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5c1813185a
Release 5.5.6 (https://www.scintilla.org/scintilla556.zip) Released 2 April 2025. * Disallow changing case of protected text. Bug #2463. * Return enumeration type from MarkerSymbolDefined to match MarkerDefine. Bug #2469. * On Win32, use DirectWrite for autocompletion lists when DirectWrite chosen for document text. * On Win32, optimize case-insensitive DBCS search to be around 5 times faster by using 64K memory to cache folding data for each DBCS code page used. * On Win32, fix a crash with bidirectional text. * When using Visual C++ through nmake, fix building for ARM64. Feature #1546. * On Qt, draw clipped UTF-8 text correctly. Bug #2464. * On Qt, avoid a dwell start when the mouse is moved outside the Scintilla widget. Bug #2466. * On Qt, autoCompleteSelection converts from local encoding when not in Unicode mode. Bug #2465. Release 5.4.4 (https://www.scintilla.org/lexilla544.zip) Released 2 April 2025. * Fix building for ARM64. Pull request #308. Close #16373
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
// Scintilla source code edit control
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/** @file WinTypes.h
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** Implement safe release of COM objects and access to functions in DLLs.
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** Header contains all implementation - there is no .cxx file.
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**/
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// Copyright 2020-2021 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#ifndef WINTYPES_H
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#define WINTYPES_H
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namespace Scintilla::Internal {
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// Release an IUnknown* and set to nullptr.
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// While IUnknown::Release must be noexcept, it isn't marked as such so produces
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// warnings which are avoided by the catch.
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template <class T>
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inline void ReleaseUnknown(T *&ppUnknown) noexcept {
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if (ppUnknown) {
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try {
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ppUnknown->Release();
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} catch (...) {
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// Never occurs
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}
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ppUnknown = nullptr;
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}
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}
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struct UnknownReleaser {
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// Called by unique_ptr to destroy/free the resource
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template <class T>
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void operator()(T *pUnknown) noexcept {
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try {
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pUnknown->Release();
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} catch (...) {
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// IUnknown::Release must not throw, ignore if it does.
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}
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}
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};
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/// Find a function in a DLL and convert to a function pointer.
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/// This avoids undefined and conditionally defined behaviour.
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template<typename T>
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inline T DLLFunction(HMODULE hModule, LPCSTR lpProcName) noexcept {
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if (!hModule) {
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return nullptr;
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}
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FARPROC function = ::GetProcAddress(hModule, lpProcName);
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static_assert(sizeof(T) == sizeof(function));
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T fp {};
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memcpy(&fp, &function, sizeof(T));
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return fp;
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}
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inline void ReleaseLibrary(HMODULE &hLib) noexcept {
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if (hLib) {
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FreeLibrary(hLib);
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hLib = {};
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}
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}
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}
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#endif
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