Posted to tcl by suchenwi at Wed Oct 03 19:04:11 GMT 2007view pretty

 critcl::cproc myincr {Tcl_Interp* interp char* varname} int {
    Tcl_Obj* var = Tcl_GetVar2Ex(interp,varname, NULL, 0);
    int i, rc;
    if(var == NULL) return -1;
    if(Tcl_IsShared(var)) {
        var = Tcl_DuplicateObj(var);
    }
    rc = Tcl_GetIntFromObj(interp, var, &i);
    Tcl_SetIntObj(var, i+1);
    Tcl_SetVar2Ex(interp, varname, NULL, var, 0);
    return i+1;    
 }