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mmioInstallIOProc
The mmioInstallIOProc function installs or removes a custom I/O procedure. This function also
locates an installed I/O procedure, using its corresponding four-character code.
LPMMIOPROC mmioInstallIOProc(
FOURCC fccIOProc,
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| LPMMIOPROC pIOProc,
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| DWORD dwFlags
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| );
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Parameters
fccIOProc
Four-character code identifying the I/O procedure to install, remove, or
locate. All characters in this code should be uppercase.
pIOProc
Address of the I/O procedure to install. To remove or locate an I/O procedure,
set this parameter to NULL. For more information about the I/O procedure, see MMIOProc.
dwFlags
Flag indicating whether the I/O procedure is being installed, removed, or
located. The following values are defined:
MMIO_FINDPROC
Searches for the specified I/O procedure.
MMIO_GLOBALPROC
This flag is a modifier to the MMIO_INSTALLPROC flag and indicates the I/O
procedure should be installed for global use. This flag is ignored if
MMIO_FINDPROC or MMIO_REMOVEPROC is specified.
MMIO_INSTALLPROC
Installs the specified I/O procedure.
MMIO_REMOVEPROC
Removes the specified I/O procedure.
Return Values
Returns the address of the I/O procedure installed, removed, or located.
Returns NULL if there is an error.
See Also
MMIOProc
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