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This structure contains data that describes a physical font.
typedef
struct
tagNEWTEXTMETRIC
{
LONG
tmHeight
;
LONG
tmAscent
;
LONG
tmDescent
;
LONG
tmInternalLeading
;
LONG
tmExternalLeading
;
LONG
tmAveCharWidth
;
LONG
tmMaxCharWidth
;
LONG
tmWeight
;
LONG
tmOverhang
;
LONG
tmDigitizedAspectX
;
LONG
tmDigitizedAspectY
;
BCHAR
tmFirstChar
;
BCHAR
tmLastChar
;
BCHAR
tmDefaultChar
;
BCHAR
tmBreakChar
;
BYTE
tmItalic
;
BYTE
tmUnderlined
;
BYTE
tmStruckOut
;
BYTE
tmPitchAndFamily
;
BYTE
tmCharSet
; DWORD
ntmFlags
;
UINT
ntmSizeEM
;
UINT
ntmCellHeight
;
UINT
ntmAvgWidth
;
}
NEWTEXTMETRIC;
Members
- tmHeight
- Specifies the height (ascent descent) of characters.
- tmAscent
- Specifies the ascent (units above the base line) of characters.
- tmDescent
- Specifies the descent (units below the base line) of characters.
- tmInternalLeading
- Specifies the amount of leading (space) inside the bounds set by the tmHeightmember. Accent marks and other diacritical characters may occur in this area. The designer may set this member to zero.
- tmExternalLeading
- Specifies the amount of extra leading (space) that the application adds between rows. Because this area is outside the font, it contains no marks and is not altered by text output calls in either OPAQUE or TRANSPARENT mode. The designer may set this member to zero.
- tmAveCharWidth
- Specifies the average width of characters in the font (generally defined as the width of the letter x). This value does not include overhang required for bold or italic characters.
- tmMaxCharWidth
- Specifies the width of the widest character in the font.
- tmWeight
- Specifies the weight of the font.
- tmOverhang
- Specifies the extra width per string that may be added to some
synthesized fonts. When synthesizing some attributes, such as bold
or italic, graphics device interface (GDI) or a device may have to
add width to a string on both a per-character and per-string basis.
For example, GDI makes a string bold by expanding the spacing of
each character and overstriking by an offset value; it italicizes a
font by shearing the string. In either case, there is an overhang
past the basic string. For bold strings, the overhang is the
distance by which the overstrike is offset. For italic strings, the
overhang is the amount the top of the font is sheared past the
bottom of the font.
The tmOverhangmember enables the application to determine how much of the character width returned by a GetTextExtentPoint32function call on a single character is the actual character width and how much is the per-string extra width. The actual width is the extent minus the overhang.
- tmDigitizedAspectX
- Specifies the horizontal aspect of the device for which the font was designed.
- tmDigitizedAspectY
- Specifies the vertical aspect of the device for which the font was designed. The ratio of the tmDigitizedAspectXand tmDigitizedAspectYmembers is the aspect ratio of the device for which the font was designed.
- tmFirstChar
- Specifies the value of the first character defined in the font.
- tmLastChar
- Specifies the value of the last character defined in the font.
- tmDefaultChar
- Specifies the value of the character to be substituted for characters that are not in the font.
- tmBreakChar
- Specifies the value of the character to be used to define word breaks for text justification.
- tmItalic
- Specifies an italic font if it is nonzero.
- tmUnderlined
- Specifies an underlined font if it is nonzero.
- tmStruckOut
- Specifies a strikeout font if it is nonzero.
- tmPitchAndFamily
- Specifies the pitch and family of the selected font. The
low-order bit (bit 0) specifies the pitch of the font. If it is 1,
the font is variable pitch (or proportional). If it is 0, the font
is fixed pitch (or monospace). Bits 1 and 2 specify the font type.
If both bits are 0, the font is a raster font; if bit 1 is 1 and
bit 2 is 0, the font is a vector font; if bit 1 is 0 and bit 2 is
set, or if both bits are 1, the font is some other type. Bit 3 is 1
if the font is a device font; otherwise, it is 0.
The four high-order bits designate the font family. The tmPitchAndFamilymember can be combined with the hexadecimal value 0xF0 by using the bitwise AND operator and can then be compared with the font family names for an identical match. For more information about the font families, see LOGFONT.
- tmCharSet
- Specifies the character set of the font.
- ntmFlags
- Specifies whether the font is italic, underscored, outlined,
bold, and so forth. The following list shows the bits corresponding
to each font type.
Bit Font 0 Italic 1 Underscore 2 Negative 3 Outline 4 Strikeout 5 Bold - ntmSizeEM
- Specifies the size of the em square for the font. This value is in "notional units" (that is, the units for which the font was designed).
- ntmCellHeight
- Specifies the height, in notional units, of the font. This value should be compared with the value of the ntmSizeEMmember.
- ntmAvgWidth
- Specifies the average width of characters in the font, in
notional units. This value should be compared with the value of the
ntmSizeEMmember.
Remarks
The last four members of the NEWTEXTMETRICstructure are not included in the TEXTMETRICstructure; in all other respects, the structures are identical.
The sizes in the NEWTEXTMETRICstructure are typically given in logical units; that is, they depend on the current mapping mode of the display context.
Requirements
Runs on Versions Defined in Include Link to Windows CE OS 1.0 and later Wingdi.h Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.
See Also
EnumFontFamilies, GetTextExtentPoint32, GetTextMetrics, LOGFONT, TEXTMETRIC