In MsgBox, how do SystemModal and TopMost differ?

[timmy2]

I'm probably just being dense but when I run both of these scripts (compiled) I don't detect any difference in the user experience. (am running Windows 8.1 64b)

SystemModal

#include <GUIConstantsEx.au3>
 #include <MsgBoxConstants.au3>

 $hGUI = GUICreate("Test", 500, 500)
 GUISetState()

 MsgBox($MB_SYSTEMMODAL, "SystemModal", "Press me to continue")

 While 1
     Switch GUIGetMsg()
         Case $GUI_EVENT_CLOSE
             Exit
     EndSwitch
 WEnd

 

TopMost

#include <GUIConstantsEx.au3>
#include <MsgBoxConstants.au3>

 $hGUI = GUICreate("Test", 500, 500)
 GUISetState()

 MsgBox($MB_TOPMOST, "TopMost", "Press me to continue")

 While 1
     Switch GUIGetMsg()
         Case $GUI_EVENT_CLOSE
             Exit
     EndSwitch
 WEnd

 

 

[MikahS]

There is not an icon on the top left of the window using the $MB_TOPMOST. 

$MB_SYSTEMMODAL 4096    System modal (dialog has an icon)

$MB_TOPMOST 262144  MsgBox() has top-most attribute set

 

[timmy2]

There is not an icon on the top left of the window using the $MB_TOPMOST. 

$MB_SYSTEMMODAL 4096    System modal (dialog has an icon)

$MB_TOPMOST 262144  MsgBox() has top-most attribute set

 

Thank you, MikahS, you are correct sir!  I had not noticed the icon. 

I thought SystemModal had more to do with "blocking", but it doesn't seem to block any more than TopMost. Maybe the icon is the only diff.