On window, minimizing a window by clicking on its taskbar entry does not make it inactive

Steps to reproduce / test case

• Build AlerterTest.exe with the src files attached
• Run AlerterTest.exe
• If the window is minimized clicking on the minimize button in the titlebar, isActiveWindow() invocation on the window returns false
• However if the window is minimized by clicking on the taskbar, isActiveWindow() invocation on the window returns true

The isActiveWindow() output for the window, in both these cases, can be seen in the console window

Alerting of the taskbar entry for the window can also be noticed to be different; it flashes when minimization is done by clicking on the titlebar button but not when done by clicking on the taskbar entry
More information
The response from isActiveWindow() and hence the behavior of QApplication::alert() should be the same whether a window is minimized by clicking on the minimize button on the titlebar or by clicking on its taskbar entry.