An application sends the EM_SETMARGINS message to set the widths of the left and right margins for an edit control. The message redraws the control to reflect the new margins.
EM_SETMARGINS
wParam = (WPARAM) fwMargin; // left and/or right margins
lParam = (LPARAM) MAKELONG(wLeft, wRight); // width of left or right margins, in pixels
Value | Meaning |
---|---|
EC_LEFTMARGIN | Sets the left margin. |
EC_RIGHTMARGIN | Sets the right margin. |
EC_USEFONTINFO | Uses information about the current font of the edit control to set the margins. For a single-line edit control, margins are set to the average width of characters in the font. For a multiline edit control, the right margin is set to the "A" width of the font (the distance added to the current position before drawing a character), and the left margin is set to the "C" width (the distance added to the current position to provide white space to the right of a character). |
If EC_USEFONTINFO is specified, the lParam parameter is ignored.
This message does not return a value.
Windows NT: Requires version 4.0 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
Edit Controls Overview, Edit Control Messages, EM_GETMARGINS