Wt

There is some essential setup that occurs in the WComboBox constructor that does not occur when the constructor for the WSelectionBox is called. Specifically a model is not created, leaving the model pointer in a nullptr state. There are no checks for nullptr in functions like clear().

WSelectionBox::WSelectionBox()

: verticalSize_(5),

selectionMode_(SelectionMode::Single),

configChanged_(false)

{

noSelectionEnabled_ = true;

}