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SetWinMetaFileBits info  Overview  Group

The SetWinMetaFileBits function converts a metafile from the older Windows format to the new enhanced format and stores the new metafile in memory.


    UINT cbBuffer,

// size of buffer

    CONST BYTE *lpbBuffer,

// address of buffered metafile data

    HDC hdcRef,

// handle of reference device context


// suggested size of metafile picture



Specifies the size, in bytes, of the buffer that contains the Windows-format metafile.
Points to a buffer that contains the Windows-format metafile data. (It is assumed that the data was obtained by using the GetMetaFileBitsEx or GetWinMetaFileBits function.)
Identifies a reference device context.
Points to a METAFILEPICT structure that contains the suggested size of the metafile picture and the mapping mode that was used when the picture was created.

Return Values

If the function succeeds, the return value is a handle of a memory-based enhanced metafile.

If the function fails, the return value is NULL. To get extended error information, call GetLastError.


Windows uses the reference device contextís resolution data and the data in the METAFILEPICT structure to scale a picture. If the hdcRef parameter is NULL, Windows uses resolution data for the current output device. If the lpmfp parameter is NULL, Windows uses the MM_ANISOTROPIC mapping mode to scale the picture so that it fits the entire device surface. The hMF field in the METAFILEPICT structure is not used.

When the application no longer needs the enhanced metafile handle, it should delete it by calling the DeleteEnhMetaFile function.

The handle returned by this function can be used with other enhanced-metafile functions.

If the reference device context is not identical to the device in which the metafile was originally created, some GDI functions that use device units may not draw the picture correctly.

See Also

DeleteEnhMetaFile, GetWinMetaFileBits, GetMetaFileBitsEx, METAFILEPICT, PlayEnhMetaFile 

See also:

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