The SFTPRINTPREVIEWN_PRINTINGPREPARE notification code is sent when printing starts.

Parameters (WM_COMMAND Message)

wParam

The low-order word contains the Print Preview control's control identifier. The high-order word specifies the notification code SFTPRINTPREVIEWN_PRINTINGPREPARE.

lParam

Window handle of the Print Preview control sending the notification.

Comments

The SFTPRINTPREVIEWN_PRINTINGPREPARE notification code is sent when printing starts.

Printing is started to display a preview or to print on a physical printer.  The SFTPRINTPREVIEWN_PRINTINGDONE notification is sent when printing ends.  Printing starts/ends every time the control contents need to be redrawn.

The parent window of the Print Preview control receives the SFTPRINTPREVIEWN_PRINTINGPREPARE notification code through the WM_COMMAND message.

See Also  C/C++ API  |  C++ Classes  |  Notifications