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Home » Developing U++ » U++ Developers corner » Using Pen with U++
Re: Using Pen with U++ [message #56510 is a reply to message #56501] Sat, 20 March 2021 11:25 Go to previous messageGo to previous message
Tom1
Messages: 1212
Registered: March 2007
Senior Contributor
Hi Mirek,

Here are some further findings for the code I posted above. If intermediate MouseMove's are ignored, the following U++ callbacks result for each mouse operation:

CLICK:

LeftDown
LeftUp

DOUBLECLICK:

LeftDown
LeftUp
LeftDouble
LeftUp

TRIPLECLICK:

LeftDown
LeftUp
LeftDouble
LeftUp
LeftTriple
LeftUp

DRAG:

LeftDown
LeftDrag
LeftUp

HOLD:

LeftDown
LeftHold
LeftUp

HOLD+DRAG:

LeftDown
LeftHold
LeftDrag
LeftUp

For Pen we currently get:
CLICK:

LeftDown
LeftUp

DOUBLECLICK:

LeftDown
LeftUp
LeftDown ** Extra
LeftDouble
LeftUp

TRIPLECLICK:

LeftDown
LeftUp
LeftDown ** Extra
LeftDouble
LeftUp
LeftTriple
LeftUp

DRAG:

LeftDown
LeftDrag
LeftUp

HOLD:

LeftDown
!! Missing: LeftHold
LeftRightUp ** !!!

(Hold missing and RightUp emitted instead of LeftUp call!)

HOLD+DRAG:

LeftDown
!! Missing: LeftHold
LeftDrag
LeftUp


The weird Hold behavior is likely caused by Windows Ink internals.

Anyway, in my opinion we should try to get exact the same callbacks from pen as we get from the mouse.

Best regards,

Tom
 
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