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EM_SCROLL (Compact 2013)

  • Article

3/28/2014

This message scrolls the text vertically in a multiline edit control. This message is equivalent to sending a WM_VSCROLL message to the edit control.

Syntax

EM_SCROLL 
    wParam = (WPARAM)(INT) nScroll; 
    lParam = 0;

Parameters

  • nScroll
    Specifies the action the scroll bar is to take. The following table shows the possible values.

    Value

    Description

    SB_LINEDOWN

    Scrolls down one line.

    SB_LINEUP

    Scrolls up one line.

    SB_PAGEDOWN

    Scrolls down one page.

    SB_PAGEUP

    Scrolls up one page.
  • lParam
    Not used; set to 0.

Return Value

If the message is successful, the high-order word of the return value is TRUE, and the low-order word is the number of lines that the command scrolls. The number returned may not be the same as the actual number of lines scrolled if the scrolling moves to the beginning or the end of the text. If the nScroll parameter specifies an invalid value, the return value is FALSE.

Remarks

An application should use the EM_LINESCROLL message to scroll to a specific line or character position.

An application should use the EM_SCROLLCARET message to scroll the caret into view.

Requirements

Header

windows.h

See Also

Reference

Edit Box Messages
EM_LINESCROLL
EM_SCROLLCARET
WM_VSCROLL