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2022-07-23Improve UpdateLayout and ResizeColumns.John Ankarström
This incidentally removes the need for the variable template introduced by 21e96c6. I'm sure it will be needed at some point, though.
2022-07-22Cache GetSystemMetrics values with variable template.John Ankarström
The variable template could be generalized like this: template <auto F, auto... A> const auto cache = F(A...); and instantiated like: cache<GetSystemMetrics, SM_CXVSCROLL> It would still be limited to constant function arguments, which usually isn't a problem for GetSystemMetrics, but might be for other functions.
2022-07-20Simplify UpdateLayout.John Ankarström
2022-07-20Fix ANSI compatibility.John Ankarström
It's not very useful, but it's a fun exercise.
2022-07-19Use static member function instead of friend function.John Ankarström
2022-07-19Fix Prolog memory leaks.John Ankarström
Apparently foreign frames ARE needed when calling Prolog from C. The official documentation is very terse and could make this clearer. To summarize, whenever a term is created (e.g., PL_new_term_refs), its reference count is increased by one. It is garbage-collected when its reference count hits zero. But the reference count is never decreased unless (a) control returns to Prolog after executing a foreign predicate -- which does not happen in my application -- or (b) the foreign frame in which the term was created is closed. In other words, terms must be created within a foreign frame. This is achieved by initializing a Frame object before creating the term and destroying it once the term has served its purpose. The destructor for Frame does not DISCARD the frame, only CLOSE it. The former would also invalidate all data bound by the terms, which is usually undesirable.
2022-07-17Make ListView hWnd public.John Ankarström
A getter offers encapsulation, but it is also less transparent in a sense. Thinking of ListView as a struct, it is natural to expose hWnd as a public member variable.
2022-07-17Update type names and variable prefixes.John Ankarström
2022-07-17Add const to pointers, update spacing.John Ankarström
It seems that "right-spaced" pointers are more widely used among C++ programmers.
2022-07-17Add const to places.John Ankarström
Note that I did NOT add const to non-pointer/non-reference arguments in function declarations (without a following definition), as they do not mean anything there.
2022-07-17Use SWI-Prolog's wide-character functions.John Ankarström
This avoids the use of TsmFromSz.
2022-07-16Formatting.John Ankarström
2022-07-16Rewrite TszFromSz as TsmFromSz.John Ankarström
I.e. using std::basic_string<TCHAR> instead of TCHAR *. This removes all unmanaged frees.
2022-07-16Add m_hWndParent to ListView.John Ankarström
This avoids g_hWnd.
2022-07-15Split defs.h into separate header files.John Ankarström
This is feasible now that the makedeps script exists to automatically manage build dependencies (see 6034fe2, d00f8b3).
2022-07-15Reimplement Pl with variadic templatesJohn Ankarström
This is a bit safer and about as complex.
2022-07-15Change declaration style.John Ankarström
2022-07-14Initialize global variables in the right place.John Ankarström
The rules for what messages are sent at window creation -- and in which order -- are neither intuitive or clear. WM_CREATE can NOT be relied upon to initialize global state required by handlers of other messages (such as WM_GETMINMAXINFO, which seems to be sent before WM_CREATE). Thus, the better solution is to initialize everything using a CBT hook before the window procedure is even run. Because CBTProc creates (child): windows of its own, though, one must be careful to only run the initialization once, which is done by checking g_hWnd.
2022-07-11Improve ElvSort.John Ankarström
2022-07-10Convert to C++.John Ankarström
I already hit upon some object-oriented programming patterns in *listview.c, so I felt that it would be natural to use this as an opportunity to learn C++.