Пересоздать (перестроить) кеш иконок Windows, так, как это делала Microangelo On Display:
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#define NO_WIN32_LEAN_AND_MEAN #include <string> #include <shlobj.h> #include <tchar.h> #include <registry.hpp> #include <sstream> #define SSTR( x ) static_cast< std::ostringstream & >( \ ( std::ostringstream() << std::dec << x ) ).str() const std::string keyWindowMetrics = "Control Panel\\Desktop\\WindowMetrics\\"; std::string paramShellIconSize = "Shell Icon Size"; bool regWriteString(HKEY rootKey, std::string Key, std::string paramName, std::string Value) { bool ret = false; TRegistry *reg = new TRegistry(KEY_WRITE); try { reg->RootKey = rootKey; reg->OpenKey(Key.c_str(), true); reg->WriteString(paramName.c_str(), Value.c_str()); reg->CloseKey(); } __finally { delete reg; } return ret; } std::string regReadString(HKEY rootKey, std::string Key, std::string paramName) { std::string ret; TRegistry *reg = new TRegistry(KEY_READ); try { reg->RootKey = rootKey; if(reg->OpenKeyReadOnly(Key.c_str())) ret = reg->ReadString(paramName.c_str()).c_str(); reg->CloseKey(); } __finally { delete reg; } return ret; } std::string WindowsDir() { char buffer[255]; GetWindowsDirectory(buffer, sizeof(buffer)); return buffer; } static BOOL _stdcall PASCAL UpdateAllWindowsCallback(HWND WHandle, void *Parm) // Parm Pointer { SendMessage(WHandle, WM_SETTINGCHANGE, 0, 0); return true; } void _stdcall UpdateAllWindows() { EnumWindows((int (__stdcall *)())UpdateAllWindowsCallback, WM_SETTINGCHANGE); } std::string GetIconCacheFile() { TCHAR winDir[MAX_PATH]; SHGetSpecialFolderPath(0, winDir, CSIDL_WINDOWS, false); AnsiString aStr_winDir = winDir; AnsiString s_winDir = aStr_winDir + "ShellIconCache"; return s_winDir.c_str(); } void DeleteIconCache() { std::string sfile; sfile = GetIconCacheFile(); if(FileExists(sfile.c_str())) { if (!DeleteFile(sfile.c_str())) ShowMessage("Can not erase file!"); // Can not erase file [sfile] } ////////////////////////////////////////////////////////////////////////////////////// // Здесь необходимо проверить, необходима ли перезагрузка ОС ////////////////////////////////////////////////////////////////////////////////////// } bool RefreshActiveDesktop() { TGUID CLSID_ActiveDesktop = StringToGUID("{75048700-EF1F-11D0-9888-006097DEACF9}"); //IActiveDesktop ActiveDesktop; HRESULT hr; IActiveDesktop* pIAD; try { // Вместо Borland-овской функции CreateComObject(CLSID_ActiveDesktop) используем CoCreateInstance(ShlObj::CLSID_ActiveDesktop) // 1. Инициализация библиотеки COM (заставляем Windows загрузить библиотеки DLL). CoInitialize(NULL); // Создаем COM-объект, используя CO-класс Active Desktop, поставляемый оболочкой. // Четвертый параметр сообщает COM какой именно интерфейс нам нужен (IActiveDesktop). hr = CoCreateInstance(CLSID_ActiveDesktop, NULL, CLSCTX_INPROC_SERVER, IID_IActiveDesktop, (void**)&pIAD); // ???? | CLSCTX_LOCAL_SERVER, ???? if (SUCCEEDED(hr)) { // Если COM-объект был создан, то вызываем его метод hr = pIAD->ApplyChanges(AD_APPLY_ALL || AD_APPLY_FORCE); // ActiveDesktop = CreateComObject(CLSID_ActiveDesktop) as IActiveDesktop; // ActiveDesktop.ApplyChanges(AD_APPLY_ALL or AD_APPLY_FORCE); } } catch(...) { // Exception // cout << _T("CoCreateInstance() failed.") << endl return false; } // __finally { // Освобождаем интерфейс. pIAD->Release(); // Разинициализируем библиотеку COM CoUninitialize(); return true; } } void RefreshDesktop() { HWND Hwnd; bool fl; fl = RefreshActiveDesktop(); if (!fl) { Hwnd = FindWindow("Progman", "Program Manager"); if (Hwnd != 0) SendMessage(Hwnd, WM_COMMAND, 0xA065, 0); else UpdateAllWindows; } } void RebuildIconCache() { std::string news, olds; int sz; // Changing cursor to clock - StartWait(); try { DeleteFile(GetIconCacheFile().c_str()); olds = regReadString(HKEY_CURRENT_USER, keyWindowMetrics, paramShellIconSize); sz = StrToIntDef(olds.c_str(), 32); ++sz; news = SSTR(sz); regWriteString(HKEY_CURRENT_USER, keyWindowMetrics, paramShellIconSize, news); UpdateAllWindows(); if(olds == "") olds = "32"; regWriteString(HKEY_CURRENT_USER, keyWindowMetrics, paramShellIconSize, olds); UpdateAllWindows(); RefreshDesktop(); } catch(...) { } // StopWait(); } |
