DAC2PROC callback

---

DAC-2 event handling callback function.

void CALLBACK YourHandlerProc(
    DWORD dwAction,
    DWORD dwValue,
    DWORD user
);

Parameters

dwAction

The event that has been sent from the DAC-2.

The value could be equal to any of the following event codes

DAC2_LOAD_DOWN DAC2_LOAD_UP DAC2_CUE_DOWN DAC2_CUE_UP DAC2_PLAY_DOWN DAC2_PLAY_UP DAC2_WAIT_DOWN DAC2_WAIT_UP DAC2_SHIFT_DOWN DAC2_SHIFT_UP DAC2_FX_DOWN DAC2_FX_UP DAC2_CUE_LEFT_DOWN DAC2_CUE_LEFT_UP DAC2_CUE_RIGHT_DOWN DAC2_CUE_RIGHT_UP DAC2_GROUP_DOWN DAC2_GROUP_UP DAC2_LOOP_DOWN DAC2_LOOP_UP DAC2_MATCH_DOWN DAC2_MATCH_UP DAC2_PITCHBEND_PLUS_DOWN DAC2_PITCHBEND_PLUS_UP DAC2_PITCHBEND_MINUS_DOWN DAC2_PITCHBEND_MINUS_UP DAC2_PITCH_SLIDER DAC2_JOG_LEFT DAC2_JOG_RIGHT DAC2_SEEK_START DAC2_SEEK_END DAC2_SEEK_FWD_1_ON DAC2_SEEK_FWD_1_OFF DAC2_SEEK_FWD_2_ON DAC2_SEEK_FWD_2_OFF DAC2_SEEK_FWD_3_ON DAC2_SEEK_FWD_3_OFF DAC2_SEEK_FWD_4_ON DAC2_SEEK_FWD_4_OFF DAC2_SEEK_FWD_5_ON DAC2_SEEK_FWD_5_OFF DAC2_SEEK_FWD_6_ON DAC2_SEEK_FWD_6_OFF DAC2_SEEK_FWD_7_ON DAC2_SEEK_FWD_7_OFF DAC2_SEEK_REV_1_ON DAC2_SEEK_REV_1_OFF DAC2_SEEK_REV_2_ON DAC2_SEEK_REV_2_OFF DAC2_SEEK_REV_3_ON DAC2_SEEK_REV_3_OFF DAC2_SEEK_REV_4_ON DAC2_SEEK_REV_4_OFF DAC2_SEEK_REV_5_ON DAC2_SEEK_REV_5_OFF DAC2_SEEK_REV_6_ON DAC2_SEEK_REV_6_OFF DAC2_SEEK_REV_7_ON DAC2_SEEK_REV_7_OFF DAC2_SEEK_REV_8_ON DAC2_SEEK_REV_8_OFF

Load button is pushed down Load button is released Cue button is pushed down Cue button is released Play button is pushed down Play button is released Wait button is pushed down Wait button is released Shift button is pushed down Shift button is released FX button is pushed down FX button is released Cue Seek Left button is pushed down Cue Seek Left button is released Cue Seek Right button is pushed down Cue Seek Right button is released Group button is pushed down Group button is released Loop button is pushed down Loop button is released Match button is pushed down Match button is released Pitch Bend Plus button is pushed down Pitch Bend Plus button is released Pitch Bend Minus button is pushed down Pitch Bend Minus button is released Pitch slider is being moved (check dwValue for position between –63 and 63) Jog wheel moved left Jog wheel moved right Seeking just started Seeking just ended Seek Forward position 1 has been reached Seek Forward position 1 has been left Seek Forward position 2 has been reached Seek Forward position 2 has been left Seek Forward position 3 has been reached Seek Forward position 3 has been left Seek Forward position 4 has been reached Seek Forward position 4 has been left Seek Forward position 5 has been reached Seek Forward position 5 has been left Seek Forward position 6 has been reached Seek Forward position 6 has been left Seek Forward position 7 has been reached Seek Forward position 7 has been left Seek Reverse position 1 has been reached Seek Reverse position 1 has been left Seek Reverse position 2 has been reached Seek Reverse position 2 has been left Seek Reverse position 3 has been reached Seek Reverse position 3 has been left Seek Reverse position 4 has been reached Seek Reverse position 4 has been left Seek Reverse position 5 has been reached Seek Reverse position 5 has been left Seek Reverse position 6 has been reached Seek Reverse position 6 has been left Seek Reverse position 7 has been reached Seek Reverse position 7 has been left Seek Reverse position 8 has been reached Seek Reverse position 8 has been left

dwValue

The value associated with the event or action if any. Note: Only the DAC2_PITCH_SLIDER event uses this parameter.

user

The user instance data given when DAC2_EventCallbackSet was called.

Remarks
This function will receive all event sent from the DAC-2 controller. If the event is a button you will receive an event for the DOWN and the UP of a button so that way you can determine if a button is being held down or not. If the event is the pitch slider you will receive the position of the slider in the dwValue parameter from –63 to 63.

Example
Two callback functions, one to handle DeckA events and one to handle DeckB events.

if(DAC2_Init("com4"))

{

DAC2_EventCallbackSet((DAC2PROC*)&DAC2DeckAHandler,(DAC2PROC*)&DAC2DeckBHandler, (DWORD)this);

}

void CALLBACK DAC2DeckAHandler(DWORD dwAction, DWORD dwValue, DWORD user)

{

if(dwAction == DAC2_LOAD_DOWN)

{

MessageBox(“Load Button Down”, “Load Button Down”, MB_ICONINFORMATION|MB_OK);

}

else if(dwAction == DAC2_LOAD_UP)

{

MessageBox(“Load Button Up”, “Load Button Up”, MB_ICONINFORMATION|MB_OK);

}

}

void CALLBACK DAC2DeckBHandler(DWORD dwAction, DWORD dwValue, DWORD user)

{

if(dwAction == DAC2_LOAD_DOWN)

{

MessageBox(“Load Button Down”, “Load Button Down”, MB_ICONINFORMATION|MB_OK);

}

else if(dwAction == DAC2_LOAD_UP)

{

MessageBox(“Load Button Up”, “Load Button Up”, MB_ICONINFORMATION|MB_OK);

}

}

See also
DAC2_EventCallbackSet