public static void Can_call_lpwstr_extern_function()
{
var buffer = Pointer.Create <LPWSTR>(Marshal.AllocCoTaskMem(2 * MAX_PATH));
try
{
var length = GetSystemDirectoryW(buffer, MAX_PATH);
if (length == 0)
{
throw Marshal.GetExceptionForHR(Marshal.GetLastWin32Error());
}
var path = UnicodeStringPointer.MarshalToString(buffer, length);
Assert.NotNull(path);
}
finally
{
Marshal.FreeCoTaskMem(buffer.Pointer);
}
}
public static void Can_call_lpwstr_extern_function(COMPUTER_NAME_FORMAT nameType)
{
int length = 255;
var buffer = Pointer.Create <LPWSTR>(Marshal.AllocCoTaskMem(2 * length));
try
{
bool successful = GetComputerNameExW(nameType, buffer, ref length);
if (!successful)
{
throw Marshal.GetExceptionForHR(Marshal.GetLastWin32Error());
}
var path = UnicodeStringPointer.MarshalToString(buffer, length);
Assert.NotNull(path);
}
finally
{
Marshal.FreeCoTaskMem(buffer.Pointer);
}
}