1.27.2 Send methods

click_gesture ->cancel: event

Forward click_gesture<-cancel_message (if any) and cancel the gesture using gesture->cancel. Called from click_gesture->drag if the user dragged too far.

click_gesture ->drag: event

If click_gesture<-max_drag_distance is not @nil, determine the distance between the original down event and the current event and click_gesture->cancel if this distance exceeds click_gesture<-max_drag_distance pixels.

click_gesture ->initialise: button=[button_name], modifier=[modifier], multiple=[{single,double,triple}], message=[code]*, preview=[code]*, cancel=[code]*

Initialises a click_gesture from the following arguments:

button	Mouse-button: {left,middle,right}
modifier	Modifier status
multiclick	Multiclick status: {single,double,triple}
execute_message	Ran when click is finished (up)
preview_message	Ran when click is started (down)
cancel_message	Ran on up outside area

Defaults: button Resource defined (left) modifier Resource defined (none) multiclick Resource defined (single) execute_message @nil preview_message @nil cancel_message @nil

click_gesture ->initiate: event

When click_gesture<-preview_message is not @nil, forward this message.

click_gesture ->terminate: event

Executes click_gesture<-execute_message iff the pointer is not moved outside the area of the graphical for which this gesture was started or the pointer has been moved less than 5 pixels.

Otherwise the click_gesture<-cancel_message is executed when it is not @nil