You probably want to call canvas_makefilename(), supplying the owning canvas, not a new one. YOu can get the owning canvas using canvas_getcurrent(), but only when the object is being created (the information is not kept so your object needs to keep it itself). For a simple example, search pd/extra/bink~/bonk~.c for x->x_canvas - it gets intialized in the new() methnd and used both to create and read files.
cheers Miller
On Sun, Jun 29, 2014 at 05:49:23PM -0500, Jaime E Oliver via Pd-list wrote:
Hi all,
Checking out canvas_open inside g_canvas.c, I realize that this is a function to open a file that already exists, while what I am trying to do is write a file with a path that is relative to the canvas. I couldn't find something similar, such as canvas_write or such.
thanks again!
J
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