[2008] How to Ignore a Click Event?

Hey all,

I'm developing a touchscreen application, and today's task is to make a custom slider control made up of a panel and a picturebox who's parent is said panel.

The picturebox is moved up and down the panel based on the cursor location during the .MouseMove event. That part, works a treat. Problem is, if the panel is clicked (which can happen inadvertently with a touchscreen), the picturebox will slide down to the cursor's location, then snap back to it's original location and do this over and over...giving quite an ugly affect.

I can't see how my code makes it slide and go back repeatedly, so I was thinking the easiest way out is to ignore the click event.

Any ideas? I have attached the project so you see exactly what I mean

Cheers,
Scott

It's not responding to the click. It's responding to the MouseMove.

Try something like checking for the last Mouse location. If it moves more than x amount then disregard the move.

"It's not responding to the click. It's responding to the MouseMove."

That wasn't very clear was it?
What I mean is that when the screen is touched in another location, the mouse has now moved. Therefore, a click = a mouse move.

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Originally Posted by FourBlades

"It's not responding to the click. It's responding to the MouseMove."

That wasn't very clear was it?
What I mean is that when the screen is touched in another location, the mouse has now moved. Therefore, a click = a mouse move.

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I don't quite understand what you're suggesting this this last comment.

It's actually quite hard to get this to occur and it only happens on the odd occasion. I still feel you need to have it ignore (or not actually change the location of the picturebox) if the mouseclick/mousedown is detected - because I can actually get it to scroll with the mouse button pressed. I played with the 'MouseButtons.None' thingy but didn't get any love there.

I'll have more of play once I have it running on the touchscreen itself and see if I can even get it to happen - may not have to worry about it.

I think it's also worth pointing out that it's impossible (AFAIK) to click on the panel without causing a MouseMove event. The issue is that you can do a Click and a MouseMove simultaneously. So again, want to find a way to ignore the "move" if that move is a 'click' as opposed to just a cursor movement. Surely it's easy, just gotta find the right decombobulator!

What if you slide the picture box in MouseDown event.

Quote:

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Originally Posted by Deepak Sakpal

What if you slide the picture box in MouseDown event.

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Thanks for the suggestion Deepak.

If it were a normal application that may be a nice solution, however for this particular situation, the user is merely swiping their finger up or down the touchscreen. Unfortunately if I used the MouseDown event, you would lose the ability to slide the picturebox when the mouse was not down.

To click on a touchscreen (at least my touchscreens), you must tap the screen quite sharply, and to 'click and drag' takes quite a bit of pressure, takes that initial sharp tap and a firm drag. You can however move the mouse very easily by a gentle finger movement, which is why I have chosen to use MouseMove event.

Any other ideas? Maybe someone knows how to tell if the mousebutton is down while I'm in the MouseMove event, I reckon it'd solve my issue (however I am happy to be proven wrong!)