[PD-dev] passing symbol arguments to a method
Ben Bogart - FMPM/F1999
bbogart at acs.ryerson.ca
Tue Jul 2 17:38:13 CEST 2002
Hello all,
I'm trying to build a PD method for this SDL function:
SDL_Surface *IMG_Load(const char *file);
problem is I can't figure out how to pass the symbol argument as a
filename which IMG_Load expects. Here is my current method:
void load_images(mystruct *x, t_symbol* image1_src, t_symbol* image2_src)
{
/* Symbol pointer stuff */
image1 = IMG_Load( (char *) image1_src );
if (image1_src == NULL) { post("Image 1 could not be opened"); }
image2 = IMG_Load( (char *) image2_src );
if (image2_src == NULL) { post("Image 2 could not be opened"); }
SDL_Flip(screen);
}
Which results in a segfault. I tried it without typecasting but gcc just
complains that its the wrong pointer type.
class_addmethod(myclass,
(t_method)load_images,
gensym("open"),
A_DEFSYM,
A_DEFSYM,
0);
I also tried using argv and atom_getsymbol() with the same pointer-type
porblem.
What am I doing wrong?
Thanks
Ben
B. Bogart
---------
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