How to reload registry settings? (compact frame on Symbol device)

Question

I have a PDA from Symbol manufacturer. I would like to change programmaticaly power timeouts and backlight timeouts. The application responsible for these settings is written in C # and based on the Microsoft Compact Framework 3.5.

I managed to change these timeout values: I changed the registry keys in HKLM / System / CurrentControlSet / Control / Power for power timeouts And in HKCU / ControlPanel / Backlight for backlight timeouts.

It works fine, but these settings only apply after a soft reset of the device. I would like these settings to be applied immediately after my application enters the registry keys.

Have some of you already encountered this problem? How can I reload the settings in the registry? There must be a way to achieve this, because when I manually set these values ​​using the Windows Mobile Config panel, the settings are applied immediately.

thanks for the help

Answer 1

You must notify the OS that you have made changes - it does not constantly monitor or load values. Just pass WM_SETTINGCHANGE:

SendMessage(HWND_BROADCAST, WM_SETTINGCHANGE, NULL,NULL);