MM_WIM_OPEN  WCTDJ 

The MM_WIM_OPEN message is sent to a window when a waveform-audio input device is opened.

MM_WIM_OPEN

wParam = (WPARAM) hInputDev

lParam = reserved

Parameters

hInputDev

Handle of the device that was opened.

lParam

Reserved; must be zero.

Return Values

This message does not return a value.