On 03/22/2016 09:58 PM, Krzysztof wrote:
Hi, I have music player based on Bass library. It can play online radio and signal (metadata) if song in radio has changed. Code is quite old and Bass binary is not changed. Recently I updated SVN source (I need to use it because it has important bug fixes), rebuild Lazarus and receive metadata stopped worked but only in Debug mode, Release is working fine. This is output in debug mode: TApplication.HandleException Unknown Run-Time error : 202 Stack trace: $0000000000437E5F $00007F38A2AF6634 QObject: Cannot create children for a parent that is in a different thread. (Parent is Oxygen::WidgetStateEngine(0x2812a90), parent's thread is QThread(0x272ddb0), current thread is QThread(0x7f3870000d20) QObject: Cannot create children for a parent that is in a different thread. (Parent is Oxygen::WidgetStateEngine(0x28161e0), parent's thread is QThread(0x272ddb0), current thread is QThread(0x7f3870000d20) QObject: Cannot create children for a parent that is in a different thread. (Parent is Oxygen::WidgetStateEngine(0x28161e0), parent's thread is QThread(0x272ddb0), current thread is QThread(0x7f3870000d20) QObject: Cannot create children for a parent that is in a different thread. (Parent is Oxygen::WidgetStateEngine(0x2812a90), parent's thread is QThread(0x272ddb0), current thread is QThread(0x7f3870000d20) QObject: Cannot create children for a parent that is in a different thread. (Parent is Oxygen::WidgetStateEngine(0x28161e0), parent's thread is QThread(0x272ddb0), current thread is QThread(0x7f3870000d20) QObject: Cannot create children for a parent that is in a different thread. (Parent is Oxygen::WidgetStateEngine(0x28161e0), parent's thread is QThread(0x272ddb0), current thread is QThread(0x7f3870000d20) QPixmap: It is not safe to use pixmaps outside the GUI thread QPixmap: It is not safe to use pixmaps outside the GUI thread QPixmap: It is not safe to use pixmaps outside the GUI thread QPixmap: It is not safe to use pixmaps outside the GUI thread QPixmap: It is not safe to use pixmaps outside the GUI thread QPainter::begin: Paint device returned engine == 0, type: 2 QPixmap: It is not safe to use pixmaps outside the GUI thread
1. Try to run your application with another style. eg myapplication -styke plastique and see if you have same problem with children creation.
2.Using QPixmap outside of main thread is a big no-no, for that purpose you must use QImage.
zeljko -- _______________________________________________ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
