QPointingDeviceUniqueId¶

QPointingDeviceUniqueId identifies a unique object, such as a tagged token or stylus, which is used with a pointing device. More…

Synopsis¶

Functions¶

def __eq__ (, rhs)
def __ne__ (, rhs)
def isValid ()
def numericId ()

Static functions¶

def fromNumericId (id)

Detailed Description¶

QPointingDeviceUniqueIds can be compared for equality, and can be used as keys in a QHash . You get access to the numerical ID via numericId() , if the device supports such IDs. For future extensions, though, you should not use that function, but compare objects of this type using the equality operator.

This class is a thin wrapper around an integer ID. You pass it into and out of functions by value.

This type actively prevents you from holding it in a QList , because doing so would be very inefficient. Use a QVector instead, which has the same API as QList , but more efficient storage.

See also

TouchPoint

class PySide2.QtGui.QPointingDeviceUniqueId¶

PySide2.QtGui.QPointingDeviceUniqueId(QPointingDeviceUniqueId)

param QPointingDeviceUniqueId:

PySide2.QtGui.QPointingDeviceUniqueId

Constructs an invalid unique pointer ID.

static PySide2.QtGui.QPointingDeviceUniqueId.fromNumericId(id)¶

Parameters:: id – int
Return type:: PySide2.QtGui.QPointingDeviceUniqueId

Constructs a unique pointer ID from numeric ID id .

PySide2.QtGui.QPointingDeviceUniqueId.isValid()¶

Return type:: bool

Returns whether this unique pointer ID is valid, that is, it represents an actual pointer.

PySide2.QtGui.QPointingDeviceUniqueId.numericId()¶

Return type:: int

This property holds the numeric unique ID of the token represented by a touchpoint.

If the device provides a numeric ID, isValid() returns true, and this property provides the numeric ID; otherwise it is -1.

You should not use the value of this property in portable code, but instead rely on equality to identify pointers.

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