How to detect the active app

[Donald Shimoda 0]

I want to detect the windows active app using a tray app. Is posible?

 

And how to detect if theres keyboard or mouse activity?

 

Best regards.

[aehimself 396]

On 7/23/2020 at 3:47 AM, Donald Shimoda said:

I want to detect the windows active app using a tray app. Is posible?

GetTopWindow or GetActiveWindow, depending on your needs

 

On 7/23/2020 at 3:47 AM, Donald Shimoda said:

And how to detect if theres keyboard or mouse activity?

function SecondsIdle: DWord;
var
 liInfo: TLastInputInfo;
begin
 liInfo.cbSize := SizeOf(TLastInputInfo) ;
 GetLastInputInfo(liInfo) ;
 Result := (GetTickCount - liInfo.dwTime) DIV 1000;
end;

 

[Remy Lebeau 1393]

13 hours ago, aehimself said:

GetTopWindow or GetActiveWindow, depending on your needs

GetTopWindow() returns the CHILD window that is at the top of the z-order of a specified PARENT window.

 

GetActiveWindow() returns the currently active window belonging to the CALLING THREAD (or another thread that is assigned to the message queue of the calling thread).

 

Neither of those are well-suited for finding the active window of ANOTHER app.  Have a look at GetForegroundWindow() instead.

Edited July 24, 2020 by Remy Lebeau

[aehimself 396]

I should pay more attention to the details; I thought I used one of these functions before. As I checked my sources - you are right. GetForegroundWindow it is.

[Donald Shimoda 0]

2 hours ago, Remy Lebeau said:

Neither of those are well-suited for finding the active window of ANOTHER app.  Have a look at GetForegroundWindow() instead.

Thanks Remmy.

 

For check overall mouse and keyboard activity for windows which is the best option?

 

Best regards.

[Remy Lebeau 1393]

1 hour ago, Donald Shimoda said:

For check overall mouse and keyboard activity for windows which is the best option?

Depends on your needs.  You could use GetLastInputInfo() in a loop/timer.  Or you could use SetWindowsHookEx() or RegisterRawInputDevices() to receive real-time events from the mouse/keyboard directly.