A tab item is placed in a tab bar or tab book. When selected, the tab item
sends a message to its parent, and causes itself to become the active tab,
and raised slightly above the other tabs. In the tab book, activating a tab
item also causes the corresponding panel to be raised to the top.
Tab item orientations (which affect border)
| TAB_TOP: | Top side tabs
|
| TAB_LEFT: | Left side tabs
|
| TAB_RIGHT: | Right side tabs
|
| TAB_BOTTOM: | Bottom side tabs
|
| TAB_TOP_NORMAL: | same as
JUSTIFY_NORMAL|ICON_BEFORE_TEXT|TAB_TOP|FRAME_RAISED|FRAME_THICK
|
| TAB_BOTTOM_NORMAL: | same as
JUSTIFY_NORMAL|ICON_BEFORE_TEXT|TAB_BOTTOM|FRAME_RAISED|FRAME_THICK
|
| TAB_LEFT_NORMAL: | same as
JUSTIFY_LEFT|JUSTIFY_CENTER_Y|ICON_BEFORE_TEXT|TAB_LEFT|FRAME_RAISED|FRAME_THICK
|
| TAB_RIGHT_NORMAL: | same as
JUSTIFY_LEFT|JUSTIFY_CENTER_Y|ICON_BEFORE_TEXT|TAB_RIGHT|FRAME_RAISED|FRAME_THICK
|