hartkopf@spot.Colorado.EDU (Jeff Hartkopf) (03/18/91)
I have a few questions about generating and using code resources on the IIGS. 1) How do I generate a code resource of, say, some C code? Do I have to use the tools sold by APDA, or can it be done with Genesys (or some other way)? 2) Once I have the code resource, how do I load it from my program, and then call it? Can it be called from C? If not, what assembly code do I need to call it? Is it possible to create a code resource with several functions that can be called from C, or do code resources only have one entry point? Thanks much for any help. Jeff Hartkopf University of Colorado at Boulder Internet: hartkopf@spot.colorado.edu
JWANKERL@UTCVM.BITNET ("Josef W. Wankerl") (03/18/91)
On Sun, 17 Mar 91 20:44:38 GMT Jeff Hartkopf said: >I have a few questions about generating and using code resources on the IIGS. > >1) How do I generate a code resource of, say, some C code? Do I have to use > the tools sold by APDA, or can it be done with Genesys (or some other way)? It really helps to use Rez, but Genesys can do it as well. Simply create your object code and then Import it (you can do this with 1.2). >2) Once I have the code resource, how do I load it from my program, and then > call it? Can it be called from C? If not, what assembly code do I need > to call it? Is it possible to create a code resource with several > functions that can be called from C, or do code resources only have one > entry point? You load is just as you would any other - with the LoadResource call. You have to set up a resource converter for it, however. It's easy to do - just make the GetCodeConverter miscellaneous tool call (I think that's what it's called) and then install it as an application converter for your code resource type. Yes, it can be called from C... The LoadResource gives you a handle, you convert it to a pointer and then make your JSL equivalent. Yes, you can create a code resource with multiple functions, but there is only one entry - the first function should be an information function which returns pointers to all the different routines in the code resource, or it could possibly call the routines itself based on a number for which routine you want to call. >Jeff Hartkopf >University of Colorado at Boulder >Internet: hartkopf@spot.colorado.edu -- ===> Josef W. Wankerl, Technical Editor for GS+ Magazine BITNET: JWANKERL@UTCVM.BITNET | America Online: JWankerl ProLine: jwankerl@pro-gsplus |-------------------------------- Internet: jwankerl@pro-gsplus.cts.com | "I am a Viking" -Y. Malmsteen