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Post subject: how to access the gui by thread function?
 Posted: May 11, 2007 - 02:30 PM
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Active Member
Joined: Aug 01, 2002
Posts: 15
Location: Germany
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Hola,
In a photon application i got a thread which is controling a network connection. I want to write out this connection state into a widget at a dialog. If the thread calls PtSetResource() the the application crashes. I think it is because of missing thread safenes.
How could i write out the state instead?
Here is the actual method which failed:
-->THREAD1:
PtMainLoop( );
// on press connect button, i start the connection thread
pthread_create(THREAD2);
-->THREAD2:
if( connection_state == changed)
PtSetResource(ABW_output_widget); // crashes the application |
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Post subject: RE: how to access the gui by thread function?
Posted: May 11, 2007 - 02:48 PM
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QNX Master
Joined: Sep 01, 2002
Posts: 2831
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| Look at PtEnter and PtLeave, or have the second thread signal the first thread that some stuff needs to be refreshed. |
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Post subject: RE: how to access the gui by thread function?
Posted: May 14, 2007 - 06:25 AM
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Active Member
Joined: Aug 01, 2002
Posts: 15
Location: Germany
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| Thanks, i found the tutorial "Parallel Operations" right now. |
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