mirror of
https://github.com/WinampDesktop/winamp.git
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81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
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#include "main.h"
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#include "./ieversion.h"
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#include <shlwapi.h>
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#include <strsafe.h>
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HRESULT MSIE_GetVersionString(LPWSTR pszBuffer, INT cchBufferMax)
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{
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if (NULL == pszBuffer) return E_INVALIDARG;
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HKEY hKey = NULL;
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LONG result = RegOpenKeyEx(HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Internet Explorer", 0,
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STANDARD_RIGHTS_READ | KEY_QUERY_VALUE, &hKey);
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if (ERROR_SUCCESS == result)
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{
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DWORD cbBuffer = sizeof(WCHAR) * cchBufferMax;
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result = RegQueryValueEx(hKey, L"svcVersion", NULL, NULL, (BYTE*)pszBuffer, &cbBuffer);
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if (ERROR_SUCCESS != result
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|| L'\0' == *pszBuffer)
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{
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cbBuffer = sizeof(WCHAR) * cchBufferMax;
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result = RegQueryValueEx(hKey, L"Version", NULL, NULL, (BYTE*)pszBuffer, &cbBuffer);
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}
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RegCloseKey(hKey);
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}
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if (ERROR_SUCCESS != result)
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{
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*pszBuffer = L'\0';
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return HRESULT_FROM_WIN32(result);
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}
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return S_OK;
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}
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HRESULT MSIE_GetVersion(INT *majorOut, INT *minorOut, INT *buildOut, INT *subBuildOut)
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{
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INT szVersion[4] = { 0, 0, 0, 0};
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WCHAR szBuffer[64] = {0};
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HRESULT hr = MSIE_GetVersionString(szBuffer, ARRAYSIZE(szBuffer));
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if (SUCCEEDED(hr))
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{
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INT index = 0;
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LPWSTR block = szBuffer;
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LPWSTR cursor = block;
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for(;;)
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{
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if (L'\0' == *cursor)
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{
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if (block != cursor && FALSE != StrToIntEx(block,STIF_DEFAULT, &szVersion[index]))
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index++;
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break;
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}
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else if (L'.' == *cursor)
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{
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*cursor = L'\0';
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if (block != cursor && FALSE != StrToIntEx(block,STIF_DEFAULT, &szVersion[index]))
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{
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index++;
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if (index == ARRAYSIZE(szVersion))
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break; // too many numbers
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}
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cursor++;
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block = cursor;
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}
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cursor++;
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}
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if (index < ARRAYSIZE(szVersion))
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hr = E_FAIL;
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}
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if (NULL != majorOut) *majorOut = szVersion[0];
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if (NULL != minorOut) *minorOut = szVersion[1];
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if (NULL != buildOut) *buildOut = szVersion[2];
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if (NULL != subBuildOut) *subBuildOut = szVersion[3];
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return hr;
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}
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