如何设计主要运行tcl脚本的C ++ GUI应用程序

Question

I am looking for a good approach to build a C++ GUI application. Its core is generating whole bunch of tcl code and execute it through Tcl C++ API ( #include <tcl.h> ). The GUI provides an easy way for users to complete those tcl scripting tasks.

In other words, inside each callback function associated with the GUI control, it's like using ostringstream to populate tcl code and passes it to tcl interpreter. Eg:

bool execTclProc1(options) {
  ostringstream oss;
  oss << "package require MyPackage \n";
  string optionsForTcl = genOptionsForTcl(options);
  oss << "myTclProc1 " << optionsForTcl << endl;

  if(Tcl_Eval(interp, oss.c_str() == TCL_OK) {
    // print out some messages to the GUI message window
  }

  ...
}

The down side of this design:

• Hard to debug tcl code error. Since every change in tcl code needs to re-compile the C code. Although a fast way is to write and test tcl code in tcl interactive shell. But a lot of tcl code is populated in C++, not hard-coded. So it's not so feasible.

• Whole bunch of tcl code is written in C++ routines. This makes it hard to maintain.

I want to seek some insights from the community.

Answer 1

Can't you use the Tk toolkit called as library functions from C++?

Also, there is Tk/C++ - don't know how good it is. They overloaded operator- and use expression templates so that the C++ code like like Tcl. Pretty cool!