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EnumMetaFile info  Overview  Group

The EnumMetaFile function enumerates the records within a Windows-format metafile by retrieving each record and passing it to the specified callback function. The application-supplied callback function processes each record as required. The enumeration continues until the last record is processed or when the callback function returns zero.

This function is provided for compatibility with earlier versions of Microsoft Windows. Win32-based applications should use the EnumEnhMetaFile function.

BOOL EnumMetaFile(

    HDC hdc,

// handle to device context

    HMETAFILE hmf,

// handle to Windows-format metafile

    MFENUMPROC lpMetaFunc,

// pointer to callback function

    LPARAM lParam 

// address of callback function data



Identifies a device context. This handle is passed to the callback function.
Identifies a Windows-format metafile.
Points to an application-supplied callback function. For more information, see the EnumMetaFileProc callback function.
Points to optional callback-function data.

Return Values

If the callback function successfully enumerates all the records in the Windows-format metafile, the return value is nonzero.

If the callback function does not successfully enumerate all the records in the Windows-format metafile, the return value is zero.


A Windows-format metafile does not support the new curve, path, and transformation functions, such as PolyBezier, BeginPath, and SetWorldTransform. Applications that use these new functions and use metafiles to store pictures created by these functions should use the enhanced-format metafile functions.

To convert a Windows-format metafile into an enhanced-format metafile, use the SetWinMetaFileBits function.

You can use the EnumMetaFile function to embed one Windows-format metafile within another.

See Also

BeginPath, EnumEnhMetaFile, EnumMetaFileProc, PlayMetaFile, PlayMetaFileRecord, PolyBezier, SetWinMetaFileBits, SetWorldTransform

See also:

file: /Techref/os/win/api/win32/func/src/f20_14.htm, 4KB, , updated: 2000/4/7 12:19, local time: 2022/5/23 16:25,

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