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Rationalisation of the system of frontend handles. Most modular bits

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of PuTTY (terminal, backend, logctx etc) take a `void *' handle
passed to them from the frontend, and used as a context for all
their callbacks. Most of these point at the frontend structure
itself (on platforms where this is meaningful), except that the
handle passed to the backend has always pointed at the terminal
because from_backend() was implemented in terminal.c. This has
finally bitten Unix PuTTY, because both backend and logctx have
been passing their respective and very different frontend handles to
logevent(), so I've fixed it.
from_backend() is now a function supplied by the _frontend_ itself,
in all cases, and the frontend handle passed to backends must be the
same as that passed to everything else. What was from_backend() in
terminal.c is now called term_data(), and the typical implementation
of from_backend() in a GUI frontend will just extract the terminal
handle from the frontend structure and delegate to that.
This appears to work on Unix and Windows, but has most likely broken
the Mac build.

[originally from svn r3100]
This commit is contained in:
Simon Tatham
2003-04-11 18:36:27 +00:00
parent 8e3c37d309
commit d93f7113d1
5 changed files with 29 additions and 29 deletions
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3
putty.h
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@ -543,6 +543,7 @@ void request_paste(void *frontend);
void frontend_keypress(void *frontend);
void ldisc_update(void *frontend, int echo, int edit);
void update_specials_menu(void *frontend);
int from_backend(void *frontend, int is_stderr, const char *data, int len);
#define OPTIMISE_IS_SCROLL 1
void set_iconic(void *frontend, int iconic);
@ -622,7 +623,7 @@ int term_ldisc(Terminal *, int option);
void term_copyall(Terminal *);
void term_reconfig(Terminal *, Config *);
void term_seen_key_event(Terminal *);
int from_backend(void *, int is_stderr, const char *data, int len);
int term_data(Terminal *, int is_stderr, const char *data, int len);
void term_provide_resize_fn(Terminal *term,
void (*resize_fn)(void *, int, int),
void *resize_ctx);