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NMTBSAVE structure (commctrl.h)

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This structure is passed to applications when they receive a TBN_SAVE notification code. It contains information about the button currently being saved. Applications can modify the values of the members to save additional information.

Syntax

typedef struct tagNMTBSAVE {
  NMHDR    hdr;
  DWORD    *pData;
  DWORD    *pCurrent;
  UINT     cbData;
  int      iItem;
  int      cButtons;
  TBBUTTON tbButton;
} NMTBSAVE, *LPNMTBSAVE;

Members

hdr

Type: NMHDR

An NMHDR structure that contains additional information about the notification.

pData

Type: DWORD*

A pointer to the data stream used to store the save information. When complete, it will contain blocks of Shell-defined information for each button, alternating with blocks defined by the application. Applications may also choose to place a block of global data at the start of pData. The format and length of the application-defined blocks are determined by the application. When the save starts, the Shell will pass the amount of memory it needs in cbData, but no memory will be allocated. You must allocate enough memory for pData to hold your data, plus the Shell's.

pCurrent

Type: DWORD*

A pointer to the start of the unused portion of the data stream. You should load your data here, and then advance pCurrent to the start of the remaining unused portion. The Shell will then load the information for the next button, advance pCurrent, and so on.

cbData

Type: UINT

The size of the data stream. When the save starts, cbData will be set to the amount of data needed by the Shell. You should change it to the total amount allocated.

iItem

Type: int

This parameter is usually the zero-based index of the button currently being saved. It is set to -1 to indicate that a save is starting.

cButtons

Type: int

An estimate of the number of buttons. Because it is based on the size of the data stream, it may be incorrect. The client should update it as appropriate.

tbButton

Type: TBBUTTON

A TBBUTTON structure that contains information about the button currently being saved.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Header commctrl.h