Microsoft Foundation Classes (mfc.hlp) (
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GetFontData
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──Microsoft Foundation Classes──────────────────────────────────────────────
Windows 3.1 only
DWORD GetFontData( DWORD dwTable, DWORD dwOffset, LPVOID lpData,
DWORD cbData ) const;
Parameter Description
<dwTable> Specifies the name of the metric table to be returned. This
parameter can be one of the metric tables documented in the
TrueType Font Files specification, published by Microsoft
Corporation. If this parameter is 0, the information is
retrieved starting at the beginning of the font file.
<dwOffset> Specifies the offset from the beginning of the table at
which to begin retrieving information. If this parameter is
0, the information is retrieved starting at the beginning of
the table specified by the <dwTable> parameter. If this
value is greater than or equal to the size of the table,
GetFontData returns 0.
<lpData> Points to a buffer that will receive the font information.
If this value is NULL, the function returns the size of the
buffer required for the font data specified in the <dwTable>
parameter.
<cbData> Specifies the length, in bytes, of the information to be
retrieved. If this parameter is 0, GetFontData returns the
size of the data specified in the <dwTable> parameter.
Remarks
Retrieves font-metric information from a scalable font file. The
information to retrieve is identified by specifying an offset into the
font file and the length of the information to return.
An application can sometimes use the GetFontData member function to save
a TrueType font with a document. To do this, the application determines
whether the font can be embedded and then retrieves the entire font
file, specifying 0 for the <dwTable>, <dwOffset>, and <cbData>
parameters.
Applications can determine whether a font can be embedded by checking
the otmfsType member of the ◄OUTLINETEXTMETRIC► structure. If bit 1 of
otmfsType is set, embedding is not permitted for the font. If bit 1 is
clear, the font can be embedded. If bit 2 is set, the embedding is
read-only.
If an application attempts to use this function to retrieve information
for a non-TrueType font,the GetFontData member function returns -1.
Return Value
Specifies the number of bytes returned in the buffer pointed to by
<lpData> if the function is successful; otherwise, -1.
See Also
◄CDC::GetOutlineTextMetrics►, ◄::GetFontData►
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