/// <summary>
/// Event raised when the user releases the left mouse-button.
/// </summary>
private void Control_MouseUp(object sender, MouseButtonEventArgs e)
{
if (e.ChangedButton == MouseButton.Left)
{
bool wasDragSelectionApplied = false;
if (isDraggingSelectionRect)
{
//
// Drag selection has ended, apply the 'selection rectangle'.
//
isDraggingSelectionRect = false;
ApplyDragSelectionRect();
e.Handled = true;
wasDragSelectionApplied = true;
}
if (isLeftMouseButtonDownOnCanvas)
{
isLeftMouseButtonDownOnCanvas = false;
GridContainer.ReleaseMouseCapture();
e.Handled = true;
}
if (!wasDragSelectionApplied)
{
//
// A click and release in empty space clears the selection.
//
listBox.SelectedItems.Clear();
}
}
currentMouseOperation = MouseOperation.None;
}