ParamDialog. When a boolean param changes, I read its dependent_list
field to see which other parameters depend on it. Then, for any
dependents that are actually showing in the dialog, I set their
enable bit accordingly. This required addition of another hash table,
called paramHash. The two EnableChanged() methods implement this.
- remove all ConfigKeyboardDialog code because I can do just as well
using the generic ParamDialog.
- fix bug that caused occasional crashes. To attempt to find all the
choices in an a wxChoice control, I was calling GetClientData() on
increasing index until it returned NULL. The docs implied that this
was safe, but it's not. Eventually I found an apparantly undocumented
call wxChoice::GetCount() that gives the number of strings in the
choice box and it allows me to do the right thing.
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