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CWnd::SendDlgItemMessage

Sends a message to a control.

LRESULT SendDlgItemMessage( 
   int nID, 
   UINT message, 
   WPARAM wParam = 0, 
   LPARAM lParam = 0  
);
nID

Specifies the identifier of the dialog control that will receive the message.

message

Specifies the message to be sent.

wParam

Specifies additional message-dependent information.

lParam

Specifies additional message-dependent information.

Specifies the value returned by the control's window procedure, or 0 if the control was not found.

The SendDlgItemMessage member function does not return until the message has been processed.

Using SendDlgItemMessage is identical to obtaining a CWnd* to the given control and calling the SendMessage member function.

void CMyDlg::SetSpinRange()
{
   //set the min and max range of the up/down or spin control
   SendDlgItemMessage(IDC_SPIN1, UDM_SETRANGE, 0, (LPARAM) MAKELONG (8, 1));
}

Header: afxwin.h

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