turning monitor on laptop puts application to sleep also

[rudy999 2]

I have an app that calls

 PostMessage(Handle, WM_SYSCOMMAND, SC_MONITORPOWER, c_MONITOR_OFF);

 

Then with a timer turned the

Monitor back on. c_MONITOR_ON

 

On my laptop - (DELL , Win 11) - this turns off the monitor, but also the power button turns off,

and with a little trouble shooting 0 it appears as if the timer does not fire after the Postmessage for the

turn off of the monitor.

 

- keyboard click or mouse move restores power to monitor and then the timer event fires/

A) This did not happen on a Lenovo laptop with Windows 10.

B) This does not seem to happen (more testing needed) on a Dell tower pc with Win 11.

 

I looked at all the power - energy settings on the laptop and turned 'off' as much as possible.

I thought it was Win 11 but it could be the laptop..

 

Any comments or advice or further places to look is appreciated.

 

[DelphiUdIT 257]

Try a look at this: