EM_SETCHARFORMAT message

Sets character formatting in a rich edit control.

wParam

Character formatting that applies to the control. If this parameter is zero, the default character format is set. Otherwise, it can be one of the following values.

Expand table

Value	Meaning
SCF_ALL	Applies the formatting to all text in the control. Not valid with SCF_SELECTION or SCF_WORD.
SCF_ASSOCIATEFONT	RichEdit 4.1: Associates a font to a given script, thus changing the default font for that script. To specify the font, use the following members of CHARFORMAT2: yHeight, bCharSet, bPitchAndFamily, szFaceName, and lcid.
SCF_ASSOCIATEFONT2	RichEdit 4.1: Associates a surrogate (plane-2) font to a given script, thus changing the default font for that script. To specify the font, use the following members of CHARFORMAT2: yHeight, bCharSet, bPitchAndFamily, szFaceName, and lcid.
SCF_CHARREPFROMLCID	Gets the character repertoire from the LCID.
SCF_DEFAULT	RichEdit 4.1: Sets the default font for the control.
SPF_DONTSETDEFAULT	Prevents setting the default paragraph format when the rich edit control is empty.
SCF_NOKBUPDATE	RichEdit 4.1: Prevents keyboard switching to match the font. For example, if an Arabic font is set, normally the automatic keyboard feature for Bidi languages changes the keyboard to an Arabic keyboard.
SCF_SELECTION	Applies the formatting to the current selection. If the selection is empty, the character formatting is applied to the insertion point, and the new character format is in effect only until the insertion point changes.
SPF_SETDEFAULT	Sets the default paragraph formatting attributes.
SCF_SMARTFONT	Apply the font only if it can handle script.
SCF_USEUIRULES	RichEdit 4.1: Used with SCF_SELECTION. Indicates that format came from a toolbar or other UI tool, so UI formatting rules should be used instead of literal formatting.
SCF_WORD	Applies the formatting to the selected word or words. If the selection is empty but the insertion point is inside a word, the formatting is applied to the word. The SCF_WORD value must be used in conjunction with the SCF_SELECTION value.

lParam

Pointer to a CHARFORMAT structure specifying the character formatting to use. Only the formatting attributes specified by the dwMask member are changed.

Microsoft Rich Edit 2.0 and later: This parameter can be a pointer to a CHARFORMAT2 structure, which is an extension of the CHARFORMAT structure. Before sending the EM_SETCHARFORMAT message, set the structure's cbSize member to sizeof(CHARFORMAT) or sizeof(CHARFORMAT2) indicate which version of the structure is being used.

The szFaceName and bCharSet members may be overruled when invalid for characters, for example: Arial on kanji characters.

If the operation succeeds, the return value is a nonzero value.

If the operation fails, the return value is zero.

If this message is sent more than once with the same parameters, the effect on the text is toggled. That is, sending the message once produces the effect, sending the message twice cancels the effect, and so forth.

Reference

CHARFORMAT

CHARFORMAT2