How to access to the kKeyRelease Event from a TCanvas

[dudouet]

Hi,

I am trying without success to access to the kKeyRelease signal from a TCanvas (which is in a TRootEmbeddedCanvas). The ProcessedEvent(Int_t, Int_t, Int_t, TObject*) method from TCanvas only gives acces to kKeyRelease. And I have tries with the ProcessedEvent(Event_t*) from TRootEmbeddedCanvas but I don’t have any signal when the mouse is on the Canvas…

Any idea ?

Thanks

Jérémie

[couet]

You said:

@dudouet

I am trying without success to access to the kKeyRelease signal from a TCanvas

and then:

@dudouet

TCanvas only gives acces to kKeyRelease.

It seems a bit contradictory ? …

[dudouet]

Sorry I wanted to say : TCanvas only gives acces to kKeyPressed

[bellenot]

Hi,

You should connect the signal from the embedded canvas’ container to your slot. For example:

   ...
   fECanvas = new TRootEmbeddedCanvas("ECanvas", this, 200, 200);
   AddFrame(fEcanvas, new TGLayoutHints(kLHintsExpandX | kLHintsExpandY, 10, 10, 10, 1));
   fEcanvas->GetContainer()->Connect("ProcessedEvent(Event_t*)", 0, 0, "DumpRootEvent(Event_t*)");

+-----------------+-----------+----------+----------+------+
|      Event name    Window      coord       root     butt |
|                      ID        X    Y     X    Y    code |
+-----------------+-----------+----------+----------+------+
|     MotionNotify  0x3409938    85   93   129  159    0   |
|     MotionNotify  0x3409938    85   92   129  158    0   |
|     MotionNotify  0x3409938    83   92   127  158    0   |
|     MotionNotify  0x3409938    82   92   126  158    0   |
|     MotionNotify  0x3409938    80   92   124  158    0   |
|     MotionNotify  0x3409938    79   92   123  158    0   |
|     MotionNotify  0x3409938    78   92   122  158    0   |
|     MotionNotify  0x3409938    78   92   122  158    0   |
|         KeyPress  0x3409938     0    0     0    0  100   |
|       KeyRelease  0x3409938     0    0     0    0  100   |
|         KeyPress  0x3409938     0    0     0    0  115   |
|       KeyRelease  0x3409938     0    0     0    0  115   |
|         KeyPress  0x3409938     0    0     0    0  100   |
|       KeyRelease  0x3409938     0    0     0    0  100   |

Cheers, Bertrand.

[dudouet]

Perfect, it works now ! Thank you