public static T AEGetNthPtr <T> (ref AEDesc descList, int index, CarbonEventParameterType desiredType) where T : struct
{
int len = Marshal.SizeOf(typeof(T));
IntPtr bufferPtr = Marshal.AllocHGlobal(len);
try {
CheckReturn((int)AEGetNthPtr(ref descList, index, desiredType, 0, 0, bufferPtr, len, 0));
T val = (T)Marshal.PtrToStructure(bufferPtr, typeof(T));
return(val);
} finally{
Marshal.FreeHGlobal(bufferPtr);
}
}
public static List <string> GetUrlListFromEventRef(IntPtr eventRef)
{
AEDesc list = GetEventParameter <AEDesc> (eventRef, CarbonEventParameterName.DirectObject, CarbonEventParameterType.AEList);
long count = AECountItems(ref list);
var files = new List <string> ();
for (int i = 1; i <= count; i++)
{
string url = GetStringFromAEPtr(ref list, i);
if (!string.IsNullOrEmpty(url))
{
files.Add(url);
}
}
Carbon.CheckReturn(Carbon.AEDisposeDesc(ref list));
return(files);
}
public static List <string> GetFileListFromEventRef(IntPtr eventRef)
{
AEDesc list = GetEventParameter <AEDesc> (eventRef, CarbonEventParameterName.DirectObject, CarbonEventParameterType.AEList);
long count = AECountItems(ref list);
var files = new List <string> ();
for (int i = 1; i <= count; i++)
{
FSRef fsRef = AEGetNthPtr <FSRef> (ref list, i, CarbonEventParameterType.FSRef);
string file = FSRefToPath(ref fsRef);
if (!string.IsNullOrEmpty(file))
{
files.Add(file);
}
}
CheckReturn(AEDisposeDesc(ref list));
return(files);
}
//FIXME: this might not work in some encodings. need to test more.
static string GetStringFromAEPtr(ref AEDesc descList, int index)
{
int size;
CarbonEventParameterType type = CarbonEventParameterType.UnicodeText;
if (AESizeOfNthItem(ref descList, index, ref type, out size) == AEDescStatus.Ok)
{
IntPtr buffer = Marshal.AllocHGlobal(size);
try {
if (AEGetNthPtr(ref descList, index, type, 0, 0, buffer, size, 0) == AEDescStatus.Ok)
{
return(Marshal.PtrToStringAuto(buffer, size));
}
} finally {
Marshal.FreeHGlobal(buffer);
}
}
return(null);
}
public static extern AEDescStatus AESizeOfNthItem(ref AEDesc descList, int index, ref CarbonEventParameterType type, out int size);
public static extern int AEDisposeDesc(ref AEDesc desc);
static extern AEDescStatus AEGetNthPtr(ref AEDesc descList, int index, CarbonEventParameterType desiredType, uint keyword,
uint zero, out IntPtr outPtr, int bufferSize, int zero2);
static extern AEDescStatus AEGetNthPtr(ref AEDesc descList, int index, CarbonEventParameterType desiredType, uint keyword,
out CarbonEventParameterType actualType, IntPtr buffer, int bufferSize, out int actualSize);
static extern int AECountItems(ref AEDesc descList, out int count); //return an OSErr