How to move or dragg the viewport

How could I move/dragg the viewport by holding down middle mouse button in my game, just like in construct 2 viewport?

So far I have managed to do this:

Cameraman:

Substract Cursor.X/2 from CurrentX

Substract Cursor.Y/2 from CurrentY

Cameraman:

Set X to Cameraman.CurrentX

Set Y to Cameraman.CurrentY

This works well, but returns view back to the starting point.

Panning.capx

Nice example Yann, thanks.

Thanks Yann. It's working nicely.

Yann, great example! I wanting to apply this to touch. I replaced all the mouse expressions with touch ones, but it didn't work, is there something else I need to do?

EyeHawk

dunno share capx

Yann, ok here it is:

http://www.learnrec.com/C2forum/TouchPanning.capx

I just replaced the mouse with touch , but I guess I'm missing something...

EyeHawk

add in event 2

System: dragging = 0

when you are "in touch" sMX and sMY gets constantly updated so on event 4

sMX and sMY are always equal to Touch.AbsoluteX and Touch.AbsoluteY so you have scroll to sSX + 0 , sSY + 0... no movement.

In the original capx it was a trigger "on click" (instantaneous) not "mouse is down" (continue)

Yann - it works perfectly! You're a true C2 guru thanks again :)

I've already provided a capx here