SGM_Clear

Set drawing area to current pen color.

This method clears the entire sketchboard to the current pen color.

Since V47 it clears the selection if there is one. Old applications that don't activate the select tool will not see a difference.

obj

sketchboard object pointer

msg

pointer to fully initialized struct spGeneral with the MethodID set to SGM_Clear (see gadgets/sketchboard.h)

Returns 1 if changes were rendered or 0 if not.

intuition.library/DoGadgetMethodA()