static async Task Loop()
{
var lastDay = -1;
string lasturl = "";
while (true)
{
try
{
//检查日期并更换桌面壁纸
var currentDay = DateTime.Now.Day;
if (lastDay != currentDay)
{
//新的一天来临了！昨晚被杀的是（划掉
//获取最新的必应美图，此高清Uri由晨旭提供~
var response = await client.GetAsync("https://cn.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1&pid=hp&uhd=1&uhdwidth=3840&uhdheight=2160");
if (!response.IsSuccessStatusCode)
{
continue;
}
var json = await response.Content.ReadAsStringAsync();
var responseObj = BingResponse.FromJson(json);
var url = "https://cn.bing.com" + responseObj.Images[0].Url;
if (url == lasturl)
{
//这和上次的一样嘛！等待interval后重新获取
lastDay = -1;
}
else
{
response = await client.GetAsync(url);
string tmp = Path.Combine(Path.GetTempPath(), "temp.jpg");
using (System.Drawing.Image image = System.Drawing.Image.FromStream(await response.Content.ReadAsStreamAsync()))
{
//删除可能存在的旧的临时文件
if (File.Exists(tmp))
{
try
{
File.Delete(tmp);
}
catch { }
}
//保存图片
image.Save(tmp);
}
//设置壁纸
RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop", true);
string WallpaperStyle = "", TileWallpaper = "";
switch (style)
{
case Program.WallpaperStyle.Center:
WallpaperStyle = "1";
TileWallpaper = "0";
break;
case Program.WallpaperStyle.Stretch:
WallpaperStyle = "2";
TileWallpaper = "0";
break;
case Program.WallpaperStyle.StretchToFill:
WallpaperStyle = "10";
TileWallpaper = "0";
break;
case Program.WallpaperStyle.Tile:
WallpaperStyle = "1";
TileWallpaper = "1";
break;
}
key.SetValue("WallpaperStyle", WallpaperStyle);
key.SetValue("TileWallpaper", TileWallpaper);
SystemParametersInfo
(
SPI_SETDESKWALLPAPER,
0,
tmp,
SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE
);
lastDay = currentDay;
lasturl = url;
if (showCopyright)
{
//绘制版权信息
var copyright = responseObj.Images[0].Copyright.Replace("(", "").Replace(")", "").Replace(" ©", "\n©");
DesktopTextHelper.ClearText();
DesktopTextHelper.DrawText("Microsoft YaHei UI", 14, FontStyle.Regular, Color.FromArgb(255, 255, 255, 255), copyright);
}
}
}
}
catch { }
await Task.Delay(TimeSpan.FromMinutes(interval));
}
}
