Documentation

GestureDrag.connectDragBegin

gtk gesture_drag GestureDrag

Connect to DragBegin signal.

Emitted whenever dragging starts.

class GestureDrag
ulong
connectDragBegin
(
T
)
(
T callback
,
Flag!"After" after = No.After
)
if (
isCallable!T &&
is(ReturnType!T == void)
&&
(
Parameters!T.length < 1 ||
(
ParameterStorageClassTuple!T[0] == ParameterStorageClass.none &&
is(Parameters!T[0] == double)
)
)
&&
(
Parameters!T.length < 2 ||
(
ParameterStorageClassTuple!T[1] == ParameterStorageClass.none &&
is(Parameters!T[1] == double)
)
)
&&
(
Parameters!T.length < 3 ||
(
ParameterStorageClassTuple!T[2] == ParameterStorageClass.none &&
is(Parameters!T[2] : gtk.gesture_drag.GestureDrag)
)
)
&&
Parameters!T.length < 4
)

Parameters

callback T

signal callback delegate or function to connect

void callback(double startX, double startY, gtk.gesture_drag.GestureDrag gestureDrag)

startX X coordinate, relative to the widget allocation (optional)

startY Y coordinate, relative to the widget allocation (optional)

gestureDrag the instance the signal is connected to (optional)

after Flag!"After"

Yes.After to execute callback after default handler, No.After to execute before (default)

Return Value

Type: ulong

Signal ID

gtk gesture_drag GestureDrag constructorsfunctions
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