MouseDown and DoubleClick

Targets Web
1

is there a way to handle these two events in a control, MouseDown and DoubleClick ?

I get always the handler of MouseDown, and never of DoubleClick

I should manage the DoubleClick to get a double-tap…

2

[quote=201713:@Marc Couraud]is there a way to handle these two events in a control, MouseDown and DoubleClick ?

I get always the handler of MouseDown, and never of DoubleClick

I should manage the DoubleClick to get a double-tap…[/quote]

In MouseDown, you can time how long since the previous click/tap, and if it is less than half a second, then it is double click. A static variable set to Ticks, which you look at when you enter the MouseDown would do ; if Ticks-OldTicks <= 30 then doubleclick.

3

yes, I can…
but in Xojo desktop, the two events are correctly raised by xojo
thanks Michel

4

[quote=201715:@Marc Couraud]yes, I can…
but in Xojo desktop, the two events are correctly raised by xojo
thanks Michel[/quote]

There are things that do not behave quite the same in each platform. I was just trying to offer a solution.

5

[quote=201713:@Marc Couraud]is there a way to handle these two events in a control, MouseDown and DoubleClick ?

I get always the handler of MouseDown, and never of DoubleClick

I should manage the DoubleClick to get a double-tap…[/quote]

From what I see here on Mac and Windows, WebPage DoubleClick fires after two MouseDown. So both events do fire, the problem being to discriminate.

I know you believe it should work as in Desktop. Maybe you should file a bug report. Until it is fixed, though, the only way to distinguish them will be a workaround. Incidentally, your question was :

[quote]]is there a way to handle these two events in a control, MouseDown and DoubleClick ?[/quote]. It did not say anything about Xojo Desktop.

I proposed a first workaround above, here is a second one.

  • Add a Timer Class to the project (tried with a webtimer, once disabled it stays down, so its no good).
  • Add an instance of this timer to the WebPage. I called it KeyDownTimer
  • In its Action event :

Sub Action() System.DebugLog "MouseDown" me.enabled = False End Sub

  • In the WebPage/control MouseDown :

Sub MouseDown(X As Integer, Y As Integer, Details As REALbasic.MouseEvent) ouseDownTimer.Enabled = False MouseDownTimer.Period = 500 MouseDownTimer.Mode = Timer.ModeSingle MouseDownTimer.Enabled = True End Sub

  • In the WebPage/Control DoubleClick :

Sub DoubleClick(X As Integer, Y As Integer, Details As REALbasic.MouseEvent) system.debuglog "doubleclick" MouseDownTimer.Enabled = False End Sub

In MouseDown, the timer is launched. If a doubleclick happens, it cancels the timer and its action never fires. If nothing happens within half a second, MouseDownTimer Action fires.

So now you have MouseDown through the Action event of the MouseDownTimer, and DoubleClick in the normal event.

6

Ok, I’ve implemented your first solution, and it works for the moment
I keep the second :slight_smile: