You can use mouse debug code if you set debug = "True".

While debug, you can see such as following information in title.

• Shapes X.X set DU - Mouse Down and Up handler set
• Shapes X.X set D R - Mouse Down handler set / Flag released is "True"
• Shapes X.X set MU C - Mouse Move and Up handler set / Flag clicked is "True"
• Shapes X.X released 120,250 DU R - Mouse released / Mouse Down and Up handler set / Flag released is "True"
• Shapes X.X released 431,33 DU MR - Mouse released / Mouse Down and Up handler set / Flag moved and released is "True"
• Shapes X.X released 423,163 DU CMR -Mouse released / Mouse Down and Up handler set / Flag clicked, moved and released is "True"

Shapes X.X <smrc> <dmu> <cmr>
<smrc>
set - Mouse_SetHandler called
moved x,y - Mouse_OnMove called
released x,y - Mouse_OnUp called
clicked x,y - Mouse_OnDown called
<dmu>
D - Mouse Down handler set
M - Mouse Move handler set
U - Mouse Up handler set
<cmr>
C - flag clicked is "True"
M - flag moved is "True"
R - flag released is "True"

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