IMapControlEvents2.OnDoubleClick Event

Fires when the user presses and releases the mouse button twice in quick succession.

[Visual Basic .NET]
Public Event OnDoubleClick As OnDoubleClickEventHandler

[C#]
public event OnDoubleClickEventHandler OnDoubleClick

[C++]
HRESULT OnDoubleClick(
  long button,
  long shift,
  long X,
  long Y,
  double mapX,
  double mapY
);

[C++]

Parameters
button [in]
  button is a parameter of type long
shift [in]
  shift is a parameter of type long
X [in]
  X is a parameter of type long
Y [in]
  Y is a parameter of type long
mapX [in]
  mapX is a parameter of type double
mapY [in]
  mapY is a parameter of type double

Product Availability

Description

button specifies which mouse button was pressed. 1 for the left mouse button, 2 for the right mouse button, and 4 for the middle mouse button.

shift specifies an integer corresponding to the state of the SHIFT (bit 0), CTRL (bit 1) and ALT (bit 2) keys. When none, some or all of these keys are pressed none, some or all the bits get set. These bits correspond to the values 1, 2, and 4, respectively. For example, if both SHIFT and ALT were pressed, ShiftState would return 5.

x is the X coordinate, in pixels, where the mouse button was pressed referenced against the origin (0, 0) of the MapControl (the top left hand corner).

y is the Y coordinate, in pixels, where the mouse button was pressed referenced against the origin (0, 0) of the MapControl (the top left hand corner).

mapX is the X coordinate, in map units, where the mouse button was pressed referenced against the origin (bottom left hand corner) of the IMapControl2::Map. The values returned are in IMapControl2::MapUnits.

mapY is the Y coordinate, in map units, where the mouse button was pressed referenced against the origin (bottom left hand corner) of the IMapControl2::Map. The values returned are in IMapControl2::Units

Remarks

The OnDoubleClick event is triggered when the user releases and presses a mouse button and then presses and releases it again on the MapControl. If the double click does not occur within the system's double click time limit, the MapControl will recognise another OnMouseDown event. Otherwise the event sequence is as follows:

OnMouseDown
OnMouseUp
OnDoubleClick
OnMouseUp

See Also