What's New in FWH 26.09

Highlights of FiveWin for Harbour/xHarbour version 26.09 (September 2026). See also whatsnew.txt in the FWH root for the full day-by-day log.

Automatic dark title bar + FW_SetCaptionColors

With FW_SetDarkMode( .T. ) every WINDOW and DIALOG now gets a dark title bar automatically, using the dark mode colors: no extra code needed (source/classes/dialog.prg, source/classes/window.prg).

The new FW_SetCaptionColors() function customizes the caption (source/classes/dialog.prg): 

// Custom caption text/background colors (also in light mode)
FW_SetCaptionColors( nClrText, nClrBack )

// Back to the automatic colors
FW_SetCaptionColors( nil, nil )

// Query the custom colors: { nClrText, nClrBack } or nil
aClrs := FW_SetCaptionColors()

Caption theming uses the DWM (DwmSetWindowAttribute, with dwmapi.dll loaded at runtime, so there is no new dependency). It requires Windows 11; on older Windows it silently does nothing. See TDialog caption colors and TWindow dark mode.

TBitmap ASPECT: proportional scaling

New ASPECT option for @ ... BITMAP and REDEFINE BITMAP, and new lAspectRatio property (source/classes/bitmap.prg): the bitmap is drawn proportionally scaled and centered inside the control, without distortion, leaving the remaining area in the control background color. It takes precedence over ADJUST; zero dimensions draw nothing. You can also set oBmp:lAspectRatio := .T. and call oBmp:Refresh(). See TBitmap.

TScrollPanel: focus jump after horizontal scroll fixed

After a horizontal scroll, the bGotFocus handler that SetRange() assigns to tab-stop controls still called ControlIntoView(), yanking the panel back. It is now skipped after a horizontal scroll too (lHScrolled), as it already was after a vertical one (source/classes/scrlpanl.prg). No changes required in user code. See TScrollPanel.

TWebView2: from 10 to 40+ natives

TWebView2 (source/classes/twebview2.prg, source/internal/twebview/cwebview.cpp, source/winapi/webview2.c, include/WebView2.ch) grows from 10 to more than 40 natives. New methods: NavigateEx( cUrl, cMethod, cHeaders, cBody ) (native POST), GoBack/GoForward/Reload/Stop, CanGoBack/CanGoForward, GetSource, GetDocumentTitle, GetBrowserVersion, Print, SetZoomFactor/GetZoomFactor, SetDefaultScriptDialogs, SetDefaultContextMenus/SetContextMenuExclude, CapturePreview (async PNG) / PrintToPdf (async PDF), Add/RemoveWebResourceRequestedFilter, ClearSession/ClearBrowsingData, EnableConsole, CloseWebView, Reinitialize, SetSizeRatio and Diag/Reregister diagnostics. New bOn* events: NavigationStarting (cancelable), SourceChanged, HistoryChanged, DocumentTitleChanged, NewWindow, Permission (allow/deny), FullScreen, ProcessFailed, FrameNavStarting/Completed and Console. The default user data folder is %LOCALAPPDATA%\FWH_webview2_UserData. Fully backward compatible; new sample in samples/webview2/.

TProlog: a Prolog engine inside FiveWin

New class TProlog (source/classes/tprolog.prg): a Prolog engine embedded in Harbour/FiveWin, with facts and rules, backtracking, unification (optional occurs-check), cut (!), negation (not/\+), findall/3, arithmetic (is/2, =:=/2, ...) and fast native list builtins (member, append, permutation, numlist, alldiff, sort, between, ...). Query() returns an array of hashes { VarName => "term" }. The C core (source/function/prolog.c, trail + owned term heap) solves the 8-queens problem (all 92 solutions) about 230x faster than the previous Harbour interpreter. Samples: samples/ai/tprolog.prg, samples/ai/tprologbench.prg and samples/ai/plpad.prg, a Prolog pad with syntax highlighting, a 3D graph of the knowledge base and an "explain" button powered by TOpenCode.

MAPI: typed SMTP address fill

MAPISendMail() / DEFINE MAIL with a single-parameter TO cEmail: the 26.07 fallback copied the bare display name into lpszAddress (no type prefix), which made Outlook build a one-off recipient and Exchange Online never deliver the attachment. mapi.c now fills the typed form SMTP:user@domain, only when the name contains @. The new optional SetMapiAddrFill( .F. ) restores the pre-26.07 behaviour of leaving lpszAddress empty for the client to resolve. The dual form TO cName, cAddress is unchanged.

IsWindows10() fixed on Windows Server

IsWindows10() now reads the build number, the same way IsWindows11() does, instead of the registry product name, which says "Windows Server" on server editions: it wrongly returned .F. on Windows Server 2016/2019/2022.

xHarbour + BCC 64 (xb64): Fivexh64.a was missing everything in source/function/harbour.prg (ASend(), OSend(), OClone(), ParamCount(), OleInvoke() and more), so xHarbour 64-bit apps failed to link with errors like Unresolved external 'HB_FUN_ASEND'; TVistaMenu was missing too. Both are in now, and mfwh_new.bat xb64 lists any source that fails to compile and stops, instead of silently leaving it out of the lib.

The FiveWin libs also build again with MinGW 32 (source/internal/remoteview/capture.c defines SM_CXPADDEDBORDER when the SDK headers lack it), and FWMariaDB apps link with xHarbour + MSVC 32 (source/internal/fwmaria.prg uses its own nxs_crypt and Adler-32 there).

TOpenCode talks to OpenCode Zen again

TOpenCode (source/classes/topencode.prg) works with the Zen service again: the x-opencode-session: public header is sent (the old requests failed with MissingSessionID), the free-model catalog is up to date (ling-3.0-flash-fin-free default) and HTTP status falls back to the return value. See TOpenCode.

New samples

PrinterKeepSetup

New: PrinterKeepSetup( lOn ) keeps the printer chosen in PrinterSetup() or PageSetup() for the following print jobs (off by default, falls back silently to the default printer if the kept one is gone, PrinterResetSetup() forgets it). See TPrinter.