add: WMUnmapWidget(strdata->widget);
context: static void endSECellEdit(WMTableColumnDelegate *self,			WMTableColumn *column, int row){    StringEditorData *strdata = (StringEditorData*)self->data;        WMRect rect = WMTableViewRectForCell(strdata->table, column, row);    char *text;        text = WMGetTextFieldText(strdata->widget);    WMSetTableViewDataForCell(strdata->table, column, row, (void*)text);}