如何刷新登录屏保参数更改? [英] How to refresh logon screensaver parameter changes?

问题描述

我有一个 Windows 服务，它可能会更改 Windows 中登录屏幕保护程序的超时时间(如 此处所述.) 为此，我将以下注册表项更改为以秒为单位的超时时间:

I have a Windows service that may change the timeout on the logon screensaver in Windows (as described here.) To do that I change the following registry key to the timeout in seconds:

HKEY_USERS\.DEFAULT\Control Panel\Desktop\ScreenSaveTimeOut

问题是如何让操作系统读取"或刷新在上面的注册表项更改后实际屏幕保护程序超时?

The issue is that how do I make OS "read" or refresh the actual screensaver timeout after a change in the registry key above?

我的实践表明，只有在我重新启动系统时才会刷新它(当然)，但在我的情况下，我需要在不重新启动的情况下应用它.

My practice shows that it is refreshed (for sure) only when I reboot the system, but in my case I need it to be applied without the reboot.

EDIT_1:根据下面的建议，在我看来，我尝试了以下所有可能的标志组合:

EDIT_1: After suggestion below I tried, as it seems to me, all possible combinations of the flags for the following:

DWORD bsmInfo1 = BSM_ALLDESKTOPS;
DWORD dwFlgs = BSF_FORCEIFHUNG | BSF_IGNORECURRENTTASK | BSF_NOTIMEOUTIFNOTHUNG | BSF_SENDNOTIFYMESSAGE;
int nbsm1 = ::BroadcastSystemMessage(dwFlgs, &bsmInfo1, WM_SETTINGCHANGE, 0, (LPARAM)L"Windows");
DWORD bsmInfo2 = BSM_ALLDESKTOPS;
int nbsm2 = ::BroadcastSystemMessage(dwFlgs, &bsmInfo2, WM_SETTINGCHANGE, 0, (LPARAM)L"WindowsThemeElement");

无济于事:(我从两个电话中都收到了 1，但没有任何效果.

to no avail :( I receive 1 as a result from both calls but it has no effect.

推荐答案

我能够解决这个问题.-.-.

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