Merge #13734: gui: Drop boost::scoped_array and use wchar_t API explicitly on Windows

bb6ca65f9890e8280ace32de5a37774e14705859 gui: get special folder in unicode (Chun Kuan Lee)
1c5d22585384c8bb05a27a04eab5c57b31d623fb Drop boost::scoped_array (Chun Kuan Lee)

Pull request description:

  Drop boost::scoped_array and simplify the code.

  `TCHAR` should be defined as `wchar_t` if `UNICODE` is defined. So we can use `.toStdWString().c_str()` to get wchar_t C-style string.

  Fix #13819

Tree-SHA512: 3fd4aa784129c9d1576b01e6ee27faa42d793e152d132f2dde504d917dad3a8e95e065fcbc54a3895d74fb6b2a9ed4f5ec67d893395552f585e225486a84a454

2 files changed, 10 insertions, 27 deletions

diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
index bbf60d96fd..7afe25d25a 100644
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -38,8 +38,6 @@
 #include <shlwapi.h>
 #endif
 
-#include <boost/scoped_array.hpp>
-
 #include <QAbstractItemView>
 #include <QApplication>
 #include <QClipboard>
@@ -548,40 +546,28 @@ bool SetStartOnSystemStartup(bool fAutoStart)
         CoInitialize(nullptr);
 
         // Get a pointer to the IShellLink interface.
-        IShellLink* psl = nullptr;
+        IShellLinkW* psl = nullptr;
         HRESULT hres = CoCreateInstance(CLSID_ShellLink, nullptr,
-            CLSCTX_INPROC_SERVER, IID_IShellLink,
+            CLSCTX_INPROC_SERVER, IID_IShellLinkW,
             reinterpret_cast<void**>(&psl));
 
         if (SUCCEEDED(hres))
         {
             // Get the current executable path
-            TCHAR pszExePath[MAX_PATH];
-            GetModuleFileName(nullptr, pszExePath, sizeof(pszExePath));
+            WCHAR pszExePath[MAX_PATH];
+            GetModuleFileNameW(nullptr, pszExePath, ARRAYSIZE(pszExePath));
 
             // Start client minimized
             QString strArgs = "-min";
             // Set -testnet /-regtest options
             strArgs += QString::fromStdString(strprintf(" -testnet=%d -regtest=%d", gArgs.GetBoolArg("-testnet", false), gArgs.GetBoolArg("-regtest", false)));
 
-#ifdef UNICODE
-            boost::scoped_array<TCHAR> args(new TCHAR[strArgs.length() + 1]);
-            // Convert the QString to TCHAR*
-            strArgs.toWCharArray(args.get());
-            // Add missing '\0'-termination to string
-            args[strArgs.length()] = '\0';
-#endif
-
             // Set the path to the shortcut target
             psl->SetPath(pszExePath);
-            PathRemoveFileSpec(pszExePath);
+            PathRemoveFileSpecW(pszExePath);
             psl->SetWorkingDirectory(pszExePath);
             psl->SetShowCmd(SW_SHOWMINNOACTIVE);
-#ifndef UNICODE
-            psl->SetArguments(strArgs.toStdString().c_str());
-#else
-            psl->SetArguments(args.get());
-#endif
+            psl->SetArguments(strArgs.toStdWString().c_str());
 
             // Query IShellLink for the IPersistFile interface for
             // saving the shortcut in persistent storage.
@@ -589,11 +575,8 @@ bool SetStartOnSystemStartup(bool fAutoStart)
             hres = psl->QueryInterface(IID_IPersistFile, reinterpret_cast<void**>(&ppf));
             if (SUCCEEDED(hres))
             {
-                WCHAR pwsz[MAX_PATH];
-                // Ensure that the string is ANSI.
-                MultiByteToWideChar(CP_ACP, 0, StartupShortcutPath().string().c_str(), -1, pwsz, MAX_PATH);
                 // Save the link by calling IPersistFile::Save.
-                hres = ppf->Save(pwsz, TRUE);
+                hres = ppf->Save(StartupShortcutPath().wstring().c_str(), TRUE);
                 ppf->Release();
                 psl->Release();
                 CoUninitialize();
diff --git a/src/util.cpp b/src/util.cpp
index 84d8175389..84a4adcfd4 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1139,14 +1139,14 @@ void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length) {
 #ifdef WIN32
 fs::path GetSpecialFolderPath(int nFolder, bool fCreate)
 {
-    char pszPath[MAX_PATH] = "";
+    WCHAR pszPath[MAX_PATH] = L"";
 
-    if(SHGetSpecialFolderPathA(nullptr, pszPath, nFolder, fCreate))
+    if(SHGetSpecialFolderPathW(nullptr, pszPath, nFolder, fCreate))
     {
         return fs::path(pszPath);
     }
 
-    LogPrintf("SHGetSpecialFolderPathA() failed, could not obtain requested path.\n");
+    LogPrintf("SHGetSpecialFolderPathW() failed, could not obtain requested path.\n");
     return fs::path("");
 }
 #endif