Hi all,
I need help debugging this little code snippet.
/*global*/ DmOpenRef dbToUse;
void static MyFunction();
MemHandle recordH;
Char *recText;
{
recordH = DmGetRecord(dbToUse, indexToGet);
if (recordH == NULL)
ErrDisplay("Can retrieve record");
recText = (Char*)MemHandleLock(recordH);
}
dbToUse has been opened by
DmOpenDatabaseByTypeCreator(MenuProtoUserDBType, CreatorID, mode);
elsewhere. I'm pretty sure the dbToUse is opened for reading, I've even
checked it with
error = DmOpenDatabaseInfo(dbToUse, &dbID, &openCount, &mode, &cardNo,
&resDB);
ErrFatalDisplayIf(error, "Database not opened");
The problem is whenever I try to lock recordH with
MemHandleLock(recordH); I get "MemoryMgrNew.c, Line:4177, Free handle"
on the log window.
recText would then point to some invalid address space.
Is a free handle an invalid handle? A freed handle? Doesn't
DmGetRecord() return a handle? Or do I have to explicitly use a
recordH=MemHandleNew(x)? But I wouldn't know how much memory to assign
for DmGetRecord.
Any help would be greatly appreciated. Thanks!!
Wee Meng CHONG
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