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.
file: /Techref/os/win/api/win32/mess/src/msg06_7.htm, 2KB, , updated: 2000/4/7 12:20, local time: 2024/9/5 05:12,
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