C#:将桌面壁纸设置为纯色
我使用此代码删除当前壁纸并设置纯色:
public static class WallpaperColorChanger
{
public static void SetColor(Color color)
{
// Remove the current wallpaper
NativeMethods.SystemParametersInfo(
NativeMethods.SPI_SETDESKWALLPAPER,
0,
"",
NativeMethods.SPIF_UPDATEINIFILE | NativeMethods.SPIF_SENDWININICHANGE);
// Set the new desktop solid color for the current session
int[] elements = { NativeMethods.COLOR_DESKTOP };
int[] colors = { System.Drawing.ColorTranslator.ToWin32(color) };
NativeMethods.SetSysColors(elements.Length, elements, colors);
// Save value in registry so that it will persist
RegistryKey key = Registry.CurrentUser.OpenSubKey("Control Panel\\Colors", true);
key.SetValue(@"Background", string.Format("{0} {1} {2}", color.R, color.G, color.B));
}
private static class NativeMethods
{
public const int COLOR_DESKTOP = 1;
public const int SPI_SETDESKWALLPAPER = 20;
public const int SPIF_UPDATEINIFILE = 0x01;
public const int SPIF_SENDWININICHANGE = 0x02;
[DllImport("user32.dll")]
public static extern bool SetSysColors(int cElements, int[] lpaElements, int[] lpaRgbValues);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern int SystemParametersInfo(int uAction, int uParam, string lpvParam, int fuWinIni);
}
}
但是,如果启用了 Windows 7 幻灯片功能并且壁纸每 30 分钟更改一次,例如,当我运行代码时,它会将壁纸更改为纯色,但是当我重新启动计算机时,它会恢复壁纸和幻灯片功能。
为了在重新启动计算机后仍保持纯色,我还必须做什么?
我正在使用 C#、Windows 窗体、Windows 7。
I'm using this code to remove the current wallpaper and set a solid color:
public static class WallpaperColorChanger
{
public static void SetColor(Color color)
{
// Remove the current wallpaper
NativeMethods.SystemParametersInfo(
NativeMethods.SPI_SETDESKWALLPAPER,
0,
"",
NativeMethods.SPIF_UPDATEINIFILE | NativeMethods.SPIF_SENDWININICHANGE);
// Set the new desktop solid color for the current session
int[] elements = { NativeMethods.COLOR_DESKTOP };
int[] colors = { System.Drawing.ColorTranslator.ToWin32(color) };
NativeMethods.SetSysColors(elements.Length, elements, colors);
// Save value in registry so that it will persist
RegistryKey key = Registry.CurrentUser.OpenSubKey("Control Panel\\Colors", true);
key.SetValue(@"Background", string.Format("{0} {1} {2}", color.R, color.G, color.B));
}
private static class NativeMethods
{
public const int COLOR_DESKTOP = 1;
public const int SPI_SETDESKWALLPAPER = 20;
public const int SPIF_UPDATEINIFILE = 0x01;
public const int SPIF_SENDWININICHANGE = 0x02;
[DllImport("user32.dll")]
public static extern bool SetSysColors(int cElements, int[] lpaElements, int[] lpaRgbValues);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern int SystemParametersInfo(int uAction, int uParam, string lpvParam, int fuWinIni);
}
}
However, if the Windows 7 SlideShow feature is enabled and the wallpaper changes every 30 minutes for example, when I run the code it changes the wallpaper to a solid color, but when I restart the computer it brings back the wallpaper and the SlideShow feature.
What else must I do in order to get the solid color to remain even after restarting the computer?
I'm using C#, Windows Forms, Windows 7.
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根据记忆(自从我做这样的事情以来已经有一段时间了),如果您将桌面壁纸设置为“NOTHING”(空字符串),然后将其设置为一个文件(如果您愿意,可以是透明像素,然后再次将其设置为“Nothing”,我相信它会禁用幻灯片。
然后您只需设置桌面颜色,它应该会保留,至于关闭壁纸幻灯片的程序,我不知道 win api 的要求是什么。
From memory (Been a while since I did anything like this), if you set the desktop wallpaper to NOTHING (Empty string), then set it to a file (Can be a transparent pixel if you like, then set it to nothing again, I believe that it disables the slideshow.
You can then just set a desktop colour, and it should stick. As for program turning off the wallpaper slideshow I've no idea what the win api call for that is.