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Determines the topmost visible line in this CRichEditCtrl object.

int GetFirstVisibleLine( ) const;

Zero-based index of the uppermost visible line in this CRichEditCtrl object.

For more information, see EM_GETFIRSTVISIBLELINE in the Platform SDK.

// The pointer to my rich edit control.
extern CRichEditCtrl* pmyRichEditCtrl;

int nFirstVisible = pmyRichEditCtrl->GetFirstVisibleLine();

// Scroll the rich edit control so that the first visible line
// is the first line of text.
if (nFirstVisible > 0)
   pmyRichEditCtrl->LineScroll(-nFirstVisible, 0);