setup_native/source/win32/customactions/shellextensions/iconcache.cxx

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  28
  29 #ifdef _MSC_VER
  30 #pragma warning(push, 1) /* disable warnings within system headers */
  31 #endif
  32 #define WIN32_LEAN_AND_MEAN
  33 #include <windows.h>
  34 #include <msiquery.h>
  35 #ifdef _MSC_VER
  36 #pragma warning(pop)
  37 #endif
  38
  39 #include <stdlib.h>
  40
  41 extern "C" UINT __stdcall RebuildShellIconCache(MSIHANDLE)
  42 {
  43     // Rebuild icon cache on windows OS prior XP
  44
  45     OSVERSIONINFO   osverinfo;
  46
  47     osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
  48
  49     if (
  50         GetVersionEx( &osverinfo ) &&
  51         VER_PLATFORM_WIN32_NT == osverinfo.dwPlatformId &&
  52         (
  53         5 < osverinfo.dwMajorVersion ||
  54         5 == osverinfo.dwMajorVersion && 0 < osverinfo.dwMinorVersion
  55         )
  56         )
  57     {
  58         return ERROR_SUCCESS;
  59     }
  60
  61     HKEY    hKey;
  62     DWORD   dwDispostion;
  63     LONG    lError = RegCreateKeyEx( HKEY_CURRENT_USER, TEXT("Control Panel\\Desktop\\WindowMetrics"), 0, NULL, REG_OPTION_VOLATILE, KEY_SET_VALUE | KEY_QUERY_VALUE, NULL, &hKey, &dwDispostion );
  64
  65     if ( ERROR_SUCCESS == lError )
  66     {
  67         TCHAR   szValue[256];
  68         TCHAR   szTempValue[256];
  69         DWORD   cbValue = sizeof(szValue);
  70         DWORD   dwType;
  71         int     iSize = 0;
  72
  73         lError = RegQueryValueEx( hKey, TEXT("Shell Icon Size"), 0, &dwType, (LPBYTE)szValue, &cbValue );
  74
  75         if ( ERROR_SUCCESS == lError )
  76             iSize = atoi( szValue );
  77
  78         if ( !iSize )
  79         {
  80             iSize = GetSystemMetrics( SM_CXICON );
  81             itoa( iSize, szValue, 10 );
  82             cbValue = strlen( szValue ) + 1;
  83             dwType = REG_SZ;
  84         }
  85
  86         itoa( iSize + 1, szTempValue, 10 );
  87         lError = RegSetValueEx( hKey, TEXT("Shell Icon Size"), 0, dwType, (LPBYTE)szTempValue, strlen( szTempValue ) + 1 );
  88
  89         LRESULT lResult = SendMessageTimeout(
  90              HWND_BROADCAST,
  91              WM_SETTINGCHANGE,
  92              SPI_SETNONCLIENTMETRICS,
  93              (LPARAM)TEXT("WindowMetrics"),
  94              SMTO_NORMAL|SMTO_ABORTIFHUNG,
  95              0, NULL);
  96
  97         lError = RegSetValueEx( hKey, TEXT("Shell Icon Size"), 0, dwType, (LPBYTE)szValue, cbValue );
  98
  99         lResult = SendMessageTimeout(
 100              HWND_BROADCAST,
 101              WM_SETTINGCHANGE,
 102              SPI_SETNONCLIENTMETRICS,
 103              (LPARAM)TEXT("WindowMetrics"),
 104              SMTO_NORMAL|SMTO_ABORTIFHUNG,
 105              0, NULL);
 106
 107         lError = RegCloseKey( hKey );
 108     }
 109
 110     return ERROR_SUCCESS;
 111 }
 112
 113 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */