The mmioSendMessage function sends a message to the I/O procedure associated with the specified file.

More info on mmioSendMessage in Windows Dev Center

Exported by

sizefilenameversion
126056winmm.dll6.3.9600.17415 (winblue_r4.141028-1500)
104960winmm.dll1.0.0.0
88576winmm.dll1.0.0.0

Imported by

sizefilename
126056winmm.dll
273587write.exe