Trying to use unregistered class

[pascalc]

Hi,

In my panel I have an array of MemoryBlocks.

I am trying to loop over these and append them all to a file:

for i, data in ipairs(splitData) do
  if f:appendData(data:getData(), data:getSize()) == false then
    utils.warnWindow ("File write", "Sorry, the Editor failed to\nwrite the data to file!")
  end
end

The data:getData() functions fail though:

Name: getData
Error message: std::runtime_error: 'Trying to use unregistered class'

I see that someone else on this forum had the same issue: http://ctrlr.org/forums/topic/simple-akai-s2000-frontend/page/2/

I’m really a newbie when it comes to Lua but what I grasp from this SO: http://stackoverflow.com/questions/12031366/luabind-trying-to-use-unregistered-class-on-return it could be something in the Ctrlr MemoryBlock class and LuaBind.

I looked in the Ctrlr source code and the getData() function is commented out in LMemoryBlock.h. Could this be a potential problem?

Any help is much appreciated!

BR
/Pascal

[atom]

what’s the type of splitData (is it a lua table of MemoryBlocks ?) you can always try to see what type “data” is just use what(data) or the built in debugger (that’s what it’s for)

[pascalc]

Thanks,

This is the output of the program when I add the line you suggested right after the for line, before the if statement:

LUA>> Object type [MemoryBlock]
-----------------------------------------------------------------

Members:
	                       getData:	function
	                   setBitRange:	function
	                       getByte:	function
	             loadFromHexString:	function
	                   toHexString:	function
	               insertIntoTable:	function
	                       setSize:	function
	                      fillWith:	function
	                        insert:	function
	                       setByte:	function
	                       getSize:	function
	                      getRange:	function
	                 removeSection:	function
	               createFromTable:	function
	                      swapWith:	function
	                    ensureSize:	function
	                   getBitRange:	function
	                        copyTo:	function
	                   replaceWith:	function
	                        __init:	function
	                      copyFrom:	function
	                      toString:	function
	                        append:	function
	            fromBase64Encoding:	function
	              toBase64Encoding:	function
	                    toLuaTable:	function

Attributes:

-----------------------------------------------------------------
LUA>> Object type [MemoryBlock]
-----------------------------------------------------------------

Members:
	                       getData:	function
	                   setBitRange:	function
	                       getByte:	function
	             loadFromHexString:	function
	                   toHexString:	function
	               insertIntoTable:	function
	                       setSize:	function
	                      fillWith:	function
	                        insert:	function
	                       setByte:	function
	                       getSize:	function
	                      getRange:	function
	                 removeSection:	function
	               createFromTable:	function
	                      swapWith:	function
	                    ensureSize:	function
	                   getBitRange:	function
	                        copyTo:	function
	                   replaceWith:	function
	                        __init:	function
	                      copyFrom:	function
	                      toString:	function
	                        append:	function
	            fromBase64Encoding:	function
	              toBase64Encoding:	function
	                    toLuaTable:	function

Attributes:

-----------------------------------------------------------------

At line [-1]: [C]
What: C
Namewhat: method
Name: getData
Error message: std::runtime_error: 'Trying to use unregistered class'

The weird thing is that I get two printouts (there are a lot more elements in the table)

[atom]

appendData should be taking MemoryBlock as a parameter not pointers, i need to fix that and i’ll post a fix asap

[Author]

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