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Canvas event handling: Difference between revisions
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For each placement of a Canvas handling events can be enabled or disabled. A Canvas placed in a PUI (old GUI) widget or as standalone GUI window receives events by default, whereas Canvases placed onto the aircraft model or in the scenery do not receive any events by default. | For each placement of a Canvas handling events can be enabled or disabled. A Canvas placed in a PUI (old GUI) widget or as standalone GUI window receives events by default, whereas Canvases placed onto the aircraft model or in the scenery do not receive any events by default. | ||
{{Note|When using the old [[Howto:Adding_a_canvas_to_a_GUI_dialog|PUI/XML GUI]] with a '''<nowiki><canvas></nowiki>'''-widget placement, PUI does not trigger any mouseover/hover (mousemove) events. Mouse clicks/wheel/drag are working as expected. For all other placements like on standalone Canvas windows and [[Howto:Add_a_2D_canvas_instrument_to_your_aircraft|3D models]] there is no such limitation.}} | {{Note|When using the old [[Howto:Adding_a_canvas_to_a_GUI_dialog|PUI/XML GUI]] with a '''<nowiki><canvas></nowiki>'''-widget placement, PUI does not trigger any mouseover/hover (mousemove) events. Mouse clicks/wheel/drag are working as expected. For all other placements like on standalone Canvas windows and [[Howto:Add_a_2D_canvas_instrument_to_your_aircraft|3D models]] there is no such limitation. If you find that your code doesn't work as expected, make sure to verify that your layers (canvas groups) use matching z-index ordering, or overlapping symbols may prevent event handlers from being triggered/called.}} | ||
For standalone GUI windows setting '''capture-events''' to ''0'' or ''1'' enables or disables handling of events respectively. For a Canvas placed onto a 3d model, setting ''capture-events'' inside the placement can be used to activate event handling: | For standalone GUI windows setting '''capture-events''' to ''0'' or ''1'' enables or disables handling of events respectively. For a Canvas placed onto a 3d model, setting ''capture-events'' inside the placement can be used to activate event handling: | ||