OpenEuphoria

RE: SS_NOTIFY and mouse clicks

• Posted by Andy Drummond <andy at kestreltele.com> Nov 09, 2004
• 504 views

Derek Parnell wrote:
> 
> 
> posted by: Derek Parnell <ddparnell at bigpond.com>
> 
> Tommy Carlier wrote:
> > 
> > Derek Parnell wrote:
> > > What's an "unclick" event? A click event is a combination of Mousedown
> > > followed by MouseUp, within the double-click period, and within a few
> > > pixels of each other.
> > 
> > Why does it have to be within the double-click period? If I press down
> > the mouse button, I wait a second, and release the button without moving
> > the mouse, shouldn't that count as a click?
> 
> Maybe. On things like buttons and menus, things that have a specific 
> Microsoft generated click event, the time delay is not significant. But 
> on
> things like bitmaps, windows, labels etc... it might be.
> 
> To me the 'concept' of a click is a short-sharp action (relatively 
> speaking)
> which is different from a mouse up/down event. THat's why I choose to 
> implement it this way.
> 
> > Certain people have heavy fingers, and when they press down a mouse 
> > button,
> > it's physically tough to lift their heavy finger to release the button.
> > 
> > I think it is important to make your applications accessible, also for
> > people with heavy fingers.
> 
> Such people already tend to have set their double-click period to a
> reasonable length for themselves. 
> 
> However, I can easily set up Win32lib so that the coder has a choice 
> over
> this aspect of a click event. It'll be in the next version for you.
> 
> -- 
> Derek Parnell
> Melbourne, Australia

Ah well, what I ought to have said is that this application is actually
for a touch-screen monitor where the touch screen output looks like
mouse-button-down followed a few thinks later by mouse-button-up.
I looked at the event & params[] fields when the handler was called
and they were zero and null for all clicks. Hence the problem.
BTW, I'm using Judith's IDE and just set a text field as "Clickable",
that's how I got into this problem.  I would use Windows buttons
but setting their background colours on an ad-hoc basis is not nice.
Besides I can make nice fancy buttons by drawing them myself ;)

So - if the next version of Win32Lib (which is SOOOOOooo useful) gives
me the ability to select which mouse events I want that would be great. 
So do I hold my breath? Any ideas when it might appear?

Thanks for everyone's comments - including Wolf's!!