This section lists the extended styles supported by toolbar controls.

Constants

TBSTYLE_EX_DRAWDDARROWS 

Version 4.71. This style allows buttons to have a separate dropdown arrow. Buttons that have the BTNS_DROPDOWN style will be drawn with a drop-down arrow in a separate section, to the right of the button. If the arrow is clicked, only the arrow portion of the button will depress, and the toolbar control will send a TBN_DROPDOWN notification to prompt the application to display the dropdown menu. If the main part of the button is clicked, the toolbar control sends a WM_COMMAND message with the button's ID. The application normally responds by launching the first command on the menu.

There are many situations where you may want to have only some of the dropdown buttons on a toolbar with separated arrows. To do so, set the TBSTYLE_EX_DRAWDDARROWS extended style. Give those buttons that will not have separated arrows the BTNS_WHOLEDROPDOWN style. Buttons with this style will have an arrow displayed next to the image. However, the arrow will not be separate and when any part of the button is clicked, the toolbar control will send a TBN_DROPDOWN notification. To prevent repainting problems, this style should be set before the toolbar control becomes visible.

TBSTYLE_EX_HIDECLIPPEDBUTTONS 

Version 5.81. This style hides partially clipped buttons. The most common use of this style is for toolbars that are part of a rebar control. If an adjacent band covers part of a button, the button will not be displayed. However, if the rebar band has the RBBS_USECHEVRON style, the button will be displayed on the chevron's dropdown menu.

TBSTYLE_EX_DOUBLEBUFFER 

Version 6. This style requires the toolbar to be double buffered. Double buffering is a mechanism that detects when the toolbar has changed.

Note  Comctl32.dll version 6 is not redistributable but it is included in Microsoft Windows XP or later. To use Comctl32.dll version 6, specify it in a manifest. For more information on manifests, see Enabling Visual Styles.

TBSTYLE_EX_MIXEDBUTTONS 

Version 5.81. This style allows you to set text for all buttons, but only display it for those buttons with the BTNS_SHOWTEXT button style. The TBSTYLE_LIST style must also be set. Normally, when a button does not display text, your application must handle TBN_GETINFOTIP or TTN_GETDISPINFO to display a ToolTip. With the TBSTYLE_EX_MIXEDBUTTONS extended style, text that is set but not displayed on a button will automatically be used as the button's ToolTip text. Your application only needs to handle TBN_GETINFOTIP or or TTN_GETDISPINFO if it needs more flexibility in specifying the ToolTip text.

Remarks

To set an extended style, send the toolbar control a TB_SETEXTENDEDSTYLE message. To determine what extended styles are currently set, send a TB_GETEXTENDEDSTYLE message.