bool ImageHandler::GetDesktopImageData(ImageData& imageData)
{
CRegKey keyColors;
if (keyColors.Open(HKEY_CURRENT_USER, L"Control Panel\\Colors", KEY_READ) != ERROR_SUCCESS) return false;
CString strBackground;
DWORD dwDataSize = 32;
if (keyColors.QueryStringValue(L"Background", strBackground.GetBuffer(dwDataSize), &dwDataSize) != ERROR_SUCCESS)
{
strBackground.ReleaseBuffer();
return false;
}
strBackground.ReleaseBuffer();
wstringstream streamBk(wstring(strBackground.operator LPCTSTR()));
DWORD r = 0;
DWORD g = 0;
DWORD b = 0;
streamBk >> r;
streamBk >> g;
streamBk >> b;
CRegKey keyDesktop;
if (keyDesktop.Open(HKEY_CURRENT_USER, L"Control Panel\\Desktop", KEY_READ) != ERROR_SUCCESS) return false;
DWORD dwChars = 0;
CString strWallpaperFile;
CString strWallpaperStyle;
CString strWallpaperTile;
dwChars = 32;
keyDesktop.QueryStringValue(L"WallpaperStyle", strWallpaperStyle.GetBuffer(dwChars), &dwChars);
dwChars = 32;
keyDesktop.QueryStringValue(L"TileWallpaper", strWallpaperTile.GetBuffer(dwChars), &dwChars);
dwChars = MAX_PATH;
keyDesktop.QueryStringValue(L"Wallpaper", strWallpaperFile.GetBuffer(dwChars), &dwChars);
strWallpaperStyle.ReleaseBuffer();
strWallpaperFile.ReleaseBuffer();
strWallpaperTile.ReleaseBuffer();
// set background data
imageData.strFilename = strWallpaperFile;
imageData.bRelative = true;
imageData.bExtend = false;
imageData.crBackground = RGB(static_cast<BYTE>(r), static_cast<BYTE>(g), static_cast<BYTE>(b));
if (strWallpaperTile == L"1")
{
imageData.imagePosition= imagePositionTile;
}
else
{
if (strWallpaperStyle == L"0")
{
imageData.imagePosition= imagePositionCenter;
}
else if (strWallpaperStyle == L"6")
{
imageData.imagePosition= imagePositionFit;
}
else if (strWallpaperStyle == L"10")
{
imageData.imagePosition= imagePositionFill;
}
else if (strWallpaperStyle == L"22")
{
imageData.imagePosition= imagePositionFill;
imageData.bExtend = true;
}
else
{
imageData.imagePosition= imagePositionStretch;
}
}
return true;
}
bool ImageHandler::GetDesktopImageData(ImageData& imageData)
{
CRegKey keyColors;
if (keyColors.Open(HKEY_CURRENT_USER, L"Control Panel\\Colors", KEY_READ) != ERROR_SUCCESS) return false;
CString strBackground;
DWORD dwDataSize = 32;
if (keyColors.QueryStringValue(L"Background", strBackground.GetBuffer(dwDataSize), &dwDataSize) != ERROR_SUCCESS)
{
strBackground.ReleaseBuffer();
return false;
}
strBackground.ReleaseBuffer();
wstringstream streamBk(wstring(strBackground.operator LPCTSTR()));
DWORD r = 0;
DWORD g = 0;
DWORD b = 0;
streamBk >> r;
streamBk >> g;
streamBk >> b;
CRegKey keyDesktop;
if (keyDesktop.Open(HKEY_CURRENT_USER, L"Control Panel\\Desktop", KEY_READ) != ERROR_SUCCESS) return false;
DWORD dwChars = 0;
CString strWallpaperFile;
CString strWallpaperStyle;
CString strWallpaperTile;
dwChars = 32;
keyDesktop.QueryStringValue(L"WallpaperStyle", strWallpaperStyle.GetBuffer(dwChars), &dwChars);
dwChars = 32;
keyDesktop.QueryStringValue(L"TileWallpaper", strWallpaperTile.GetBuffer(dwChars), &dwChars);
dwChars = MAX_PATH;
keyDesktop.QueryStringValue(L"Wallpaper", strWallpaperFile.GetBuffer(dwChars), &dwChars);
strWallpaperStyle.ReleaseBuffer();
strWallpaperFile.ReleaseBuffer();
strWallpaperTile.ReleaseBuffer();
// set background data
imageData.strFilename = strWallpaperFile;
imageData.bRelative = true;
imageData.bExtend = false;
imageData.crBackground = RGB(static_cast<BYTE>(r), static_cast<BYTE>(g), static_cast<BYTE>(b));
if (strWallpaperTile == L"1")
{
imageData.imagePosition= imagePositionTile;
}
else
{
if (strWallpaperStyle == L"0")
{
imageData.imagePosition= imagePositionCenter;
}
else if (strWallpaperStyle == L"6")
{
imageData.imagePosition= imagePositionFit;
}
else if (strWallpaperStyle == L"10")
{
imageData.imagePosition= imagePositionFill;
}
else if (strWallpaperStyle == L"22")
{
imageData.imagePosition= imagePositionFill;
imageData.bExtend = true;
}
else
{
imageData.imagePosition= imagePositionStretch;
}
}
#if _WIN32_WINNT >= 0x0602
if( ImageHandler::IsWin8() )
{
CComPtr<IDesktopWallpaper> desktopWallpaper;
HRESULT hr = desktopWallpaper.CoCreateInstance(CLSID_DesktopWallpaper, nullptr, CLSCTX_ALL);
if( SUCCEEDED(hr) )
{
CComHeapPtr<wchar_t> spszWallpaper;
hr = desktopWallpaper->GetWallpaper(NULL, &spszWallpaper);
if( hr == S_OK )
imageData.bExtend = true;
}
}
#endif
return true;
}
