Overview
Group
Quick Info

Windows NT
Yes
Win95
Yes
Win32s
Yes
Import Library
-
Header File
commctrl.h
Unicode
No
Platform Notes
None

TB_BUTTONSTRUCTSIZE

The TB_BUTTONSTRUCTSIZE message specifies the size of the TBBUTTON structure.

wParam = (WPARAM) cb;

lParam = 0;

Parameters

cb

Size, in bytes, of the TBBUTTON structure.

The system uses the size to determine which version of the common control dynamic-link library (DLL) is being used.

If an application uses the CreateWindowEx function to create the toolbar, the application must send this message to the toolbar before sending the TB_ADDBITMAP or TB_ADDBUTTONS message. The CreateToolBarEx function automatically sends TB_BUTTONSTRUCTSIZE, and the size of the TBBUTTON structure is a parameter of the function.

Return Values

No return value.

See Also

CreateWindowEx
, TB_ADDBITMAP, TB_ADDBUTTONS, TBBUTTON

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