MouseUp and DoubleClick

[Sue & Bill]

Does a double click action also generate two MouseUp events?

If so, what is a good method in my MouseUp event handler to detect that
a MouseUp is part of a double click action?

Thanks in advance.

[Brendan Grant]

If by double click action you mean having the mouse button be clicked twice
on a given control in order to cause a double click, then yes, two MouseUp
events would end up being fired.

My best suggestion would be to limit the work done on a MouseUp event so
that if fired it does not interfere with a possible later DoubleClick event.

Brendan
"Sue & Bill" wrote:

Does a double click action also generate two MouseUp events?

If so, what is a good method in my MouseUp event handler to detect that
a MouseUp is part of a double click action?

Thanks in advance.

[Sue & Bill]

I am doing graphics and can't avoid handling MouseDown and MouseUp.
How do people manage in such circumstances? That is, how can I tell
that a MouseUp is part of a double click and should be ignored?

Thanks

[roer.garcia]

Try with the timer function.

I test and get this miliseconds marks
in a single click
down event 35937.86
up event 35938
click event 35938

in a double click
down 35938.97
up 35939.06
click 35939.06
db 35939.16
up 35939.27

you can check the miliseconds marks between events and discards when
need it.

Sorry for my english.
Regards

[Brendan Grant]

I agree with Roer, some sort of timing or flag method is really your only
choice because you could not have a DoubleClick event cancel a previously
fired event.

One method might be to setup a timer that triggers the MouseUp event to
complete (after being initially fired) some interval after it was actually
triggered, only if a flag remains set, a flag that is altered when the
DoubleClick event is fired.

Brendan
"ro*********@gmail.com" wrote:

Try with the timer function.

I test and get this miliseconds marks
in a single click
down event 35937.86
up event 35938
click event 35938

in a double click
down 35938.97
up 35939.06
click 35939.06
db 35939.16
up 35939.27

you can check the miliseconds marks between events and discards when
need it.

Sorry for my english.
Regards

[Sue & Bill]

Thanks all. I have done that. Now, any tips on how to retrieve that
double click interval setting from Windows?

Brendan Grant wrote:

I agree with Roer, some sort of timing or flag method is really your only
choice because you could not have a DoubleClick event cancel a previously
fired event.

One method might be to setup a timer that triggers the MouseUp event to
complete (after being initially fired) some interval after it was actually
triggered, only if a flag remains set, a flag that is altered when the
DoubleClick event is fired.

Brendan
"ro*********@gmail.com" wrote:

Try with the timer function.

I test and get this miliseconds marks
in a single click
down event 35937.86
up event 35938
click event 35938

in a double click
down 35938.97
up 35939.06
click 35939.06
db 35939.16
up 35939.27

you can check the miliseconds marks between events and discards when
need it.

Sorry for my english.
Regards

[roer.garcia]

Hard to find, but here is
Declare Function GetDoubleClickTime Lib "user32.dll" () As Long

Private Sub Command1_Click()
Dim doubletime As Long
doubletime = GetDoubleClickTime()
Text1 = Str(doubletime) + " Millisecond(s)"
End Sub

Founded at http://www.vbcode.com/Asp/showsn.asp?theID=6126
Thanks to Author: Ayan Chaudhuri

[Sue & Bill]

(y) Thanks.