can not get focused control

[paule32]

Note: This Question comes from conversation from me (paule32, and magiblot 1)
Q: paule32:
how can I get the focused control/window ?
I have a global F2-key (StatusLine), but when I try to handle the F2 in
a HandleEvent member of the class, I get only the message from global F2
instead the F2 message from the derivated class.
The derivated class is TFileEditor.

A: magiblot 1
Keyboard shortcuts in the status line have the highest precedence: they are always handled by the status line instead of the currently focused view.

In these cases, Turbo Vision expects you to use help contexts. Help contexts allow you to change the status line contents when a specific view is focused.

If I recall correctly, to use help contexts you must:

1. Define a help context constant in the range 1000..65280 (since 0..999 and 0xFF00..0xFFFF are reserved by Turbo Vision)

   const ushort hcMyEditor = 1000;

2. Initialize the 'helpCtx' field of your view with that value:

   MyEditor::MyEditor()
   {
       // ...
       helpCtx = hcMyEditor;
   }

3. Add a status line definition for that help context, as in https://github.com/magiblot/tvterm/blob/87a46c4b637492b6e2e902c8c9b02d3402bdcf40/source/tvterm/app.cc#L83 or

   tvision/examples/tvdemo/tvdemo1.cpp

   Line 178 in 80bcde6

   TStatusLine *TVDemo::initStatusLine( TRect r )

I hope this helps.