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Thread: Qt embedded Keyboard Plugin problem

  1. #1
    Join Date
    Jan 2010
    Posts
    2
    Qt products
    Qt4 Qt/Embedded
    Platforms
    Unix/X11 Windows

    Question Qt embedded Keyboard Plugin problem

    Hi,

    I have written a custom keypad plugin usine qt embedded. I print the keycodes in the plugin with the use of printf statements.
    I wrote a test application to test the plugin.
    After the application starts, the keycodes are printed randomly even without me pressing any buttons and after some time i get this message
    QMutex: Deadlock detected in thread

    Any help on the above please?

    Thanks.

  2. #2
    Join Date
    Jan 2010
    Posts
    2
    Qt products
    Qt4 Qt/Embedded
    Platforms
    Unix/X11 Windows

    Default Re: Qt embedded Keyboard Plugin problem

    Hi All,

    I am using Qt embedded 4.5.2 and I have written a custom Keypad plugin for my device as given in the tutorial.

    I am facing a few problems when I load the Plugin. Once I have loaded the plugin,

    1. Randomly some key press events are generated and get printed on the console ( this is because i have added printf statements for each switch case for debuggin purpose)

    2. When I press a key on the keypad, there is no character shown on the display, rather when I close the application, I could see the keys pressed displayed on the background LCD screen.

    3. After a minute or so after the plugin is loaded, I get this error on the console

    QMutex : Deadlock detected on thread.

    I have written the plguin as per the tutorial and used the existing keypad plugins as reference.

    Am I missing something, please help...

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