59 lines
1.5 KiB
C#
59 lines
1.5 KiB
C#
|
using System;
|
||
|
|
using System.Runtime.InteropServices;
|
||
|
|
|
||
|
|
namespace PCL.Core.Utils.WinRT;
|
||
|
|
|
||
|
|
public class HStringHelper
|
||
|
|
{
|
||
|
|
public static unsafe HString ToHString(string? value)
|
||
|
|
{
|
||
|
|
if (value is null)
|
||
|
|
{
|
||
|
|
return new HString(IntPtr.Zero);
|
||
|
|
}
|
||
|
|
|
||
|
|
IntPtr handle;
|
||
|
|
fixed (char* lpValue = value)
|
||
|
|
{
|
||
|
|
Marshal.ThrowExceptionForHR(
|
||
|
|
WinRTInterop.WindowsCreateString((ushort*)lpValue, value.Length, &handle));
|
||
|
|
}
|
||
|
|
|
||
|
|
return new HString(handle);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static unsafe string ToManagedString(HString value)
|
||
|
|
{
|
||
|
|
if (value == IntPtr.Zero)
|
||
|
|
return "";
|
||
|
|
uint length;
|
||
|
|
var buffer = WinRTInterop.WindowsGetStringRawBuffer(value, &length);
|
||
|
|
return length != 0 ? new string(buffer, 0, (int)length) : string.Empty;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void DeleteHString(HString value)
|
||
|
|
{
|
||
|
|
if (!value.IsNull)
|
||
|
|
WinRTInterop.WindowsDeleteString(value);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static unsafe void WithReference(
|
||
|
|
ReadOnlySpan<char> value,
|
||
|
|
Action<HString> action)
|
||
|
|
{
|
||
|
|
fixed (char* p = value)
|
||
|
|
{
|
||
|
|
WinRTInterop.HStringHeader header;
|
||
|
|
IntPtr hstring;
|
||
|
|
|
||
|
|
Marshal.ThrowExceptionForHR(
|
||
|
|
WinRTInterop.WindowsCreateStringReference(
|
||
|
|
(ushort*)p,
|
||
|
|
value.Length,
|
||
|
|
(IntPtr*)&header,
|
||
|
|
&hstring));
|
||
|
|
|
||
|
|
action((HString)hstring);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|