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GfK

This returns garbage. What have I done wrong?

Extern "win32"
  Function SystemParametersInfo(uiAction:Int, uiParam:Int, pvParam:String, fWinIni:Int) = "SystemParametersInfoA@16"
End Extern

Const SPI_GETDESKWALLPAPER = $73

Print getwallpaper()
End

Function GetWallpaper:String()
	Local result:String
	SystemParametersInfo(SPI_GETDESKWALLPAPER, 128, result, 0)
        Return result
End Function