This is a more hackish but more compatible solution to the problem of
data sent using wxIPC_UTF8TEXT format being simply lost when using DDE
for IPC classes. We must use CF_TEXT for the DDE to pass our data, but
we can try to decode it as UTF-8 in the client and assume it was sent in
this format if it worked. This obviously suffers from false positives as
any ASCII string will still be assumed to be UTF-8, but there shouldn't
be any real harm coming from this.
This change also makes sending data in wxIPC_UTF{16,32}TEXT formats work
as well by converting it to UTF-8.
Update the sample to call Advise() with both wxIPC_UTF{8,16}TEXT formats
and remove the now unnecessary wxDDEConnection::m_dataType member.
Closes#17900.
This reverts commit c657fd3d61 because
changing the format of DDE advise requests/replies is not a good idea:
other applications (those using previous versions of wxWidgets or even
not using wxWidgets at all) may rely on getting data in real CF_TEXT
format rather than in one of text formats preceded by the extra byte
containing the actual format and the previous commit would have silently
broken this.
Another fix for #17900 will be implemented instead.
wxIPC API doesn't map well onto DDE, as we don't have wxIPCFormat
parameter in StartAdvise() but do allow specifying the format when
calling Advise() itself, whereas DDE requires specifying the format when
establishing the advise loop and the data always must use this format
later.
Because of this, we have to pass the actual format with the data itself
instead of relying on DDE formats support. This has the advantage of
allowing wxIPC_UTF8TEXT to work, while previously it didn't and
couldn't, as DDE only supports the standard (or custom, but registered)
clipboard formats and it wasn't one of them. Of course, this also has a
disadvantage of having to make another copy of the data, but this seems
unavoidable.
This change allow Advise() overload taking wxString to work, including
for non-ASCII strings, as shown by the update to the IPC sample. It also
makes wxDDEConnection::m_dataType unnecessary, as we must always use the
format passed to DDE callback anyhow when handling XTYP_ADVREQ.
Closes#17900.
DDE code translates wxIPC_PRIVATE to wxIPC_TEXT internally since a
change done in 9d86099269, but same commit
also added a warning to the ipc sample stating that wxIPC_PRIVATE
doesn't work, which isn't really the case.
Remove the warning to avoid the confusion.
See #7470.
Remove alignment flags that result in asserts because of being used in
combinations that don't make sense.
Also use wxSizerFlags in the lines that were changed.
This keyword is not expanded by Git which means it's not replaced with the
correct revision value in the releases made using git-based scripts and it's
confusing to have lines with unexpanded "$Id$" in the released files. As
expanding them with Git is not that simple (it could be done with git archive
and export-subst attribute) and there are not many benefits in having them in
the first place, just remove all these lines.
If nothing else, this will make an eventual transition to Git simpler.
Closes#14487.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add a special symbol which is defined only if the icons and other images (e.g.
cursor) are in the separate resource files and don't need to be embedded as
XPMs in the main program.
This makes the checks more clear and more customizable as it's enough to
change wxHAS_IMAGES_IN_RESOURCES definition instead of changing many platform
checks.
Closes#14050.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70789 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Use wxDELETE[A]() functions which automatically NULL out their arguments after
deleting them instead of doing it manually.
Closes#9685.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64656 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
By Michael Fielding
As discussed on wx-dev. some fixes and improvements for Interprocess Communication (IPC), using DDE and TCP.
1. DDE buffers were using a global buffer
2. TCP buffers were allocated each time needed, and Request would have caused memory leaks had it been used.
Fixed these both by using a self-resizing buffer in wxConnectionBase. Changed samples and docs to reflect the improved (but backward compatible) internal buffer management. wxConnectionBase could (in future) use wxMemoryBuffer.
3. IPC sample had trouble closing, causing crash, when closing server using window X button.
Because it was (effectively) trying to delete a window in OnExit, when that window was already destroyed. Fixed by making IPCDialog and MyConnection remember if they'd destroyed each other. It's not elegant, but either the connection or the window could be deleted first.
4. Docs for wxDDE... and wxTCP... duplicated eachother, supposed to have same API. Some parts unclear.
Patch removes dde and tcp-specific files (including from tipc.tex and classes.tex), and explains how ipc.h selects for you which one to use based on platform. Some other misc clarifications.
6. Client sample was suffering apparent memory leak because of not deleting connection object, and had a hack in there to do that.
In fact this was due to the derived OnDisconnect not deleting itself, as it does in base class. Mentioned need to do it in docs, fixed sample so that it does.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16907 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
- Test 3 added to test large transfers involving multiple low level calls.
- Stub for datagram socket tests (not yet in place)
IPC sample:
- Client no longer needs to use GetHostName for DDE and LocalHost for IPC;
now it can just use GetHostName for both (because now the IPC server binds to
INADDR_ANY instead of binding to localhost).
- Fixed once again another warning about wxString objects that can't be
passed through '...'
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5563 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
