Toolbar Buttons - Win32 Programmer's Reference

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Toolbar Buttons

You add buttons to a toolbar by filling an array of TBBUTTON structures and specifying the address of the array either in the TB_ADDBUTTONS message or in a call to the CreateToolbarEx function. You can also use the TB_INSERTBUTTON message, which passes the address of a TBBUTTON structure to the toolbar. Each TBBUTTON structure defines the attributes of a button, including the indexes of its string and bitmap as well as its style, state, command identifier, and application-defined 32-bit value.

If you use the CreateWindowEx function to create a toolbar, you must send the TB_BUTTONSTRUCTSIZE message before adding any buttons. The message passes the size of the TBBUTTON structure to the toolbar.

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