RdiaTranslateMsg Function

Microchip Graphics Library

previous page next page

Microchip Graphics Library

WORD RdiaTranslateMsg(
    void * pObj, 
    GOL_MSG * pMsg
);

Overview

This function evaluates the message from a user if the message will affect the object or not. The table below enumerates the translated messages for each event of the touch screen inputs.

Translated Message	Input Source	Events	Description
RD_MSG_CLOCKWISE	Touch Screen	EVENT_MOVE	If events occurs and the x,y position falls in the face of the Dial and moving in the clockwise rotation.
RD_MSG_CTR_CLOCKWISE	Touch Screen	EVENT_MOVE	If events occurs and the x,y position falls in the face of the Dial and moving in the counter clockwise rotation.
OBJ_MSG_INVALID	Any	Any	If the message did not affect the object.

Input Parameters

Input Parameters	Description
GOL_MSG * pMsg	Pointer to the message struct containing the message from the user interface.
pDia	The pointer to the object where the message will be evaluated to check if the message will affect the object.

Returns

Returns the translated message depending on the received GOL message:

RD_MSG_CLOCKWISE – Dial is moved in a clockwise direction.
RD_MSG_CTR_CLOCKWISE – Dial is moved in a counter clockwise direction.
OBJ_MSG_INVALID – Dial is not affected

Preconditions

none

Side Effects

none

Example

Copy Code

void MyGOLMsg(GOL_MSG *pMsg){

    OBJ_HEADER *pCurrentObj;
    WORD objMsg;
        
    if(pMsg->event == EVENT_INVALID)
        return;
    pCurrentObj = GOLGetList();
    
    while(pCurrentObj != NULL){
        // Process only ROUNDDIAL
        if(!IsObjUpdated(pCurrentObj)){
            switch(pCurrentObj->type){
                case OBJ_ROUNDIAL:
                    objMsg = RdiaTranslateMsg((ROUNDDIAL*)pCurrentObj, pMsg);
                    if(objMsg == OBJ_MSG_INVALID)
                        break;
                    if(GOLMsgCallback(objMsg,pCurrentObj,pMsg))
                        RdiaMsgDefault(objMsg,(ROUNDDIAL*)pCurrentObj);
                    break;
                default: break; 
            }
        }
    }
    pCurrentObj = pCurrentObj->pNxtObj;
}

Library API > Graphics Object Layer API > GOL Objects > Round Dial > RdiaTranslateMsg Function

Contents | Index | Home

previous page start next page