 | + | 
|  | 18 | +			if (SUCCEEDED(hr)) | 
|  | 19 | +			{ | 
|  | 20 | +				nuint byteCount = (nuint)((MemoryMarshal.CreateReadOnlySpanFromNullTerminated(psz).Length + 1) * 2); | 
|  | 21 | + | 
|  | 22 | +				((ppropvar)->Anonymous.Anonymous.Anonymous.pwszVal) = (char*)(PInvoke.CoTaskMemAlloc(byteCount)); | 
|  | 23 | +				hr = ((ppropvar)->Anonymous.Anonymous.Anonymous.pwszVal) != null ? HRESULT.S_OK : HRESULT.E_OUTOFMEMORY; | 
|  | 24 | +				if (SUCCEEDED(hr)) | 
|  | 25 | +				{ | 
|  | 26 | +					NativeMemory.Copy(psz, ((ppropvar)->Anonymous.Anonymous.Anonymous.pwszVal), unchecked(byteCount)); | 
|  | 27 | +					((ppropvar)->Anonymous.Anonymous.vt) = VARENUM.VT_LPWSTR; | 
|  | 28 | +				} | 
|  | 29 | +			} | 
|  | 30 | + | 
|  | 31 | +			if (FAILED(hr)) | 
|  | 32 | +			{ | 
|  | 33 | +				PInvoke.PropVariantInit(ppropvar); | 
|  | 34 | +			} | 
|  | 35 | + | 
|  | 36 | +			return hr; | 
|  | 37 | +		} | 
|  | 38 | + | 
|  | 39 | +		public static void PropVariantInit(PROPVARIANT* pvar) | 
|  | 40 | +		{ | 
|  | 41 | +			NativeMemory.Fill(pvar, (uint)(sizeof(PROPVARIANT)), 0); | 
|  | 42 | +		} | 
|  | 43 | + | 
|  | 44 | +		public static unsafe nint SetWindowLongPtr(HWND hWnd, WINDOW_LONG_PTR_INDEX nIndex, nint dwNewLong) | 
|  | 45 | +		{ | 
|  | 46 | +			// NOTE: | 
|  | 47 | +			//  Since CsWin32 generates SetWindowLong only on x86, and SetWindowLongPtr only on x64, | 
|  | 48 | +			//  we need to manually define both functions here. | 
|  | 49 | +			//  For more info, visit https://github.com/microsoft/CsWin32/issues/882 | 
|  | 50 | +			return sizeof(nint) is 4 | 
|  | 51 | +				? _SetWindowLong(hWnd, (int)nIndex, (int)dwNewLong) | 
|  | 52 | +				: _SetWindowLongPtr(hWnd, (int)nIndex, dwNewLong); | 
|  | 53 | + | 
|  | 54 | +			[DllImport("User32", EntryPoint = "SetWindowLongW", ExactSpelling = true)] | 
|  | 55 | +			static extern int _SetWindowLong(HWND hWnd, int nIndex, int dwNewLong); | 
|  | 56 | + | 
|  | 57 | +			[DllImport("User32", EntryPoint = "SetWindowLongPtrW", ExactSpelling = true)] | 
|  | 58 | +			static extern nint _SetWindowLongPtr(HWND hWnd, int nIndex, nint dwNewLong); | 
|  | 59 | +		} | 
|  | 60 | + | 
|  | 61 | +		[LibraryImport("Shell32.dll", EntryPoint = "SHUpdateRecycleBinIcon")] | 
|  | 62 | +		public static partial void SHUpdateRecycleBinIcon(); | 
|  | 63 | +	} | 
|  | 64 | +} | 
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