Setting wallpaper with Win API

问题

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.

回答1:

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)

回答2:

As of Windows 8 there is now a published interface for setting the desktop background. Specifically the IDesktopBackground::SetWallpaper method. MSDN Documentation

The interface also has several methods for getting and setting the configuration of the slideshow, and obtaining the required monitor device paths.

来源：https://stackoverflow.com/questions/14186400/setting-wallpaper-with-win-api