修改注册表后不重启计算机边生效。

const int WM_SETTINGCHANGE = 0x001A;

const int HWND_BROADCAST = 0xffff;

IntPtr result1;

public enum SendMessageTimeoutFlags : uint

{

SMTO_NORMAL = 0x0000,

SMTO_BLOCK = 0x0001,

SMTO_ABORTIFHUNG = 0x0002,

SMTO_NOTIMEOUTIFNOTHUNG = 0x0008

}

[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]

public static extern IntPtr SendMessageTimeout(

IntPtr windowHandle,

uint Msg,

IntPtr wParam,

IntPtr lParam,

SendMessageTimeoutFlags flags,

uint timeout,

out IntPtr result

);

public void ChangeReg()

{

//通知所有打开的程序注册表以修改

SendMessageTimeout(new IntPtr(HWND_BROADCAST), WM_SETTINGCHANGE, IntPtr.Zero, IntPtr.Zero, SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out result1);

}