On Saturday 25 October 2003 17:23, you wrote:
> I don't think the problem is retrieving the value from g_list_nth_data.
> This is simple to check -- compare the value returned from
> g_list_nth_data against the value you put into the g_list.
That was because the data pointer was keeping the value of the previous
allocation. This new sample code shows that both the first call to
g_utf16_to_utf8 and memmove work OK, but either g_list_append or
g_list_nth_data aren't working.
This is unless I'm doing something stupid.
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using System;
using System.Runtime.InteropServices;
class testbug {
public const string GLIB_LIBRARY = "glib-2.0";
public const string STRLEN_LIBRARY = "pango-1.0";
public const string MEMMOVE_LIBRARY = "gtk-x11-2.0";
[DllImport(GLIB_LIBRARY, CharSet = CharSet.Unicode)]
public static extern IntPtr g_utf16_to_utf8(char[] str, int len, out int
items_read, out int items_written, IntPtr error);
[DllImport(GLIB_LIBRARY, CharSet = CharSet.Unicode)]
public static extern IntPtr g_utf8_to_utf16(byte[] str, int len, out int
items_read, out int items_written, IntPtr error);
[DllImport(STRLEN_LIBRARY, CharSet = CharSet.Unicode)]
public static extern int strlen(IntPtr str);
[DllImport(MEMMOVE_LIBRARY, CharSet = CharSet.Unicode)]
public static extern void memmove(IntPtr dest, byte[] src, int size);
[DllImport(MEMMOVE_LIBRARY, CharSet = CharSet.Unicode)]
public static extern void memmove([In, Out] byte[] dest, IntPtr src, int
size);
[DllImport(MEMMOVE_LIBRARY, CharSet = CharSet.Unicode)]
public static extern void memmove([In, Out] char[] dest, IntPtr src, int
size);
[DllImport(GLIB_LIBRARY, CharSet = CharSet.Unicode)]
public static extern void g_free(IntPtr mem);
[DllImport(GLIB_LIBRARY, CharSet = CharSet.Unicode)]
public static extern IntPtr g_malloc(int size);
[DllImport(GLIB_LIBRARY, CharSet = CharSet.Unicode)]
static extern void g_printf (IntPtr format);
[DllImport(GLIB_LIBRARY, CharSet = CharSet.Unicode)]
public static extern IntPtr g_list_append(IntPtr list, IntPtr data);
[DllImport(GLIB_LIBRARY, CharSet = CharSet.Unicode)]
public static extern IntPtr g_list_nth_data(IntPtr list, int n);
public static void Main ()
{
string str = "Let's i18n, baby...do it hard!";
IntPtr glist = IntPtr.Zero;
bool terminate = true;
char [] strchar = str.ToCharArray();
int read, written;
IntPtr ptr = g_utf16_to_utf8 (strchar, str.Length, out read, out written,
IntPtr.Zero);
if (read != strchar.Length) written++;
byte [] buffer = new byte [written + (terminate ? 1 : 0)];
memmove (buffer, ptr, written);
g_free (ptr);
string newl = "\n";
IntPtr data = g_malloc (buffer.Length);
memmove (data, buffer, buffer.Length);
g_printf (data);
g_printf (Marshal.StringToHGlobalAnsi (newl));
glist = g_list_append (glist, data);
g_free (data);
IntPtr data2 = g_list_nth_data (glist, 0);
g_printf (data2);
g_printf (Marshal.StringToHGlobalAnsi (newl));
int length = strlen (data2);
byte [] buffer1 = new byte [length];
memmove (buffer1, data2, length);
ptr = g_utf8_to_utf16 (buffer1, buffer1.Length, out read, out written,
IntPtr.Zero);
char [] chars = new char [written];
memmove (chars, ptr, written * 2);
Console.WriteLine (chars);
g_free (ptr);
}
}
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