Tab control items now support an item state to support the TCM_DESELECTALL message. Additionally, the TCITEM structure supports item state values.
Constant
Description
TCIS_BUTTONPRESSED
Version 4.70. The tab control item is selected. This state is only meaningful if the TCS_BUTTONS style flag has been set.
TCIS_HIGHLIGHTED
Version 4.71. The tab control item is highlighted, and the tab and text are drawn using the current highlight color. When using high-color, this will be a true interpolation, not a dithered color.