Wrong clientdata pointer in callback function

Forum|Forum|10 years ago
April 29, 2016
5 replies
2147 views

Hello,

I am trying to pass a data object to a callback function when a document loads.

This is my code:

AVAppRegisterNotification(AVDocDidOpenNSEL, gExtensionID, ASCallbackCreateNotification(AVDocDidOpen, (void*)myNotificationCallback), (void*)&aClientData);

The callback function is as follows:

ACCB1 void ACCB2 myNotificationCallback(void *clientData)

{

....

}

However my clientData pointer address in the callback function is not the same as the address when I put it in the AVAppRegisterNotification function.

How is this possible ?

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Correct answer Test Screen Name

Consider, for example: the callback will need to know which AVDoc is just opened, which is not possible if the only parameter is clientData.

T

Test Screen NameCorrect answer

Legend

Consider, for example: the callback will need to know which AVDoc is just opened, which is not possible if the only parameter is clientData.

arge1234Author

Known Participant

Thank you, it must be these 3 ones:

AVDoc myDoc, ASInt32 error, void *clientData

T

Test Screen Name

Legend

Please refer to the documentation or header files for the correct 3 parameters for an AVDocDidOpen callback.

T

Test Screen Name

Legend

I think we have the explanation. You have the wrong number of parameters. Each callback has different parameters and you must be correct.

arge1234Author

Known Participant

Could you please tell me where I miss some parameters ?

T

Test Screen Name

Legend

I understand your reasoning; it is probably correct. So, please post the function declaration for myNotificationCallback (the actual contents are not important, just the declaration).