On 2/13/07, Ryan Pusztai <[EMAIL PROTECTED]> wrote:
> > Interface file:
> > %class %delete %noclassinfo %encapsulate wxSerialPort, wxSerialPort_x
> > wxSerialPort()
> >
> > // Serial port initilization
> > ...
> > int Open(const char* devname, void* dcs)
> > ...
> > %endclass
> >
> > Generated function:
> >
> > static int LUACALL wxLua_wxSerialPort_Open(lua_State *L)
> > {
> > wxLuaState wxlState(L);
> > int returns;
> > // void dcs
> > void * dcs = (void *)wxlState.ttouserdata(3);
> > // const char devname
> > const char * devname = (const char *)wxlState.ttouserdata(2);
> > // get this
> > wxSerialPort * self = (wxSerialPort *)wxlState.GetUserDataType(1,
> > s_wxluatag_wxSerialPort);
> > // call Open
> > returns = self->Open(devname, dcs);
> > // push the result number
> > lua_pushnumber(L, returns);
> >
> > return 1;
> > }
> >
> > Using it in wxLua:
> >
> > -- device control struct for additional (and device specific
> > -- settings)
> > dcs = wxctb.wxSerialPort_DCS()
> >
> > -- dcs was initiate with 19200 1N8, but you can change
> > -- these with your own settings
> > dcs:SetBaud( baudrate )
> > dcs:SetWordLen( 8 )
> > dcs:SetParity( wxctb.wxPARITY_NONE )
> > dcs:SetStopBits( 1 )
> >
> > -- Create the wxSerialPort variable.
> > com = wxctb.wxSerialPort()
> >
> > -- try to open the given comport
> > if ( com:Open( devname, dcs ) < 0 ) then -- <- this call fails everytime
> > -- port is not available (wrong or in use)
> > print( "An error occurred when opening serial port \""..devname.."\"" )
> > return 1
> > end
> >
> > It keeps failing. I can call other functions that I have wrapped, but
> > the reference to a class doesn't seem to work well for me,
>
> Jon and all,
> Any ideas on this? I am stuck till I can figure this out.
There's two problems, the first is that dcs is a "void*" data which
genwxbind.lua is treating as the userdata pointer which is not the
data itself. Is wxSerialPort_DCS a struct? Maybe you should replace
the binding line with
int Open(const char* devname, wxSerialPort_DCS* dcs)
or override the generated binding with
void * dcs = (void *)wxlState.GetUserDataType(3, s_wxluatag_wxSerialPort_DCS);
secondly, "const char*" is not correctly interpreted in genwxbind.lua
(fixed in cvs) the binding line should be
const char * devname = (const char *)wxlState.GetStringType(2);
hope this helps.
John Labenski
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