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windowswinapiwallpaper

Setting wallpaper with Win API

I want to programmatically set a wallpaper. Here's the only solution I've found so far: 

SystemParametersInfoW(SPI_SETDESKWALLPAPER, 1, (void*)wallpaperImageFilePath.utf16(), SPIF_UPDATEINIFILE | SPIF_SENDCHANGE);

My question is: how to tell Windows I want the wallpaper image centered (not resized)? The solution above always sets the image in stretch mode. According to MSDN, there are no flags to accompany SPI_SETDESKWALLPAPER.

Solution

  • There is no API function for setting the wallpaper orientation. You have to go to the Registry directly instead, specifically the "WallpaperStyle" and "TileWallpaper" values of the HKEY_CURRENT_USER\Control Panel\Desktop key. See this article for an example:

    Set the desktop wallpaper (CppSetDesktopWallpaper)