Check if there is message handler

[Althor]

Hi,

I want to install my own message handler to redirect stderr output to stdout but before install my message handler I would like to check if a message handler has been installed already.

is there any function to check it I could use?

Basically I want to do this:

if (there is not a message handler installed)
qInstallMsgHandler(myMessageOutput);

thanks in advance
regards.

[tbscope]

qInstallMsgHandler returns the previous installed one. You can check if that one exists and then reset.

[Althor]

I know, but I don´t want to call qinstallmsghandler if there is a message handler already. I don´t want to override the message handler installed

[wysota]

QtMsgHandler handler = qInstallMsgHandler(myHandler);
if(handler)
  qInstallMsgHandler(handler);

QtMsgHandler handler = qInstallMsgHandler(myHandler);
if(handler)
  qInstallMsgHandler(handler);

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