EN_HSCROLL

The EN_HSCROLL notification message is sent when the user clicks an edit control's horizontal scroll bar. The parent window of the edit control receives this notification message through the WM_COMMAND message. The parent window is notified before the screen is updated.

EN_HSCROLL 
idEditCtrl = (int) LOWORD(wParam); // identifier of edit control 
hwndEditCtrl = (HWND) lParam;      // handle of edit control 
 

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.

See Also

Edit Controls Overview, Edit Control Messages, EN_VSCROLL, WM_COMMAND